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EP3015222A1 - Grinding wheel - Google Patents

Grinding wheel Download PDF

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Publication number
EP3015222A1
EP3015222A1 EP15176163.2A EP15176163A EP3015222A1 EP 3015222 A1 EP3015222 A1 EP 3015222A1 EP 15176163 A EP15176163 A EP 15176163A EP 3015222 A1 EP3015222 A1 EP 3015222A1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
grinding
abrasive
blanks
carrier plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15176163.2A
Other languages
German (de)
French (fr)
Other versions
EP3015222B1 (en
Inventor
Jan Schuster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lukas-Erzett Vereinigte Schleif- und Fraswerkzeugfabriken & Co KG GmbH
Original Assignee
Lukas-Erzett Vereinigte Schleif- und Fraswerkzeugfabriken & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lukas-Erzett Vereinigte Schleif- und Fraswerkzeugfabriken & Co KG GmbH filed Critical Lukas-Erzett Vereinigte Schleif- und Fraswerkzeugfabriken & Co KG GmbH
Priority to PL15176163T priority Critical patent/PL3015222T3/en
Priority to SI201530140T priority patent/SI3015222T1/en
Priority to EP15176163.2A priority patent/EP3015222B1/en
Priority to ES15176163.2T priority patent/ES2653813T3/en
Publication of EP3015222A1 publication Critical patent/EP3015222A1/en
Priority to CN201680040389.XA priority patent/CN107848095B/en
Priority to MX2018000272A priority patent/MX2018000272A/en
Priority to PCT/EP2016/065107 priority patent/WO2017005569A1/en
Priority to JP2018512250A priority patent/JP6494866B2/en
Priority to CA2992056A priority patent/CA2992056C/en
Priority to US15/742,715 priority patent/US10500698B2/en
Priority to UAA201712795A priority patent/UA121498C2/en
Priority to RU2018104814A priority patent/RU2664842C1/en
Priority to SG11201800067VA priority patent/SG11201800067VA/en
Priority to BR112018000050-7A priority patent/BR112018000050B1/en
Application granted granted Critical
Publication of EP3015222B1 publication Critical patent/EP3015222B1/en
Priority to PH12018500072A priority patent/PH12018500072A1/en
Priority to CL2018000069A priority patent/CL2018000069A1/en
Priority to ZA2018/00503A priority patent/ZA201800503B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • Bโ€”PERFORMING OPERATIONS; TRANSPORTING
    • B24โ€”GRINDING; POLISHING
    • B24Dโ€”TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00โ€”Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02โ€”Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/06โ€”Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery the flaps or strips being individually attached
    • Bโ€”PERFORMING OPERATIONS; TRANSPORTING
    • B24โ€”GRINDING; POLISHING
    • B24Dโ€”TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00โ€”Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02โ€”Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/08โ€”Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising annular or circular sheets packed side by side
    • Bโ€”PERFORMING OPERATIONS; TRANSPORTING
    • B24โ€”GRINDING; POLISHING
    • B24Dโ€”TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00โ€”Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08โ€”Circular back-plates for carrying flexible material

Definitions

  • the invention relates to a grinding wheel with which a workpiece can be abraded.
  • the grinding wheel can be driven to rotate about an axis of rotation and has a front side and a rear side facing away from the front side.
  • the grinding wheel is in particular connectable to a drive machine in order to be driven.
  • the grinding wheel has a multi-layer sanding disk package with a plurality of sanding blanks, wherein the sanding blanks are stacked flat over the axis of rotation and each have a central opening. The central openings together form a recess of the Schleifrondenvers.
  • Such a grinding tool is from the WO97 / 05991 A1 known.
  • the tool described therein comprises a plurality of superimposed discs of a flexible abrasive material, each disc having a central hub portion.
  • the discs each have in the hub portion on a central opening, with which the discs are threaded onto a mandrel or a spindle and are clamped together centrally via clamping plate.
  • the apertures of the discs together form a recess for receiving the mandrel or the spindle.
  • the individual discs are radially cut and form radially extending fingers, which form the grinding area of the tool.
  • the grinding area or the part of the tool which is active for machining a workpiece is not axially supported or stiffened in the direction parallel to the axis of rotation. Rather, the tool behaves flexibly according to the strengths and flexibilities of the individual discs. The wear during use of such grinding tools causes fanning and tearing big pieces of slices.
  • the DE 10 2011 108 859 A1 describes a tool for machining of material surfaces with a plurality of slices formed for machining, which are drivable about an axis of rotation.
  • the individual disks are stacked on one another in such a way that they overlap one another in such a way that a portion of each disk comes to rest on a disk through an incision of an overlying disk.
  • the discs are thus interleaved or interlaced.
  • These discs, which are interconnected in this way, can be designed as a grinding disc pack and fastened on a carrier plate.
  • DE 195 11 004 C1 shows a tool with a plate-shaped carrier having a mounting surface. On the mounting surface an annular lining is arranged.
  • the annular covering consists of a plurality of grinding blades, which are arranged in a ring-like shingle-like manner partially overlapping. Due to the shingle-like arrangement of the grinding blades, they are not aligned in a planar manner to a surface of the tool to be machined.
  • Object of the present invention is to provide a grinding wheel, which ensures an optimized alignment of the effective grinding surface to the workpiece and has a long service life.
  • the grinding wheel has a carrier plate, which is arranged in the recess formed by the apertures of at least a part number, respectively a plurality of grinding blanks, wherein each individual grinding blank is fastened to the carrier plate.
  • the individual Schleifronden must therefore not be interconnected or interconnected. However, it is not excluded that in addition to the attachment of each individual Schleifronde on the carrier plate and a compound of the Schleifronden can be provided with each other. It is important, however, that the abrasive blanks of the abrasive blotter package be individually secured to the backing, so that not by the tearing of a single Schleifronde from the carrier the entire Schleifrondenvers is detached from the carrier.
  • the Schleifrondenb is disposed between the front and the back of the grinding wheel.
  • an outer first sanding disk of the Schleifrondenpaktes forms the front.
  • an outer last abrasive blank of the abrasive blanket package forms the backside of the grinding wheel.
  • the axis of rotation is defined by a longitudinal axis extending perpendicular to the front and perpendicular to the back of the grinding wheel, which extends through the center of rotation of the grinding wheel.
  • the recess is formed differently at least over a longitudinal section in the circumference.
  • the shape and / or size of the recess is defined by the central openings of at least a part number or plurality of Schleifronden, respectively limited.
  • the central openings of at least a subset of the grinding blanks of the Schleifrondenpaktes can be designed to be different in size.
  • each of the openings in comparison with the other openings may have a different sized cross-sectional area.
  • some of the openings may be the same size or have the same size cross-sectional areas, so that only a subset of the apertures is formed differently large.
  • the recess may be designed in such a way that, starting from the front side toward the back side of the abrasive-disk package, it is designed to become larger in circumference.
  • the recess is thus designed substantially cone-shaped, with the cone opens to the back of the Schleifrondenvers out.
  • the central apertures of the grinding blanks can be made larger, starting at the front side toward the rear side, at least along a section extending parallel to the axis of rotation or longitudinal section, ie in the direction of the axis of rotation.
  • the abrasive blanks of a first half of the abrasive blotter package extending, for example, from the front to the top extends to the center of the grinding wheel, successively larger breakthroughs have.
  • the central apertures of the grinding blanks can be made to increase in size at least along a section of the abrasive blotter packet extending parallel to the axis of rotation starting from the rear side toward the front side.
  • the abrasive blanks of first and second halves of the abrasive blotter stack extending, for example, from the back to the center of the abrasive wheel may have successively larger apertures.
  • the grinding wheel can in particular a first half with abrasive blanks, the openings of which are larger, starting from the front to the back, and a second half with abrasive blanks, whose openings from the back to the front are larger, or from the center of the grinding wheel towards Back again become smaller.
  • the central openings of the grinding blanks are made larger toward the rear side. This means that the cross-sectional areas of the openings towards the back are successively larger. In the case of circular apertures, therefore, the diameters of the individual apertures become larger toward the rear.
  • the individual grinding blanks can each be connected to a central ring section on a mounting surface of the carrier plate arranged parallel to the front side.
  • the carrier plate is preferably formed in a longitudinal section, based on the axis of rotation, step-shaped.
  • the carrier plate may have a plurality of rotational axis direction one behind the other arranged mounting surfaces on different diameters about the axis of rotation.
  • the carrier plate is cast into the recess.
  • a curable material such as synthetic resin, epoxy resin, phenolic resin or polyurethane, or other material of an adhesive or Kittsystem be introduced, which holds the individual Schleifronden after curing.
  • a threaded element with an internal thread for fastening the grinding wheel to a drive machine is arranged in the carrier plate.
  • the threaded element e.g. in the form of a threaded nut to be inserted before pouring into the recess.
  • the breakthroughs of the Schleifronden may have a deviating from a circle cross-section.
  • the breakthroughs may be in the form of polygons.
  • other possibilities are conceivable, such as e.g. radially extending recesses or webs.
  • Such a configuration of the openings ensures an increased resistance to rotation of the Schleifrondenvers relative to the carrier plate.
  • the outer peripheral surfaces of the individual abrasive blanks are preferably identical in shape, size and orientation.
  • the outer peripheral surfaces may be circular, so that a circular cylindrical outer surface of the grinding wheel results around the axis of rotation.
  • the abrasive blanks may each have an outer circumferential surface, wherein the outer peripheral surfaces viewed in cross section of the grinding wheel are each arranged to form an angle between 5 and 85 ยฐ, in particular between 20 ยฐ and 40 ยฐ, preferably about 30 ยฐ to the axis of rotation.
  • the outer peripheral surfaces may be arranged roof-shaped.
  • the outer peripheral surfaces of the grinding blanks may lie on a common peripheral surface.
  • the peripheral surface may in particular be conical or cylindrical. Due to the outer peripheral surfaces aligned at an angle to the axis of rotation, good grinding results can be achieved even with a grinding wheel held at an angle to the workpiece.
  • the individual Schleifronden can also have radial recesses, wherein the radial recesses of the individual Schleifronden are identical and are arranged in alignment with each other in the direction of the axis of rotation. This ensures that the result of grinding through the recesses is visible to the user when the grinding wheel is driven in rotation.
  • the grinding wheel is rotationally symmetrical to the axis of rotation.
  • the abrasive wheel may include a backing layer for axially supporting the abrasive wheel package.
  • the support layer is preferably arranged on the back, but could also be arranged on the front side.
  • the support layer may be a fiber element, in particular of a fabric material.
  • the support layer is made of glass fibers and phenolic resin.
  • a maximum radial distance of an outer peripheral surface of the support layer is smaller than a maximum radial distance of an outer circumferential surface of the grinding wheel directly adjacent to the support layer or of all the abrasive blanks.
  • the abrasive blanks may each have an abrasive layer on a side facing the front of the abrasive wheel.
  • the abrasive blanks in particular all abrasive blanks, have their own abrasive layer or abrasive grain coating.
  • the abrasive layer may extend over the entire side facing the front of the grinding wheel or may comprise only a portion of this side. Because the abrasive blanks have an abrasive layer, the abrasive blanks may be successively consumed in sequence starting from the front to the back.
  • At least a subset of the abrasive blanks in addition to or as an alternative to the abrasive layer on the front side of the abrasive blank, may have an abrasive layer or an abrasive grain coating on a side facing the back side of the abrasive wheel. If the grinding wheel has the support layer, which is arranged for example on the back of the grinding wheel, the individual grinding blanks can only on the front-facing surfaces have an abrasive grain coating.
  • the last or the last and further, located directly in front of sanding blanks can be inserted and cast with the grain side opposite to the other layers.
  • the user can use the grinding wheel on both sides and / or also to turn.
  • This can be advantageous if the layers are different, for example, contain different grain sizes.
  • it can also be advantageous for identical abrasive blanks since the flexibility of the abrasive blanks in the grain direction is generally much lower. As a result, the two abrasive coatings of adjacent abrading blanks stabilize each other and the grinding wheel becomes stiffer.
  • the entire abrasive blank may be capable of being sanded, ie, the abrasive layer extends parallel to the axis of rotation over the entire transverse extent of the respective abrasive blank and thus can be used continuously for grinding starting from the side facing the front to the side facing the back.
  • the abrasive blanks of abrasive on pad may be a fabric, scrim or nonwoven (also pressed).
  • the pad used therein may be a fabric, scrim or nonwoven (also pressed).
  • the base and / or the Schleifronden can be as much as possible voltage isotropic.
  • the pad builds, or build the Schleifronden as evenly as possible, i. circular.
  • Tensile strengths in the warp and weft directions or also in the diagonal should be as identical as possible. Examples are, for example, coated abrasives and documents as used in segmented broad bands.
  • the abrasive cloth and the abrasive on backing have relatively high tensile strengths.
  • At least one of the grinding disks may have a plurality of grinding disk segments which abut against one another in the circumferential direction.
  • the waste can be optimized during production of the individual abrasive blanks.
  • the individual Schleifrondensegmente do not overlap, but butt against each other.
  • all of the abrasive blanks are composed of individual abrasive bladder segments.
  • FIGS. 1 to 4 show a first embodiment of a grinding wheel 3 and are described together below.
  • the grinding wheel 3 comprises a Schleifrondenvers 2 with a plurality of individual Schleifronden 6.
  • the Schleifrondenvert 2 is attached to a support plate 1, wherein each individual Schleifronde 6 is directly connected to the carrier plate 1 and is secured thereto.
  • the grinding wheel 3 is rotatably drivable about a rotation axis D.
  • the grinding wheel 3 has a front side 4 for machining a workpiece. Furthermore, the grinding wheel 3 has a rear side 5 facing away from the front side 4.
  • the individual grinding blanks 6 are stacked flat in the direction of the axis of rotation D one above the other.
  • a final blank 8 is provided, which is part of the multi-layer Schleifrondenpers 2.
  • the end blotter 8 is also an abrasive blotter of the abrasive blotter package 2. However, the blotter 8 is optional and may be omitted. All abrasive blanks 6 have a flexible carrier material and are provided with an abrasive grain coating at least on the surface facing the front side 4. The end blotter 8 may also be provided with an abrasive grain coating or made of the same material as the abrasive blanks 6. Thus, the end blade 8, as the first abrasive blotter, viewed from the front side 4 of the abrasive wheel 3, can contribute a large part to the grinding performance. In principle, the sanding blanks 6 and the end blanks 8 can each also be provided with an abrasive grain coating on the surface facing towards the back 5.
  • the grinding blanks 6 have central openings 7.
  • the final round 8 is provided with a central opening 9.
  • the mecanicronde 8 can also be designed continuously flat without central breakthrough.
  • the central openings 7 of the grinding blanks 6 are circular in the first embodiment of the grinding wheel 3 concentric with the axis of rotation D, wherein the diameter of the central openings 7, starting from the front side 4 towards the back 5, are larger.
  • the openings 7 thus form a central recess 10 in the Schleifrondenb second
  • the carrier plate 1 is cast into the recess 10.
  • a threaded nut 15 with which the grinding wheel 3 can be attached to a drive tool may now be filled with a hardening material (synthetic resin, epoxy resin, phenolic polyurethane or any other known in the art adhesive or Kittsystem), which holds the grinding blanks 6 and nut 15 after curing together.
  • threaded nut 15 As an alternative to the threaded nut 15, other threaded elements or sleeves can be used. The prerequisite is always the ability to mount on a drive machine.
  • the threaded nut 15 has the advantage of being quickly screwed onto the angle grinder.
  • An ordinary hexagon nut is already sufficient to improve the stability of the anchoring in the putty or resin system. But there are also other geometries, especially with increased surface (roughened, "wings", โ€œbrimโ€, etc.) conceivable.
  • the material of the threaded element may be metal, preferably stainless metal, but also plastic. Of course, a combination of metal thread, embedded in a plastic ring, etc. is conceivable.
  • the carrier plate 1 has a central aperture 14 for attachment to a prime mover.
  • the recess 10 and the carrier plate 1 are thus designed substantially cone-shaped, wherein the cone angle opens to the back 5 out.
  • the diameter of the apertures 7 of the individual sanding discs 6 are also stepped such that the back 5 facing open exposed ring sections 11, with which the individual sanding disks 6 are arranged in abutment to step-shaped mounting surfaces 12 of the support plate 1 and secured thereto. This ensures that the largest possible area of the individual grinding blanks 6 are in contact with the carrier plate 1. Likewise, the simplifyronde 8 a pointing towards the back 5 facing open ring portion 23, with which the final blank 8 is arranged in contact with a mounting surface 24 of the support plate 1 and is fixed thereto.
  • the individual grinding blanks 6 each have a circular outer circumferential surface 13.
  • the outer peripheral surfaces 13 of all the abrasive blanks 6 and the end blade 8 have the same diameter, so that the overall result is a circular-cylindrical outer surface of the abrasive blotter package 2 with the grinding wheel 3.
  • the recess 10 is designed stepped substantially frusto-conical, wherein the material which is poured into the recess 10 for the preparation of the carrier plate 1, when filling is not or only to a small extent between the grinding blasters 6 flows.
  • the cone angle of a lateral surface enveloping the carrier plate 10 is about 160 to 170 degrees, preferably about 164 degrees. This makes it possible that the worker can set the grinding wheel 3 at different angles to the surface of the workpiece to be machined. In this case, the Schleifrondenvers 2 can largely work off completely until the carrier plate 1 hits the workpiece.
  • FIG. 5 shows a second embodiment of a Schleifrondenvers 2 a grinding wheel 3.
  • the openings 7 of the grinding blanks 6 are not circular in cross-section in this embodiment, but deviate from a circular shape. They are in the form of a hexagonal polygon.
  • the carrier plate (not shown here) is designed accordingly, so that an increased rotational security of the Schleifrondenpers 2 is ensured relative to the carrier plate.
  • FIG. 6 shows a third embodiment of a Schleifrondenvers 2, wherein for increasing the rotational security of the Schleifrondenpers 2 with respect to the support plate.
  • 1 (Not shown here) 6 radially extending recesses 17 are provided in the individual grinding blanks, wherein the closest to the back 5 Schleifronde 6 instead of the recesses 17 radially extending webs 18 has.
  • FIG. 7 shows the top view of a front side 4 of a second embodiment of a grinding wheel 3, wherein the outer peripheral surfaces 13 of the grinding blanks 6 have a deviating from a circle contour.
  • radially inwardly extending viewing recesses 19 are provided, which allow a view of the grinding result with rotating driven grinding wheel 3.
  • FIGS. 8 and 9 show a third embodiment of a grinding wheel 3, wherein the outer peripheral surfaces 13 of the grinding blanks 6 and the end blank 8, as previously with respect to the FIGS. 1 to 6 described, form a circular cylindrical outer peripheral surface 20.
  • the grinding wheel 3 has a supporting layer 21 of a glass fiber fabric with phenolic resin.
  • the support layer 21 likewise has an opening 22 which, together with the further openings 7, 9 of the grinding blanks 6 and the end blank 8, forms the central recess 10.
  • the carrier plate 1 is cast into the recess 10, so that the disk-shaped support layer 21 is fixed to the carrier plate 1.
  • the apertures 7 of the grinding blanks 6 are larger, starting from the front side 4 towards the back 5, wherein the opening 22 of the support layer 21 is smaller than the opening 7 of the adjacent Schleifronde 6.
  • the support layer 21 has a smaller outer diameter than the Schleifronden 6.
  • the recess 10 of the Schleifrondenwovens 2 is not just filled with hardenable material, but also the last layer of Schleifronden 6 coated back with curable material. This will the last Schleifronde 6 on the back additionally bound to the support plate 1 and simultaneously reinforced against folding.
  • the last sanding blanks 6 may also be replaced by a fiber disk or a disk of another harder material, which is stronger than the overlying sanding blanks 6.
  • FIG. 10 a fourth embodiment of a Schleifrondenvers 2 is shown in side view.
  • the individual grinding blanks 6 each have a circular outer peripheral surface 13, wherein the outer peripheral surfaces 13 are designed in such a form and size that they form a cone-shaped outer circumferential surface area 20 of the Schleifrondenvers 2.
  • the outer peripheral surfaces 13 of the grinding blanks 6 are arranged with respect to the side view forming an angle โ‡ to the axis of rotation.
  • the angle โ‡ can be between 5 ยฐ and 85 ยฐ, in particular between 20 ยฐ and 40 ยฐ, and is shown here only by way of example with about 30 ยฐ. However, the optimum angle โ‡ results from the grinding task for which the grinding wheel 3 is to be used.
  • FIG. 11 shows the top view of a front side 4 of a fourth embodiment of a grinding wheel 3, wherein the outer peripheral surfaces 13 of the individual grinding blanks 6 and the two end blanks 8 each have a circular outer peripheral surface 13.
  • the outer circumferential surfaces 13 of all the abrasive blanks 6 and end blanks 8 have the same outer diameter, so that the overall result is a circular cylindrical outer surface of the abrasive blister package 2.
  • FIG. 12 the grinding wheel 3 according to the fourth embodiment is shown in sectional view. It can be seen that the apertures 7 of the grinding blanks 6, in contrast to the aforementioned embodiments, do not increase continuously starting from the front side 4 towards the rear side 5. Instead, the central breakthroughs 7 are the in FIG.
  • the opening 9 of the two end blanks 8 is formed identically and smaller than the openings 7 of the grinding blanks 6. Starting at the front 4 also correspond to the five here between the final blanks 8 grinding blanks 6 of the grinding wheel 3, the first and the fifth and the second and the third Schleifronde 6 in shape and size.
  • the diameters of the apertures 7, 9 of the individual abrasive blanks 6 and the front end 4 arranged on the end 8 in a longitudinal section extending from the front side 4 toward the center, are stepped such that facing the back 5 facing open ring sections 11, 23 form, with which these Schleifronden 6 and the front-sidecetronde 8 are arranged in abutment with step-shaped attachment surfaces 12, 24 of the support plate 1 and are attached thereto.
  • the diameter of the apertures 7, 9 of the other individual abrasive blanks 6 and arranged on the back 5 end 8 in a further longitudinal section extending from the center of the Schleifrondenwovenes 2 to the back 5, are stepped such that the front to the fourth open facing ring sections 11, 23 form, with which these Schleifronden 6 and 8 on the back redesignronde are arranged in abutment with step-shaped attachment surfaces 12, 24 of the support plate 1 and secured thereto. This ensures that the largest possible area of the individual grinding blanks 6 and the end blanks 8 are in contact with the carrier plate 1.
  • the last or the last and further layers of abrasive blanks 6 located directly in front of it can also be inserted and cast with the grain side opposite to the other layers.
  • the user can use the grinding wheel 3 on both sides and / or also to turn.
  • This can be advantageous if the layers are different, for example, contain different grain sizes.
  • the casting of the carrier plate 1 can be completely dispensed with.
  • a carrier plate for example a frusto-conical plate made of ABS plastic or other material, which is usually used for backing pad for Schleifrondenteller (flap discs) can be used.
  • Schleifronden 6 are attached with a Kittsystem.
  • the Schleifronden 6 consist of abrasive on pad.
  • the pad used therein may be a fabric, scrim or nonwoven (also pressed).
  • the base and / or the finished sanding blanks 6 and / or the end blanks 8 are as far as possible anisotropic.
  • the pad, or the Schleifronden 6, or the end blanks 8 builds as evenly as possible, i. circular.
  • Tensile strengths in the warp and weft directions or also in the diagonal should be as identical as possible. Examples are, for example, coated abrasives and documents as used in segmented broad bands. The abrasive cloth and the coated abrasive should generally have relatively high tensile strengths.
  • coated abrasives having high tear strength are used in as many directions as possible (longitudinal, transverse and diagonal).
  • the fabric of the coated abrasive used is an X or Y backing.
  • the abrasive grain is ceramic grain or mixtures thereof with zirconia corundum and / or corundum.

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Abstract

Die Erfindung betrifft eine Schleifscheibe (3), die um eine Drehachse (D) drehend antreibbar ist und eine Vorderseite (4) sowie eine von der Vorderseite (4) abgewandte Rรผckseite (5) aufweist, wobei die Schleifscheibe (3) weiterhin Folgendes aufweist: ein mehrlagiges Schleifrondenpaket (2) mit einer Mehrzahl von Schleifronden (6), die entlang der Drehachse (D) flรคchig รผbereinander gestapelt sind und die jeweils einen zentralen Durchbruch (7) aufweisen, wobei die zentralen Durchbrรผche (7) gemeinsam eine Ausnehmung (10) des Schleifrondenpakets (2) bilden, dadurch gekennzeichnet, dass die Schleifscheibe (3) einen Trรคgerteller (1) aufweist, der in der Ausnehmung (10) angeordnet ist, und dass die Schleifronden (6) jeweils einzeln an dem Trรคgerteller (1) befestigt sind.

Figure imgaf001
The invention relates to a grinding wheel (3) which can be driven to rotate about a rotation axis (D) and has a front side (4) and a rear side (5) facing away from the front side (4), wherein the grinding wheel (3) further comprises a multilayer sanding disk package (2) with a plurality of sanding disks (6) which are stacked flat over the axis of rotation (D) and which each have a central opening (7), wherein the central openings (7) together form a recess (10) form the Schleifrondenpakets (2), characterized in that the grinding wheel (3) has a carrier plate (1) which is arranged in the recess (10), and that the Schleifronden (6) are each individually secured to the carrier plate (1) ,
Figure imgaf001

Description

Die Erfindung betrifft eine Schleifscheibe, mit der ein Werkstรผck abrasiv bearbeitet werden kann. Die Schleifscheibe ist um eine Drehachse drehend antreibbar und weist eine Vorderseite und eine von der Vorderseite abgewandte Rรผckseite auf. Die Schleifscheibe ist insbesondere mit einer Antriebsmaschine verbindbar, um angetrieben zu werden. Die Schleifscheibe weist ein mehrlagiges Schleifrondenpaket mit einer Mehrzahl von Schleifronden auf, wobei die Schleifronden entlang der Drehachse flรคchig รผbereinander gestapelt sind und jeweils einen zentralen Durchbruch aufweisen. Die zentralen Durchbrรผche bilden gemeinsam eine Ausnehmung des Schleifrondenpakets.The invention relates to a grinding wheel with which a workpiece can be abraded. The grinding wheel can be driven to rotate about an axis of rotation and has a front side and a rear side facing away from the front side. The grinding wheel is in particular connectable to a drive machine in order to be driven. The grinding wheel has a multi-layer sanding disk package with a plurality of sanding blanks, wherein the sanding blanks are stacked flat over the axis of rotation and each have a central opening. The central openings together form a recess of the Schleifrondenpakets.

Ein solches Schleifwerkzeug ist aus der WO97/05991 A1 bekannt. Das dort beschriebene Werkzeug umfasst eine Vielzahl von รผbereinander angeordneten Scheiben aus einem flexiblen Schleifmaterial, wobei jede Scheibe einen zentralen Nabenabschnitt aufweist. Die Scheiben weisen jeweils im Nabenabschnitt einen zentralen Durchbruch auf, mit dem die Scheiben auf einen Dorn bzw. eine Spindel aufgefรคdelt sind und รผber Spannteller miteinander zentral verspannt sind. Die Durchbrรผche der Scheiben bilden zusammen eine Ausnehmung zur Aufnahme des Dorns bzw. der Spindel. In einem radial auรŸerhalb vom Nabenabschnitt angeordneten Ringabschnitt sind die einzelnen Scheiben radial eingeschnitten und bilden radial verlaufende Finger, die den Schleifbereich des Werkzeugs bilden. Der Schleifbereich bzw. der zum Bearbeiten eines Werkstรผcks aktive Teil des Werkzeugs ist in Richtung parallel zur Drehachse nicht axial abgestรผtzt oder versteift. Vielmehr verhรคlt sich das Werkzeug entsprechend der Festigkeiten und Flexibilitรคten der einzelnen Scheiben flexibel. Durch den VerschleiรŸ beim Gebrauch solcher Schleifwerkzeuge kommt es zum Auffรคchern und AusreiรŸen groรŸer Stรผcke der Scheiben.Such a grinding tool is from the WO97 / 05991 A1 known. The tool described therein comprises a plurality of superimposed discs of a flexible abrasive material, each disc having a central hub portion. The discs each have in the hub portion on a central opening, with which the discs are threaded onto a mandrel or a spindle and are clamped together centrally via clamping plate. The apertures of the discs together form a recess for receiving the mandrel or the spindle. In a radially outwardly of the hub portion arranged ring portion, the individual discs are radially cut and form radially extending fingers, which form the grinding area of the tool. The grinding area or the part of the tool which is active for machining a workpiece is not axially supported or stiffened in the direction parallel to the axis of rotation. Rather, the tool behaves flexibly according to the strengths and flexibilities of the individual discs. The wear during use of such grinding tools causes fanning and tearing big pieces of slices.

Die DE 10 2011 108 859 A1 beschreibt ein Werkzeug zur spanenden Bearbeitung von Materialoberflรคchen mit mehreren zum Spanen ausgebildeten Scheiben, die um eine Rotationsachse antreibbar sind. Die einzelnen Scheiben sind derart teilweise รผberlappend aufeinander geschichtet, dass ein Teil jeweils einer Scheibe durch einen Einschnitt einer darรผberliegenden Scheibe hindurch auf diese zu liegen kommt. Die Scheiben sind somit ineinander verschachtelt bzw. ineinander verschrรคnkt angeordnet. Diese so miteinander verbundenen Scheiben kรถnnen als Schleiflamellenpaket ausgebildet sein und auf einem Trรคgerteller befestigt sein.The DE 10 2011 108 859 A1 describes a tool for machining of material surfaces with a plurality of slices formed for machining, which are drivable about an axis of rotation. The individual disks are stacked on one another in such a way that they overlap one another in such a way that a portion of each disk comes to rest on a disk through an incision of an overlying disk. The discs are thus interleaved or interlaced. These discs, which are interconnected in this way, can be designed as a grinding disc pack and fastened on a carrier plate.

DE 195 11 004 C1 zeigt ein Werkzeug mit einem tellerfรถrmigen Trรคger, der eine Befestigungsflรคche aufweist. Auf der Befestigungsflรคche ist ein ringfรถrmiger Belag angeordnet. Der ringfรถrmige Belag besteht aus einer Vielzahl von Schleiflamellen, die ringfรถrmig schindelartig sich teilweise รผberlappend angeordnet sind. Durch die schindelartige Anordnung der Schleiflamellen sind diese nicht flรคchig zu einer Oberflรคche des zu bearbeitenden Werkzeugs ausgerichtet. DE 195 11 004 C1 shows a tool with a plate-shaped carrier having a mounting surface. On the mounting surface an annular lining is arranged. The annular covering consists of a plurality of grinding blades, which are arranged in a ring-like shingle-like manner partially overlapping. Due to the shingle-like arrangement of the grinding blades, they are not aligned in a planar manner to a surface of the tool to be machined.

Aufgabe der vorliegenden Erfindung ist es, eine Schleifscheibe bereitzustellen, die eine optimierte Ausrichtung der wirksamen Schleifoberflรคche zum Werkstรผck gewรคhrleistet und eine hohe Standzeit aufweist.Object of the present invention is to provide a grinding wheel, which ensures an optimized alignment of the effective grinding surface to the workpiece and has a long service life.

Die Aufgabe wird durch eine Schleifscheibe mit den Merkmalen des Anspruchs 1 gelรถst. Vorteilhafte Ausfรผhrungsbeispiele ergeben sich aus den abhรคngigen Ansprรผchen.The object is achieved by a grinding wheel with the features of claim 1. Advantageous embodiments will be apparent from the dependent claims.

ErfindungsgemรครŸ ist demnach vorgesehen, dass die Schleifscheibe einen Trรคgerteller aufweist, der in der durch die Durchbrรผche zumindest einer Teilzahl, respektive Vielzahl der Schleifronden gebildeten Ausnehmung angeordnet ist, wobei jede einzelne Schleifronde an dem Trรคgerteller befestigt ist. Die einzelnen Schleifronden mรผssen somit nicht untereinander bzw. miteinander verbunden sein. Es ist jedoch nicht ausgeschlossen, dass neben der Befestigung jeder einzelnen Schleifronde an dem Trรคgerteller auch eine Verbindung der Schleifronden untereinander vorgesehen sein kann. Wichtig ist jedoch, dass die Schleifronden des Schleifrondenpakets einzeln an dem Trรคger befestigt sind, so dass nicht durch das LosreiรŸen einer einzelnen Schleifronde von dem Trรคger das gesamte Schleifrondenpaket vom Trรคger abgelรถst wird. Das Schleifrondenpaket ist zwischen der Vorderseite und der Rรผckseite der Schleifscheibe angeordnet. Insbesondere bildet eine auรŸenliegende erste Schleifronde des Schleifrondenpaktes die Vorderseite. Insbesondere bildet eine auรŸenliegende letzte Schleifronde des Schleifrondenpakets die Rรผckseite der Schleifscheibe. Insbesondere ist die Drehachse durch eine sich senkrecht zur Vorderseite und senkrecht zur Rรผckseite der Schleifscheibe erstreckende Lรคngsachse definiert, die durch den Rotationsmittelpunkt der Schleifscheibe verlรคuft.According to the invention, it is accordingly provided that the grinding wheel has a carrier plate, which is arranged in the recess formed by the apertures of at least a part number, respectively a plurality of grinding blanks, wherein each individual grinding blank is fastened to the carrier plate. The individual Schleifronden must therefore not be interconnected or interconnected. However, it is not excluded that in addition to the attachment of each individual Schleifronde on the carrier plate and a compound of the Schleifronden can be provided with each other. It is important, however, that the abrasive blanks of the abrasive blotter package be individually secured to the backing, so that not by the tearing of a single Schleifronde from the carrier the entire Schleifrondenpaket is detached from the carrier. The Schleifrondenpaket is disposed between the front and the back of the grinding wheel. In particular, an outer first sanding disk of the Schleifrondenpaktes forms the front. In particular, an outer last abrasive blank of the abrasive blanket package forms the backside of the grinding wheel. In particular, the axis of rotation is defined by a longitudinal axis extending perpendicular to the front and perpendicular to the back of the grinding wheel, which extends through the center of rotation of the grinding wheel.

GemรครŸ einem Aspekt der vorliegenden Erfindung ist die Ausnehmung zumindest รผber einen Lรคngsabschnitt im Umfang unterschiedlich ausgebildet. Insbesondere wird die Form und/oder GrรถรŸe der Ausnehmung durch die zentralen Durchbrรผche von zumindest einer Teilzahl oder Vielzahl der Schleifronden definiert, respektive begrenzt. Weiterhin kรถnnen die zentralen Durchbrรผche von zumindest einer Teilmenge der Schleifronden des Schleifrondenpaktes unterschiedlich groรŸ ausgebildet sein. Mit anderen Worten kann jeder der Durchbrรผche im Vergleich mit den weiteren Durchbrรผchen eine unterschiedlich groรŸe Querschnittsflรคche aufweisen. Ebenso kรถnnen einige der Durchbrรผche gleich groรŸ sein bzw. gleich groรŸe Querschnittsflรคchen aufweisen, sodass lediglich eine Teilmenge der Durchbrรผche unterschiedlich groรŸ ausgebildet ist.According to one aspect of the present invention, the recess is formed differently at least over a longitudinal section in the circumference. In particular, the shape and / or size of the recess is defined by the central openings of at least a part number or plurality of Schleifronden, respectively limited. Furthermore, the central openings of at least a subset of the grinding blanks of the Schleifrondenpaktes can be designed to be different in size. In other words, each of the openings in comparison with the other openings may have a different sized cross-sectional area. Likewise, some of the openings may be the same size or have the same size cross-sectional areas, so that only a subset of the apertures is formed differently large.

Insbesondere kann die Ausnehmung derart gestaltet sein, dass diese, ausgehend von der Vorderseite hin zur Rรผckseite des Schleifrondenpakets, im Umfang grรถรŸer werdend ausgebildet ist. Die Ausnehmung ist somit im Wesentlichen konusfรถrmig gestaltet, wobei sich der Konus zur Rรผckseite des Schleifrondenpakets hin รถffnet. Durch die konusfรถrmige Ausnehmung und dem darin befindlichen Trรคgerteller wird gewรคhrleistet, dass jede Schleifronde in unmittelbaren Kontakt zum Trรคgerteller angeordnet ist und mit diesem verbunden werden kann. Die konusfรถrmige Gestaltung der Ausnehmung gewรคhrleistet zudem, dass mรถglichst groรŸe Flรคchenbereiche der Schleifronden mit dem Trรคgerteller verbunden werden kรถnnen. Vorzugsweise kรถnnen die zentralen Durchbrรผche der Schleifronden zumindest entlang eines sich parallel zur Drehachse erstreckenden Abschnitts, respektive Lรคngsabschnitts, d.h. in Richtung der Drehachse, des Schleifrondenpakets ausgehend von der Vorderseite hin zur Rรผckseite grรถรŸer werdend ausgebildet sein. Somit kรถnnen beispielsweise die Schleifronden einer ersten Hรคlfte des Schleifrondenpakets, die sich zum Beispiel von der Vorderseite bis zur Mitte der Schleifscheibe erstreckt, sukzessive grรถรŸer werdende Durchbrรผche aufweisen. Alternativ oder zusรคtzlich kรถnnen die zentralen Durchbrรผche der Schleifronden zumindest entlang eines sich parallel zur Drehachse erstreckenden Abschnitts des Schleifrondenpakets ausgehend von der Rรผckseite hin zur Vorderseite grรถรŸer werdend ausgebildet sind. Somit kรถnnen beispielsweise die Schleifronden einer ersten bzw. zweiten Hรคlfte des Schleifrondenpakets, die sich zum Beispiel von der Rรผckseite bis zur Mitte der Schleifscheibe erstreckt, sukzessive grรถรŸer werdende Durchbrรผche aufweisen. In Kombination kann die Schleifscheibe insbesondere eine erste Hรคlfte mit Schleifronden, deren Durchbrรผche ausgehend von der Vorderseite zur Rรผckseite grรถรŸer werden, und eine zweite Hรคlfte mit Schleifronden, deren Durchbrรผche ausgehend von der Rรผckseite zur Vorderseite grรถรŸer werden, bzw. von der Mitte der Schleifscheibe hin zur Rรผckseite wieder kleiner werden.In particular, the recess may be designed in such a way that, starting from the front side toward the back side of the abrasive-disk package, it is designed to become larger in circumference. The recess is thus designed substantially cone-shaped, with the cone opens to the back of the Schleifrondenpakets out. By the conical recess and the carrier plate therein ensures that each abrasive blank is placed in direct contact with the carrier plate and can be connected to this. The conical shape of the recess also ensures that the largest possible surface areas of the Schleifronden can be connected to the carrier plate. Preferably, the central apertures of the grinding blanks can be made larger, starting at the front side toward the rear side, at least along a section extending parallel to the axis of rotation or longitudinal section, ie in the direction of the axis of rotation. Thus, for example, the abrasive blanks of a first half of the abrasive blotter package extending, for example, from the front to the top extends to the center of the grinding wheel, successively larger breakthroughs have. Alternatively or additionally, the central apertures of the grinding blanks can be made to increase in size at least along a section of the abrasive blotter packet extending parallel to the axis of rotation starting from the rear side toward the front side. Thus, for example, the abrasive blanks of first and second halves of the abrasive blotter stack extending, for example, from the back to the center of the abrasive wheel, may have successively larger apertures. In combination, the grinding wheel can in particular a first half with abrasive blanks, the openings of which are larger, starting from the front to the back, and a second half with abrasive blanks, whose openings from the back to the front are larger, or from the center of the grinding wheel towards Back again become smaller.

Zur Ausbildung der Ausnehmung in Form eines Konus kann vorgesehen sein, dass die zentralen Durchbrรผche der Schleifronden, ausgehend von der Vorderseite des Schleifrondenpakets, hin zur Rรผckseite grรถรŸer werdend ausgebildet sind. Dies bedeutet, dass die Querschnittsflรคchen der Durchbrรผche zur Rรผckseite hin sukzessive grรถรŸer werden. Bei kreisfรถrmigen Durchbrรผchen werden demnach die Durchmesser der einzelnen Durchbrรผche zur Rรผckseite hin grรถรŸer.To form the recess in the form of a cone, it may be provided that the central openings of the grinding blanks, starting from the front side of the abrasive blanket package, are made larger toward the rear side. This means that the cross-sectional areas of the openings towards the back are successively larger. In the case of circular apertures, therefore, the diameters of the individual apertures become larger toward the rear.

Die einzelnen Schleifronden kรถnnen jeweils mit einem zentralen Ringabschnitt an einer parallel zur Vorderseite angeordneten Befestigungsflรคche des Trรคgertellers mit diesem verbunden sein. Hierzu ist der Trรคgerteller vorzugsweise im Lรคngsschnitt, bezogen auf die Drehachse, stufenfรถrmig ausgebildet. Der Trรคgerteller kann mehrere in Drehachsenrichtung hintereinander angeordnete Befestigungsflรคchen auf unterschiedlichen Durchmessern um die Drehachse aufweisen.The individual grinding blanks can each be connected to a central ring section on a mounting surface of the carrier plate arranged parallel to the front side. For this purpose, the carrier plate is preferably formed in a longitudinal section, based on the axis of rotation, step-shaped. The carrier plate may have a plurality of rotational axis direction one behind the other arranged mounting surfaces on different diameters about the axis of rotation.

Bei einer bevorzugten Ausfรผhrungsform ist der Trรคgerteller in die Ausnehmung eingegossen. Hierzu kann in die Ausnehmung ein aushรคrtbares Material, wie beispielsweise Kunstharz, Epoxidharz, Phenolharz oder Polyurethan, oder ein anderes Material eines Klebe- oder Kittsystem, eingebracht werden, welches die einzelnen Schleifronden nach dem Aushรคrten zusammenhรคlt.In a preferred embodiment, the carrier plate is cast into the recess. For this purpose, in the recess, a curable material, such as synthetic resin, epoxy resin, phenolic resin or polyurethane, or other material of an adhesive or Kittsystem be introduced, which holds the individual Schleifronden after curing.

Vorzugsweise ist in dem Trรคgerteller ein Gewindeelement mit einem Innengewinde zum Befestigen der Schleifscheibe an einer Antriebsmaschine angeordnet. In der Ausfรผhrungsform, bei der der Trรคgerteller in die Ausnehmung eingegossen ist, kann das Gewindeelement, z.B. in Form einer Gewindemutter, vor dem AusgieรŸen in die Ausnehmung eingelegt werden.Preferably, a threaded element with an internal thread for fastening the grinding wheel to a drive machine is arranged in the carrier plate. In the embodiment in which the carrier plate is cast into the recess, the threaded element, e.g. in the form of a threaded nut to be inserted before pouring into the recess.

Die Durchbrรผche der Schleifronden kรถnnen einen von einem Kreis abweichenden Querschnitt aufweisen. Zum Beispiel kรถnnen die Durchbrรผche in Form von Polygonen gestaltet sein. Es sind jedoch auch andere Mรถglichkeiten denkbar, wie z.B. radial verlaufende Ausnehmungen oder Stege. Eine solche Ausgestaltung der Durchbrรผche gewรคhrleistet eine erhรถhte Verdrehsicherheit des Schleifrondenpakets gegenรผber dem Trรคgerteller.The breakthroughs of the Schleifronden may have a deviating from a circle cross-section. For example, the breakthroughs may be in the form of polygons. However, other possibilities are conceivable, such as e.g. radially extending recesses or webs. Such a configuration of the openings ensures an increased resistance to rotation of the Schleifrondenpakets relative to the carrier plate.

Die AuรŸenumfangsflรคchen der einzelnen Schleifronden sind vorzugsweise in Form, GrรถรŸe und Ausrichtung identisch. Zum Beispiel kรถnnen die AuรŸenumfangsflรคchen kreisfรถrmig ausgebildet sein, so dass sich eine kreiszylindrische AuรŸenflรคche der Schleifscheibe um die Drehachse ergibt. Weiterhin kรถnnen die Schleifronden jeweils eine AuรŸenumfangsflรคche aufweisen, wobei die AuรŸenumfangsflรคchen im Querschnitt der Schleifscheibe betrachtet jeweils unter Bildung eines Winkels zwischen 5 und 85ยฐ, insbesondere zwischen 20ยฐ und 40ยฐ, vorzugsweise etwa 30ยฐ zur Drehachse angeordnet sind. Somit kรถnnen die AuรŸenumfangsflรคchen dachfรถrmig angeordnet sein. Des Weiteren kรถnnen die AuรŸenumfangsflรคchen der Schleifronden auf einer gemeinsamen Umfangsflรคche liegen. Die Umfangsflรคche kann insbesondere konisch oder zylindrisch ausgebildet sein. Durch die winklig zur Drehachse ausgerichteten AuรŸenumfangsflรคchen kรถnnen auch bei einer schrรคg zum Werkstรผck gehaltenen Schleifscheibe gute Schleifergebnisse erzielt werden.The outer peripheral surfaces of the individual abrasive blanks are preferably identical in shape, size and orientation. For example, the outer peripheral surfaces may be circular, so that a circular cylindrical outer surface of the grinding wheel results around the axis of rotation. Furthermore, the abrasive blanks may each have an outer circumferential surface, wherein the outer peripheral surfaces viewed in cross section of the grinding wheel are each arranged to form an angle between 5 and 85 ยฐ, in particular between 20 ยฐ and 40 ยฐ, preferably about 30 ยฐ to the axis of rotation. Thus, the outer peripheral surfaces may be arranged roof-shaped. Furthermore, the outer peripheral surfaces of the grinding blanks may lie on a common peripheral surface. The peripheral surface may in particular be conical or cylindrical. Due to the outer peripheral surfaces aligned at an angle to the axis of rotation, good grinding results can be achieved even with a grinding wheel held at an angle to the workpiece.

Die einzelnen Schleifronden kรถnnen zudem radiale Ausnehmungen aufweisen, wobei die radialen Ausnehmungen der einzelnen Schleifronden identisch ausgebildet sind und in Richtung zur Drehachse fluchtend zueinander angeordnet sind. Hierdurch wird gewรคhrleistet, dass bei drehend angetriebener Schleifscheibe das Schleifergebnis durch die Ausnehmungen fรผr den Benutzer sichtbar ist. Insbesondere ist die Schleifscheibe rotationssymmetrisch zur Drehachse.The individual Schleifronden can also have radial recesses, wherein the radial recesses of the individual Schleifronden are identical and are arranged in alignment with each other in the direction of the axis of rotation. This ensures that the result of grinding through the recesses is visible to the user when the grinding wheel is driven in rotation. In particular, the grinding wheel is rotationally symmetrical to the axis of rotation.

GemรครŸ einem weiteren Aspekt der vorliegenden Erfindung kann die Schleifscheibe eine Stรผtzschicht zur axialen Abstรผtzung des Schleifrondenpaketes aufweisen. Die Stรผtzschicht ist vorzugsweise an der Rรผckseite angeordnet, kรถnnte aber auch an der Vorderseite angeordnet sein. Die Stรผtzschicht kann ein Fiberelement, insbesondere aus einem Gewebematerial, sein. Vorzugsweise ist die Stรผtzschicht aus Glasfasern und Phenolharz hergestellt. Somit ist die Stรผtzschicht im Vergleich zu den Schleifronden fester, bzw. unnachgiebiger, d.h. die Flexibilitรคt der Schleifronden ist grรถรŸer als die der Stรผtzschicht. Im Laufe der Anwendung der Schleifscheibe und dem damit verbundenen zunehmenden VerschleiรŸ der Schleifronden kann es unter Umstรคnden zu einem langsamen Umbiegen oder Umklappen der untersten oder sogar unteren Lagen der Schleifronden kommen. Dies kann durch die Stรผtzschicht zur axialen Abstรผtzung des Schleifrondenpakets verhindert werden. Insbesondere ist ein maximaler radialer Abstand einer AuรŸenumfangsflรคche der Stรผtzschicht kleiner als ein maximaler radialer Abstand einer AuรŸenumfangsflรคche der unmittelbar an der Stรผtzschicht anliegenden Schleifronde oder aller Schleifronden. Somit kann die Schleifscheibe beim schrรคgen Ansetzen der Schleifscheibe am Werkstรผck radial auรŸenseitig geringfรผgig nachgeben, wodurch bessere Schleifergebnisse erzielt werden.In accordance with another aspect of the present invention, the abrasive wheel may include a backing layer for axially supporting the abrasive wheel package. The support layer is preferably arranged on the back, but could also be arranged on the front side. The support layer may be a fiber element, in particular of a fabric material. Preferably, the support layer is made of glass fibers and phenolic resin. Thus, the backing layer is firmer, or more relentless, as compared to the abrasive blanks. the flexibility of the abrasive blanks is greater than that of the backing layer. In the course of the application of the grinding wheel and the associated increased wear of the abrasive blanks, it may sometimes come to a slow bending or folding over the lowest or even lower layers of Schleifronden. This can be prevented by the support layer for axial support of the Schleifrondenpakets. In particular, a maximum radial distance of an outer peripheral surface of the support layer is smaller than a maximum radial distance of an outer circumferential surface of the grinding wheel directly adjacent to the support layer or of all the abrasive blanks. Thus, the grinding wheel at the oblique attachment of the grinding wheel on the workpiece radially outwardly slightly yield, whereby better grinding results are achieved.

Weiterhin kann zumindest eine Teilmenge der Schleifronden jeweils an einer zur Vorderseite der Schleifscheibe weisenden Seite eine Schleifschicht aufweisen. D.h. die Schleifronden, insbesondere alle Schleifronden, weisen eine eigene Schleifschicht, respektive eine Schleifkornbeschichtung auf. Die Schleifschicht kann sich รผber die gesamte zur Vorderseite der Schleifscheibe weisenden Seite erstrecken oder nur einen Teilabschnitt dieser Seite umfassen. Dadurch, dass die Schleifronden eine Schleifschicht aufweisen, kรถnnen die Schleifronden der Reihe nach beginnend an der Vorderseite hin zur Rรผckseite nacheinander verbraucht werden. Sobald die oberste Schleifronde abgenutzt, bzw. aufgebraucht ist, kann insbesondere ohne Absetzen der Schleifscheibe mit der darunter liegenden nรคchsten Schleifronde weiter geschliffen werden. In analoger Weise kann zumindest eine Teilmenge der Schleifronden zusรคtzlich oder alternativ zur Schleifschicht an der Vorderseite der Schleifronde an einer zur Rรผckseite der Schleifscheibe weisenden Seite eine Schleifschicht, respektive eine Schleifkornbeschichtung aufweisen. Wenn die Schleifscheibe die Stรผtzschicht aufweist, die beispielsweise an der Rรผckseite der Schleifscheibe angeordnet ist, kรถnnen die einzelnen Schleifronden auch nur an der zur Vorderseite weisenden Oberflรคchen eine Schleifkornbeschichtung aufweisen. Weiterhin kann die letzte oder die letzte und weitere, direkt davor befindliche Lagen von Schleifronden auch mit der Kornseite entgegengesetzt der anderen Lagen eingelegt und vergossen werden. In diesem Fall kann der Anwender die Schleifscheibe beidseitig verwenden und/oder auch wenden. Dies kann von Vorteil sein, wenn die Lagen unterschiedlich sind, zum Beispiel unterschiedliche Kรถrnungen enthalten. Es kann aber auch bei identischem Schleifronden von Vorteil sein, da die Flexibilitรคt der Schleifronden in Kornrichtung in der Regel deutlich geringer ist. Dadurch stabilisieren sich die beiden Schleifbeschichtungen benachbarter in Anlage zueinander befindlicher Schleifronden gegenseitig und die Schleifscheibe wird steifer. Insbesondere kann die gesamte Schleifronde schleiffรคhig sein, d.h. die Schleifschicht erstreckt sich parallel zur Drehachse รผber die gesamte Quererstreckung der jeweiligen Schleifronde und kann somit beginnend bei der zur Vorderseite weisenden Seite bis hin zu der zur Rรผckseite weisenden Seite durchgehend zum Schleifen verwendet werden.Furthermore, at least a subset of the abrasive blanks may each have an abrasive layer on a side facing the front of the abrasive wheel. This means that the abrasive blanks, in particular all abrasive blanks, have their own abrasive layer or abrasive grain coating. The abrasive layer may extend over the entire side facing the front of the grinding wheel or may comprise only a portion of this side. Because the abrasive blanks have an abrasive layer, the abrasive blanks may be successively consumed in sequence starting from the front to the back. As soon as the uppermost abrasive blank has worn off or is used up, it is possible, in particular, to continue grinding without settling the grinding disk with the next grinding blank beneath it. Analogously, at least a subset of the abrasive blanks, in addition to or as an alternative to the abrasive layer on the front side of the abrasive blank, may have an abrasive layer or an abrasive grain coating on a side facing the back side of the abrasive wheel. If the grinding wheel has the support layer, which is arranged for example on the back of the grinding wheel, the individual grinding blanks can only on the front-facing surfaces have an abrasive grain coating. Furthermore, the last or the last and further, located directly in front of sanding blanks can be inserted and cast with the grain side opposite to the other layers. In this case, the user can use the grinding wheel on both sides and / or also to turn. This can be advantageous if the layers are different, for example, contain different grain sizes. However, it can also be advantageous for identical abrasive blanks since the flexibility of the abrasive blanks in the grain direction is generally much lower. As a result, the two abrasive coatings of adjacent abrading blanks stabilize each other and the grinding wheel becomes stiffer. In particular, the entire abrasive blank may be capable of being sanded, ie, the abrasive layer extends parallel to the axis of rotation over the entire transverse extent of the respective abrasive blank and thus can be used continuously for grinding starting from the side facing the front to the side facing the back.

Insbesondere bestehen die Schleifronden aus Schleifmittel auf Unterlage. Die darin verwendete Unterlage kann ein Gewebe, Gelege oder Vlies (auch verpresst) sein. Es kommt die ganze Bandbreite der gรคngigen Unterlagen fรผr Schleifmittel auf Unterlage in Frage, auch Kombinationen, wie z.B. Papier-Gewebe oder andere auf dem Markt bekannten Materialkombinationen oder (schwache) Vulkanfiber, die sich beim Anwenden abbaut, um einen kontinuierlichen VerschleiรŸ des Trรคgers sicherzustellen. Des Weiteren kรถnnen die Unterlage und/oder die Schleifronden mรถglichst spannungsisotrop sein. Somit baut sich die Unterlage, bzw. bauen sich die Schleifronden mรถglichst gleichmรครŸig, d.h. kreisfรถrmig ab. Zugfestigkeiten in Kett- und Schussrichtung bzw. auch in der Diagonalen sollten mรถglichst identisch sein. Beispiele sind zum Beispiel Schleifmittel auf Unterlage und Unterlagen dafรผr, wie Sie bei segmentierten Breitbรคndern verwendet werden. Weiterhin kann vorgesehen sein, dass das Schleifleinen und das Schleifmittel auf Unterlage relativ hohe Zugfestigkeiten aufweisen.In particular, the abrasive blanks of abrasive on pad. The pad used therein may be a fabric, scrim or nonwoven (also pressed). There is the whole range of common substrates for coated abrasive, even combinations, such as. Paper webs or other material combinations or (weak) vulcanized fiber known on the market which degrades upon application to ensure continued wear of the wearer. Furthermore, the base and / or the Schleifronden can be as much as possible voltage isotropic. Thus, the pad builds, or build the Schleifronden as evenly as possible, i. circular. Tensile strengths in the warp and weft directions or also in the diagonal should be as identical as possible. Examples are, for example, coated abrasives and documents as used in segmented broad bands. Furthermore, it can be provided that the abrasive cloth and the abrasive on backing have relatively high tensile strengths.

GemรครŸ einer weiteren Ausfรผhrungsform der erfindungsgemรครŸen Schleifscheibe kann zumindest eine der Schleifronden eine Mehrzahl an Schleifrondensegmenten aufweisen, die in Umfangsrichtung verteilt stumpf aneinanderstoรŸen. Dadurch kann der Verschnitt bei Herstellung der einzelnen Schleifronden optimiert werden. Mit anderen Worten ist zumindest eine der Schleifronden aus mehreren einzelnen Teilstรผcken, den Schleifrondensegmenten, zu einer Schleifronde zusammengesetzt. Die einzelnen Schleifrondensegmente รผberlappen sich nicht, sondern stoรŸen stumpf aneinander. Insbesondere sind alle der Schleifronden aus einzelnen Schleifrondensegmenten zusammengesetzt.In accordance with a further embodiment of the grinding wheel according to the invention, at least one of the grinding disks may have a plurality of grinding disk segments which abut against one another in the circumferential direction. As a result, the waste can be optimized during production of the individual abrasive blanks. In other words, at least one of the Schleifronden of several individual sections, the Schleifrondensegmenten, assembled into a Schleifronde. The individual Schleifrondensegmente do not overlap, but butt against each other. In particular, all of the abrasive blanks are composed of individual abrasive bladder segments.

Bevorzugte Ausfรผhrungsbeispiele werden im Folgenden anhand der Zeichnungen nรคher erlรคutert. Hierin zeigen:

Figur 1
eine Draufsicht auf die Rรผckseite einer ersten Ausfรผhrungsform einer erfindungsgemรครŸen Schleifscheibe;
Figur 2
einen Querschnitt der Schleifscheibe gemรครŸ Figur 1;
Figur 3
eine perspektivische Darstellung des Schleifrondenpakets der Schleifscheibe gemรครŸ Figur 1;
Figur 4
eine perspektivische Ansicht des Schleifrondenpakets gemรครŸ Figur 3 mit in die Ausnehmung eingelegter Gewindemutter;
Figur 5
eine perspektivische Ansicht einer zweiten Ausfรผhrungsform eines Schleifrondenpakets;
Figur 6
eine perspektivische Ansicht einer dritten Ausfรผhrungsform eines Schleifrondenpakets;
Figur 7
eine Draufsicht auf die Vorderseite einer zweiten Ausfรผhrungsform einer erfindungsgemรครŸen Schleifscheibe;
Figur 8
eine Draufsicht auf die Rรผckseite einer dritten Ausfรผhrungsform einer erfindungsgemรครŸen Schleifscheibe;
Figur 9
einen Querschnitt der Schleifscheibe gemรครŸ Figur 8;
Figur 10
eine Seitenansicht einer vierten Ausfรผhrungsform eines Schleifrondenpakets;
Figur 11
eine Draufsicht auf die Vorderseite einer vierten Ausfรผhrungsform einer erfindungsgemรครŸen Schleifscheibe; und
Figur 12
einen Querschnitt der Schleifscheibe gemรครŸ Figur 11.
Preferred embodiments are explained in more detail below with reference to the drawings. Herein show:
FIG. 1
a plan view of the back of a first embodiment of a grinding wheel according to the invention;
FIG. 2
a cross section of the grinding wheel according to FIG. 1 ;
FIG. 3
a perspective view of the Schleifrondenpakets the grinding wheel according to FIG. 1 ;
FIG. 4
a perspective view of the Schleifrondenpakets according to FIG. 3 with threaded nut inserted into the recess;
FIG. 5
a perspective view of a second embodiment of a Schleifrondenpakets;
FIG. 6
a perspective view of a third embodiment of a Schleifrondenpakets;
FIG. 7
a plan view of the front of a second embodiment of a grinding wheel according to the invention;
FIG. 8
a plan view of the back of a third embodiment of a grinding wheel according to the invention;
FIG. 9
a cross section of the grinding wheel according to FIG. 8 ;
FIG. 10
a side view of a fourth embodiment of a Schleifrondenpakets;
FIG. 11
a plan view of the front side of a fourth embodiment of a grinding wheel according to the invention; and
FIG. 12
a cross section of the grinding wheel according to FIG. 11 ,

Die Figuren 1 bis 4 zeigen eine erste Ausfรผhrungsform einer Schleifscheibe 3 und werden im Folgenden zusammen beschrieben.The FIGS. 1 to 4 show a first embodiment of a grinding wheel 3 and are described together below.

Die Schleifscheibe 3 umfasst ein Schleifrondenpaket 2 mit einer Mehrzahl von einzelnen Schleifronden 6. Das Schleifrondenpaket 2 ist an einem Trรคgerteller 1 befestigt, wobei jede einzelne Schleifronde 6 mit dem Trรคgerteller 1 unmittelbar verbunden ist bzw. an diesem befestigt ist. Die Schleifscheibe 3 ist um eine Drehachse D drehend antreibbar. Die Schleifscheibe 3 weist eine Vorderseite 4 zur spanenden Bearbeitung eines Werkstรผcks auf. Ferner weist die Schleifscheibe 3 eine von der Vorderseite 4 abgewandte Rรผckseite 5 auf. Die einzelnen Schleifronden 6 sind flรคchig in Richtung der Drehachse D รผbereinander gestapelt. Auf der Vorderseite 4 ist eine Abschlussronde 8 vorgesehen, die Teil des mehrlagigen Schleifrondenpakets 2 ist. Die Abschlussronde 8 ist ebenfalls eine Schleifronde des Schleifrondenpaketes 2. Die Abschlussronde 8 ist jedoch optional und kann auch weggelassen werden. Alle Schleifronden 6 weisen ein flexibles Trรคgermaterial auf und sind zumindest auf zur Vorderseite 4 hin gerichteten Oberflรคche mit einer Schleifkornbeschichtung versehen. Die Abschlussronde 8 kann ebenfalls mit einer Schleifkornbeschichtung versehen sein bzw. aus demselben Material hergestellt sein, wie die Schleifronden 6. Somit kann die Abschlussronde 8 als erste Schleifronde betrachtet von der Vorderseite 4 der Schleifscheibe 3 einen GroรŸteil zur Schleifleistung beitragen. Grundsรคtzlich kรถnnen die Schleifronden 6 und die Abschlussronde 8 jeweils auch auf zur Rรผckseite 5 hin gerichteten Oberflรคche mit einer Schleifkornbeschichtung ausgestattet sein.The grinding wheel 3 comprises a Schleifrondenpaket 2 with a plurality of individual Schleifronden 6. The Schleifrondenpaket 2 is attached to a support plate 1, wherein each individual Schleifronde 6 is directly connected to the carrier plate 1 and is secured thereto. The grinding wheel 3 is rotatably drivable about a rotation axis D. The grinding wheel 3 has a front side 4 for machining a workpiece. Furthermore, the grinding wheel 3 has a rear side 5 facing away from the front side 4. The individual grinding blanks 6 are stacked flat in the direction of the axis of rotation D one above the other. On the front side 4, a final blank 8 is provided, which is part of the multi-layer Schleifrondenpakets 2. The end blotter 8 is also an abrasive blotter of the abrasive blotter package 2. However, the blotter 8 is optional and may be omitted. All abrasive blanks 6 have a flexible carrier material and are provided with an abrasive grain coating at least on the surface facing the front side 4. The end blotter 8 may also be provided with an abrasive grain coating or made of the same material as the abrasive blanks 6. Thus, the end blade 8, as the first abrasive blotter, viewed from the front side 4 of the abrasive wheel 3, can contribute a large part to the grinding performance. In principle, the sanding blanks 6 and the end blanks 8 can each also be provided with an abrasive grain coating on the surface facing towards the back 5.

Die Schleifronden 6 weisen zentrale Durchbrรผche 7 auf. Auch die Abschlussronde 8 ist mit einem zentralen Durchbruch 9 versehen. Die Abschlussronde 8 kann jedoch auch durchgehend flรคchig ohne zentralen Durchbruch ausgestaltet sein.The grinding blanks 6 have central openings 7. The final round 8 is provided with a central opening 9. However, the Abschlussronde 8 can also be designed continuously flat without central breakthrough.

Die zentralen Durchbrรผche 7 der Schleifronden 6 sind im ersten Ausfรผhrungsbeispiel der Schleifscheibe 3 kreisfรถrmig konzentrisch zur Drehachse D ausgebildet, wobei die Durchmesser der zentralen Durchbrรผche 7, ausgehend von der Vorderseite 4 hin zur Rรผckseite 5, grรถรŸer werden. Die Durchbrรผche 7 bilden somit eine zentrale Ausnehmung 10 im Schleifrondenpaket 2.The central openings 7 of the grinding blanks 6 are circular in the first embodiment of the grinding wheel 3 concentric with the axis of rotation D, wherein the diameter of the central openings 7, starting from the front side 4 towards the back 5, are larger. The openings 7 thus form a central recess 10 in the Schleifrondenpaket second

In der Ausnehmung 10 des Schleifrondenpakets 2 ist der Trรคgerteller 1 angeordnet, an dem die Schleifronden 6 und die Abschlussronde 8 befestigt sind. In der gezeigten Ausfรผhrungsform ist der Trรคgerteller 1 in die Ausnehmung 10 eingegossen. Hierbei kann, wie in Figur 4 dargestellt, vorher in die Ausnehmung 10 eine Gewindemutter 15 eingelegt sein, mit der die Schleifscheibe 3 an einem Antriebswerkzeug befestigbar ist. Der Raum um die Gewindemutter 15 und innerhalb der Ringscheiben kann nun mit einem hรคrtenden Material (Kunstharz, Epoxidharz, Phenolharz Polyurethan oder jedem anderen dem Fachmann bekannten Klebe- oder Kittsystem), welches die Schleifronden 6 und Gewindemutter 15 nach dem Aushรคrten zusammenhรคlt, ausgegossen werden. Alternativ zur Gewindemutter 15 kรถnnen auch andere Gewindeelemente oder Hรผlsen verwendet werden. Voraussetzung ist immer die Montierbarkeit auf eine Antriebsmaschine. Im bevorzugten Fall eines Winkelschleifers hat die Gewindemutter 15 den Vorteil der schnellen Aufschraubbarkeit auf den Winkelschleifer. Eine gewรถhnliche Sechskantmutter ist bereits ausreichend, um Stabilitรคt der Verankerung im Kitt- bzw. Harzsystem zu verbessern. Es sind aber auch andere Geometrien, insbesondere mit erhรถhter Oberflรคche (aufgeraut, "Flรผgel", "Krempe" etc.) denkbar. Das Material des Gewindeelements kann Metall, bevorzugt rostfreies Metall, aber auch Kunststoff sein. Selbstverstรคndlich ist auch eine Kombination aus Metallgewinde, eingebettet in einen Kunststoffring etc. denkbar.In the recess 10 of the Schleifrondenpakets 2 of the carrier plate 1 is arranged, on which the Schleifronden 6 and the end blank 8 are attached. In the embodiment shown, the carrier plate 1 is cast into the recess 10. Here, as in FIG. 4 shown, previously be inserted into the recess 10, a threaded nut 15 with which the grinding wheel 3 can be attached to a drive tool. The space around the threaded nut 15 and within the washers may now be filled with a hardening material (synthetic resin, epoxy resin, phenolic polyurethane or any other known in the art adhesive or Kittsystem), which holds the grinding blanks 6 and nut 15 after curing together. As an alternative to the threaded nut 15, other threaded elements or sleeves can be used. The prerequisite is always the ability to mount on a drive machine. In the preferred case of an angle grinder, the threaded nut 15 has the advantage of being quickly screwed onto the angle grinder. An ordinary hexagon nut is already sufficient to improve the stability of the anchoring in the putty or resin system. But there are also other geometries, especially with increased surface (roughened, "wings", "brim", etc.) conceivable. The material of the threaded element may be metal, preferably stainless metal, but also plastic. Of course, a combination of metal thread, embedded in a plastic ring, etc. is conceivable.

In der Ausfรผhrungsform gemรครŸ der Figuren 1 bis 4 weist der Trรคgerteller 1 zum Befestigen an einer Antriebsmaschine einen zentralen Durchbruch 14 auf.In the embodiment according to the FIGS. 1 to 4 For example, the carrier plate 1 has a central aperture 14 for attachment to a prime mover.

Die Ausnehmung 10 und der Trรคgerteller 1 sind somit im Wesentlichen konusfรถrmig gestaltet, wobei der Konuswinkel sich zur Rรผckseite 5 hin รถffnet.The recess 10 and the carrier plate 1 are thus designed substantially cone-shaped, wherein the cone angle opens to the back 5 out.

Die Durchmesser der Durchbrรผche 7 der einzelnen Schleifronden 6 sind zudem derart gestuft, dass sich zur Rรผckseite 5 hin weisende offenliegende Ringabschnitte 11 bilden, mit denen die einzelnen Schleifronden 6 in Anlage zu stufenfรถrmig ausgebildeten Befestigungsflรคchen 12 des Trรคgertellers 1 angeordnet sind und an diesem befestigt sind. Somit ist gewรคhrleistet, dass eine mรถglichst groรŸe Flรคche der einzelnen Schleifronden 6 in Anlage zu dem Trรคgerteller 1 sind. Ebenso weist die Abschlussronde 8 einen sich zur Rรผckseite 5 hin weisenden offenliegenden Ringabschnitt 23 auf, mit dem die Abschlussronde 8 in Anlage mit einer Befestigungsflรคche 24 des Trรคgertellers 1 angeordnet ist und an diesem befestigt ist.The diameter of the apertures 7 of the individual sanding discs 6 are also stepped such that the back 5 facing open exposed ring sections 11, with which the individual sanding disks 6 are arranged in abutment to step-shaped mounting surfaces 12 of the support plate 1 and secured thereto. This ensures that the largest possible area of the individual grinding blanks 6 are in contact with the carrier plate 1. Likewise, the Abschlussronde 8 a pointing towards the back 5 facing open ring portion 23, with which the final blank 8 is arranged in contact with a mounting surface 24 of the support plate 1 and is fixed thereto.

Die einzelnen Schleifronden 6 weisen jeweils eine kreisfรถrmige AuรŸenumfangsflรคche 13 auf. Die AuรŸenumfangsflรคchen 13 aller Schleifronden 6 und der Abschlussronde 8 weisen denselben Durchmesser auf, so dass sich insgesamt eine kreiszylindrische AuรŸenflรคche des Schleifrondenpakets 2 mit der Schleifscheibe 3 ergibt.The individual grinding blanks 6 each have a circular outer circumferential surface 13. The outer peripheral surfaces 13 of all the abrasive blanks 6 and the end blade 8 have the same diameter, so that the overall result is a circular-cylindrical outer surface of the abrasive blotter package 2 with the grinding wheel 3.

Die Ausnehmung 10 ist im wesentlichen kegelstumpffรถrmig abgestuft gestaltet, wobei das Material, das zur Herstellung des Trรคgertellers 1 in die Ausnehmung 10 eingegossen wird, beim Einfรผllen nicht oder nur im geringen Umfang zwischen die Schleifronden 6 flieรŸt. Idealerweise betrรคgt der Kegelwinkel einer den Trรคgerteller 10 umhรผllenden Mantelflรคche etwa 160 bis 170 Grad, vorzugsweise etwa 164 Grad. Hierdurch wird ermรถglicht, dass der Werker die Schleifscheibe 3 in unterschiedlichen Winkeln an die Oberflรคche des zu bearbeitenden Werkstรผcks ansetzen kann. Dabei lรคsst sich das Schleifrondenpaket 2 weitestgehend vollstรคndig abarbeiten, bis der Trรคgerteller 1 auf das Werkstรผck trifft.The recess 10 is designed stepped substantially frusto-conical, wherein the material which is poured into the recess 10 for the preparation of the carrier plate 1, when filling is not or only to a small extent between the grinding blasters 6 flows. Ideally, the cone angle of a lateral surface enveloping the carrier plate 10 is about 160 to 170 degrees, preferably about 164 degrees. This makes it possible that the worker can set the grinding wheel 3 at different angles to the surface of the workpiece to be machined. In this case, the Schleifrondenpaket 2 can largely work off completely until the carrier plate 1 hits the workpiece.

Figur 5 zeigt eine zweite Ausfรผhrungsform eines Schleifrondenpakets 2 einer Schleifscheibe 3. Die Durchbrรผche 7 der Schleifronden 6 sind bei dieser Ausfรผhrungsform im Querschnitt nicht kreisfรถrmig, sondern weichen von einer Kreisform ab. Sie sind in Form eines sechseckigen Polygons ausgebildet. Der Trรคgerteller (hier nicht dargestellt) ist entsprechend gestaltet, so dass eine erhรถhte Drehsicherheit des Schleifrondenpakets 2 gegenรผber dem Trรคgerteller gewรคhrleistet ist. FIG. 5 shows a second embodiment of a Schleifrondenpakets 2 a grinding wheel 3. The openings 7 of the grinding blanks 6 are not circular in cross-section in this embodiment, but deviate from a circular shape. They are in the form of a hexagonal polygon. The carrier plate (not shown here) is designed accordingly, so that an increased rotational security of the Schleifrondenpakets 2 is ensured relative to the carrier plate.

Figur 6 zeigt eine dritte Ausfรผhrungsform eines Schleifrondenpakets 2, wobei zur Erhรถhung der Drehsicherheit des Schleifrondenpakets 2 gegenรผber dem Trรคgerteller 1 (hier nicht dargestellt) in die einzelnen Schleifronden 6 radial verlaufende Ausnehmungen 17 vorgesehen sind, wobei die zur Rรผckseite 5 nรคchstliegende Schleifronde 6 anstatt der Ausnehmungen 17 radial verlaufende Stege 18 aufweist. FIG. 6 shows a third embodiment of a Schleifrondenpakets 2, wherein for increasing the rotational security of the Schleifrondenpakets 2 with respect to the support plate. 1 (Not shown here) 6 radially extending recesses 17 are provided in the individual grinding blanks, wherein the closest to the back 5 Schleifronde 6 instead of the recesses 17 radially extending webs 18 has.

Figur 7 zeigt die Draufsicht auf eine Vorderseite 4 einer zweiten Ausfรผhrungsform einer Schleifscheibe 3, wobei die AuรŸenumfangsflรคchen 13 der Schleifronden 6 eine von einem Kreis abweichende Kontur aufweisen. In die AuรŸenumfangsflรคchen 13 der Schleifronden 6 sind radial nach innen verlaufende Sichtausnehmungen 19 vorgesehen, die bei drehend angetriebener Schleifscheibe 3 einen Blick auf das Schleifergebnis ermรถglichen. FIG. 7 shows the top view of a front side 4 of a second embodiment of a grinding wheel 3, wherein the outer peripheral surfaces 13 of the grinding blanks 6 have a deviating from a circle contour. In the outer peripheral surfaces 13 of the Schleifronden 6 radially inwardly extending viewing recesses 19 are provided, which allow a view of the grinding result with rotating driven grinding wheel 3.

Figuren 8 und 9 zeigen eine dritte Ausfรผhrungsform einer Schleifscheibe 3, wobei die AuรŸenumfangsflรคchen 13 der Schleifronden 6 und der Abschlussronde 8, wie zuvor in Bezug auf die Figuren 1 bis 6 beschrieben, eine kreiszylindrische AuรŸenumfangsflรคche 20 bilden. Zusรคtzlich zu den Schleifronden 6 und der Abschlussronde 8 weist die Schleifscheibe 3 eine Stรผtzschicht 21 aus einem Glasfasergewebe mit Phenolharz auf. Die Stรผtzschicht 21 weist ebenfalls einen Durchbruch 22, der zusammen mit den weiteren Durchbrรผchen 7, 9 der Schleifronden 6 und der Abschlussronde 8 die zentrale Ausnehmung 10 bildet. Der Trรคgerteller 1 ist in die Ausnehmung 10 eingegossen, sodass auch die scheibenfรถrmige Stรผtzschicht 21 am Trรคgerteller 1 befestigt ist. Die Durchbrรผche 7 der Schleifronden 6 werden ausgehend von der Vorderseite 4 hin zur Rรผckseite 5 grรถรŸer, wobei der Durchbruch 22 der Stรผtzschicht 21 kleiner als der Durchbruch 7 der benachbarten Schleifronde 6 ist. Zudem weist die Stรผtzschicht 21 einen kleineren AuรŸendurchmesser als die Schleifronden 6 auf. FIGS. 8 and 9 show a third embodiment of a grinding wheel 3, wherein the outer peripheral surfaces 13 of the grinding blanks 6 and the end blank 8, as previously with respect to the FIGS. 1 to 6 described, form a circular cylindrical outer peripheral surface 20. In addition to the grinding blanks 6 and the end blank 8, the grinding wheel 3 has a supporting layer 21 of a glass fiber fabric with phenolic resin. The support layer 21 likewise has an opening 22 which, together with the further openings 7, 9 of the grinding blanks 6 and the end blank 8, forms the central recess 10. The carrier plate 1 is cast into the recess 10, so that the disk-shaped support layer 21 is fixed to the carrier plate 1. The apertures 7 of the grinding blanks 6 are larger, starting from the front side 4 towards the back 5, wherein the opening 22 of the support layer 21 is smaller than the opening 7 of the adjacent Schleifronde 6. In addition, the support layer 21 has a smaller outer diameter than the Schleifronden 6.

Im Laufe der Anwendung der Schleifscheibe 3 und dem damit verbundenen zunehmenden VerschleiรŸ der Schleifronden 6 kann es unter Umstรคnden zu einem langsamen Umbiegen oder Umklappen der untersten oder sogar unteren Lagen der Schleifronden 6 kommen. Dies kann durch die Verstรคrkung in Form der Stรผtzschicht 21 zur axialen Abstรผtzung des Schleifrondenpakets 2 verhindert werden.In the course of the application of the grinding wheel 3 and the associated increased wear of the grinding blanks 6, it may sometimes come to a slow bending or folding over the lowermost or even lower layers of the grinding blanks 6. This can be prevented by the reinforcement in the form of the support layer 21 for the axial support of the Schleifrondenpakets 2.

In einer besonderen Ausfรผhrung wird die Ausnehmung 10 des Schleifrondenpakets 2 nicht nur mit aushรคrtbarem Material eben aufgefรผllt, sondern auch noch die letzte Lage der Schleifronden 6 rรผckseitig mit aushรคrtbarem Material bestrichen. Hierdurch wird die letzte Schleifronde 6 auf der Rรผckseite zusรคtzlich an den Trรคgerteller 1 gebunden und gleichzeitig gegen Umklappen verstรคrkt. Alternativ kann die letzte Schleifronden 6 auch durch eine Fiberscheibe oder einer Scheibe aus einem anderen hรคrteren Material ersetzt sein, welches fester ist als die darรผber liegenden Schleifronden 6.In a particular embodiment, the recess 10 of the Schleifrondenpakets 2 is not just filled with hardenable material, but also the last layer of Schleifronden 6 coated back with curable material. This will the last Schleifronde 6 on the back additionally bound to the support plate 1 and simultaneously reinforced against folding. Alternatively, the last sanding blanks 6 may also be replaced by a fiber disk or a disk of another harder material, which is stronger than the overlying sanding blanks 6.

In Figur 10 ist eine vierte Ausfรผhrungsform eines Schleifrondenpakets 2 in Seitenansicht dargestellt. Die einzelnen Schleifronden 6 weisen jeweils eine kreisfรถrmige AuรŸenumfangsflรคche 13 auf, wobei die AuรŸenumfangsflรคchen 13 derart in Form und GrรถรŸe gestaltet sind, dass diese eine konusfรถrmige AuรŸenumfangsmantelflรคche 20 des Schleifrondenpakets 2 bilden. Die AuรŸenumfangsflรคchen 13 der Schleifronden 6 sind mit Blick auf die Seitenansicht unter Bildung eines Winkels ฮฑ zur Drehachse angeordnet. Der Winkel ฮฑ kann zwischen 5ยฐ und 85ยฐ, insbesondere zwischen 20ยฐ und 40ยฐ betragen und ist hier lediglich beispielhaft mit etwa 30ยฐ gezeigt. Der optimale Winkel ฮฑ resultiert allerdings aus der Schleifaufgabe, fรผr die die Schleifscheibe 3 eingesetzt werden soll.In FIG. 10 a fourth embodiment of a Schleifrondenpakets 2 is shown in side view. The individual grinding blanks 6 each have a circular outer peripheral surface 13, wherein the outer peripheral surfaces 13 are designed in such a form and size that they form a cone-shaped outer circumferential surface area 20 of the Schleifrondenpakets 2. The outer peripheral surfaces 13 of the grinding blanks 6 are arranged with respect to the side view forming an angle ฮฑ to the axis of rotation. The angle ฮฑ can be between 5 ยฐ and 85 ยฐ, in particular between 20 ยฐ and 40 ยฐ, and is shown here only by way of example with about 30 ยฐ. However, the optimum angle ฮฑ results from the grinding task for which the grinding wheel 3 is to be used.

Figur 11 zeigt die Draufsicht auf eine Vorderseite 4 einer vierten Ausfรผhrungsform einer Schleifscheibe 3, wobei die AuรŸenumfangsflรคchen 13 der einzelnen Schleifronden 6 und der beiden Abschlussronden 8 jeweils eine kreisfรถrmige AuรŸenumfangsflรคche 13 aufweisen. Die AuรŸenumfangsflรคchen 13 aller Schleifronden 6 und Abschlussronden 8 weisen denselben AuรŸendurchmesser auf, so dass sich insgesamt eine kreiszylindrische AuรŸenflรคche des Schleifrondenpakets 2 ergibt. In Figur 12 ist die Schleifscheibe 3 gemรครŸ der vierten Ausfรผhrungsform in Schnittansicht gezeigt. Erkennbar ist, dass die Durchbrรผche 7 der Schleifronden 6 im Unterschied zu den vorgenannten Ausfรผhrungsformen nicht ausgehend von der Vorderseite 4 hin zur Rรผckseite 5 kontinuierlich grรถรŸer werden. Stattdessen sind die zentralen Durchbrรผche 7 der in Figur 12 gezeigten Schleifronden 6 und Abschlussronden 8 zumindest teilweise unterschiedlich groรŸ ausgebildet. Konkret sind die zentralen Durchbrรผche 7, 9 des Schleifrondenpakets 2 zumindest entlang eines sich parallel zur Drehachse D erstreckenden Lรคngsabschnitts, der sich ausgehend von der Vorderseite 4 hin zur Mitte erstreckt, grรถรŸer werdend ausgebildet, wobei der Durchbruch 7 der mittleren Schleifronde 6 am grรถรŸten ist. Weitergehend sind die zentralen Durchbrรผche 7, 9 des Schleifrondenpakets 2 entlang eines sich anschlieรŸenden und parallel zur Drehachse D erstreckenden weiteren Lรคngsabschnitts, der sich ausgehend von der Mitte hin zur Rรผckseite 5 erstreckt, kleiner werdend ausgebildet. Der Durchbruch 9 der beiden Abschlussronden 8 ist identisch ausgebildet und kleiner als die Durchbrรผche 7 der Schleifronden 6. Beginnend an der Vorderseite 4 entsprechen sich zudem von den hier fรผnf zwischen den Abschlussronden 8 liegenden Schleifronden 6 der Schleifscheibe 3 die erste und die fรผnfte sowie die zweite und die dritte Schleifronde 6 in Form und GrรถรŸe. FIG. 11 shows the top view of a front side 4 of a fourth embodiment of a grinding wheel 3, wherein the outer peripheral surfaces 13 of the individual grinding blanks 6 and the two end blanks 8 each have a circular outer peripheral surface 13. The outer circumferential surfaces 13 of all the abrasive blanks 6 and end blanks 8 have the same outer diameter, so that the overall result is a circular cylindrical outer surface of the abrasive blister package 2. In FIG. 12 the grinding wheel 3 according to the fourth embodiment is shown in sectional view. It can be seen that the apertures 7 of the grinding blanks 6, in contrast to the aforementioned embodiments, do not increase continuously starting from the front side 4 towards the rear side 5. Instead, the central breakthroughs 7 are the in FIG. 12 shown Schleifronden 6 and end blanks 8 at least partially formed differently large. Specifically, the central apertures 7, 9 of the Schleifrondenpakets 2 at least along a parallel to the rotation axis D extending longitudinal portion extending from the front side 4 toward the center, formed larger, with the opening 7 of the middle Schleifronde 6 is greatest. Further, the central openings 7, 9 of the Schleifrondenpakets 2 along a subsequent and parallel to the rotation axis D extending further Longitudinal section, which extends from the center to the back 5, formed smaller. The opening 9 of the two end blanks 8 is formed identically and smaller than the openings 7 of the grinding blanks 6. Starting at the front 4 also correspond to the five here between the final blanks 8 grinding blanks 6 of the grinding wheel 3, the first and the fifth and the second and the third Schleifronde 6 in shape and size.

Die Durchmesser der Durchbrรผche 7, 9 der einzelnen Schleifronden 6 und der an der Vorderseite 4 angeordneten Abschlussronde 8 in einem Lรคngsabschnitt, der sich ausgehend von der Vorderseite 4 hin zur Mitte erstreckt, sind derart gestuft, dass sich die zur Rรผckseite 5 hin weisenden offenliegenden Ringabschnitte 11, 23 bilden, mit denen diese Schleifronden 6 und die vorderseitige Abschlussronde 8 in Anlage zu stufenfรถrmig ausgebildeten Befestigungsflรคchen 12, 24 des Trรคgertellers 1 angeordnet sind und an diesem befestigt sind. Die Durchmesser der Durchbrรผche 7, 9 der weiteren einzelnen Schleifronden 6 und der an der Rรผckseite 5 angeordneten Abschlussronde 8 in einem weiteren Lรคngsabschnitt, der sich ausgehend von der Mitte des Schleifrondenpaketes 2 zur Rรผckseite 5 erstreckt, sind derart gestuft, dass sich die zur Vorderseite 4 hin weisenden offenliegenden Ringabschnitte 11, 23 bilden, mit denen diese Schleifronden 6 und die rรผckseitige Abschlussronde 8 in Anlage zu stufenfรถrmig ausgebildeten Befestigungsflรคchen 12, 24 des Trรคgertellers 1 angeordnet sind und an diesem befestigt sind. Somit ist gewรคhrleistet, dass eine mรถglichst groรŸe Flรคche der einzelnen Schleifronden 6 und der Abschlussronden 8 in Anlage zu dem Trรคgerteller 1 sind.The diameters of the apertures 7, 9 of the individual abrasive blanks 6 and the front end 4 arranged on the end 8 in a longitudinal section extending from the front side 4 toward the center, are stepped such that facing the back 5 facing open ring sections 11, 23 form, with which these Schleifronden 6 and the front-side Abschlussronde 8 are arranged in abutment with step-shaped attachment surfaces 12, 24 of the support plate 1 and are attached thereto. The diameter of the apertures 7, 9 of the other individual abrasive blanks 6 and arranged on the back 5 end 8 in a further longitudinal section extending from the center of the Schleifrondenpaketes 2 to the back 5, are stepped such that the front to the fourth open facing ring sections 11, 23 form, with which these Schleifronden 6 and 8 on the back Abschlussronde are arranged in abutment with step-shaped attachment surfaces 12, 24 of the support plate 1 and secured thereto. This ensures that the largest possible area of the individual grinding blanks 6 and the end blanks 8 are in contact with the carrier plate 1.

In einer weiteren Ausfรผhrung kann die letzte oder die letzte und weitere, direkt davor befindliche Lagen von Schleifronden 6 auch mit der Kornseite entgegengesetzt der anderen Lagen eingelegt und vergossen werden. In diesem Fall kann der Anwender die Schleifscheibe 3 beidseitig verwenden und/oder auch wenden. Dies kann von Vorteil sein, wenn die Lagen unterschiedlich sind, zum Beispiel unterschiedliche Kรถrnungen enthalten. Es kann aber auch bei identischem Schleifronden 6 von Vorteil sein, da die Flexibilitรคt der Schleifronden 6 in Kornrichtung in der Regel deutlich geringer ist. Dadurch stabilisieren sich die beiden Schleifbeschichtungen benachbarter in Anlage zueinander befindlicher Schleifronden 6 gegenseitig und die Schleifscheibe 3 wird steifer.In a further embodiment, the last or the last and further layers of abrasive blanks 6 located directly in front of it can also be inserted and cast with the grain side opposite to the other layers. In this case, the user can use the grinding wheel 3 on both sides and / or also to turn. This can be advantageous if the layers are different, for example, contain different grain sizes. However, it may also be advantageous for identical abrasive blanks 6, since the flexibility of the abrasive blanks 6 in the grain direction is generally much lower. As a result, the two abrasive coatings of adjacent abrading blanks 6 mutually stabilize each other and the grinding wheel 3 becomes stiffer.

Letztlich kann in einer weiteren besonderen Ausfรผhrung auch vรถllig auf das GieรŸen des Trรคgertellers 1 verzichtet werden. In diesem Fall kann ein Trรคgerteller, zum Beispiel ein kegelstumpffรถrmiger Teller aus ABS-Kunststoff oder anderem Material, welches รผblicherweise fรผr Stรผtzteller fรผr Schleifrondenteller (Fรคcherschleifscheiben) eingesetzt wird, verwendet werden. Auf diesem werden dann mit einem Kittsystem die Schleifronden 6 befestigt.Finally, in a further particular embodiment, the casting of the carrier plate 1 can be completely dispensed with. In this case, a carrier plate, for example a frusto-conical plate made of ABS plastic or other material, which is usually used for backing pad for Schleifrondenteller (flap discs) can be used. On this then the Schleifronden 6 are attached with a Kittsystem.

Die Schleifronden 6 bestehen aus Schleifmittel auf Unterlage. Die darin verwendete Unterlage kann ein Gewebe, Gelege oder Vlies (auch verpresst) sein. Es kommt die ganze Bandbreite der gรคngigen Unterlagen fรผr Schleifmittel auf Unterlage in Frage, auch Kombinationen, wie z.B. Papier-Gewebe oder andere auf dem Markt bekannten Materialkombinationen oder (schwache) Vulkanfiber, die sich beim Anwenden abbaut, um einen kontinuierlichen VerschleiรŸ des Trรคgers sicherzustellen.The Schleifronden 6 consist of abrasive on pad. The pad used therein may be a fabric, scrim or nonwoven (also pressed). There is the whole range of common substrates for coated abrasive, even combinations, such as. Paper webs or other material combinations or (weak) vulcanized fiber known on the market which degrades upon application to ensure continued wear of the wearer.

In einer bevorzugten Ausfรผhrung ist die Unterlage und/oder die fertigen Schleifronden 6 und/oder die Abschlussronden 8 mรถglichst spannungsisotrop. Somit baut sich die Unterlage, bzw. die Schleifronden 6, bzw. die Abschlussronden 8 mรถglichst gleichmรครŸig, d.h. kreisfรถrmig ab. Zugfestigkeiten in Kett- und Schussrichtung bzw. auch in der Diagonalen sollten mรถglichst identisch sein. Beispiele sind zum Beispiel Schleifmittel auf Unterlage und Unterlagen dafรผr, wie Sie bei segmentierten Breitbรคndern verwendet werden. Das Schleifleinen und das Schleifmittel auf Unterlage sollten grundsรคtzlich relativ hohe Zugfestigkeiten aufweisen.In a preferred embodiment, the base and / or the finished sanding blanks 6 and / or the end blanks 8 are as far as possible anisotropic. Thus, the pad, or the Schleifronden 6, or the end blanks 8 builds as evenly as possible, i. circular. Tensile strengths in the warp and weft directions or also in the diagonal should be as identical as possible. Examples are, for example, coated abrasives and documents as used in segmented broad bands. The abrasive cloth and the coated abrasive should generally have relatively high tensile strengths.

In einer besonderen Ausfรผhrung werden Schleifmittel auf Unterlage mit hoher EinreiรŸfestigkeit in mรถglichst allen Richtungen (lรคngs, quer und diagonal) verwendet. In einer bevorzugten Ausfรผhrung ist das verwendete Gewebe des Schleifmittels auf Unterlage ein X oder Y-Trรคger.In a particular embodiment, coated abrasives having high tear strength are used in as many directions as possible (longitudinal, transverse and diagonal). In a preferred embodiment, the fabric of the coated abrasive used is an X or Y backing.

In einer bevorzugten Ausfรผhrung handelt es sich beim Schleifkorn um Keramikkorn oder Mischungen davon mit Zirkonkorund und/oder Korund.In a preferred embodiment, the abrasive grain is ceramic grain or mixtures thereof with zirconia corundum and / or corundum.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Trรคgertellercarrier plate
22
SchleifrondenpaketGrinding Ronde package
33
Schleifscheibegrinding wheel
44
Vorderseitefront
55
Rรผckseiteback
66
Schleifrondegrinding Ronde
77
Durchbruchbreakthrough
88th
AbschlussrondeStatements Ronde
99
Durchbruchbreakthrough
1010
Ausnehmungrecess
1111
Ringabschnittring section
1212
Befestigungsflรคchemounting surface
1313
AuรŸenumfangsflรคcheOuter circumferential surface
1414
Durchbruchbreakthrough
1515
Gewindemutterthreaded nut
1616
Innengewindeinner thread
1717
Ausnehmungrecess
1818
Stegweb
1919
SichtausnehmungSichtausnehmung
2020
AuรŸenumfangsmantelflรคcheOuter circumferential surface
2121
Stรผtzschichtbacking
2222
Durchbruchbreakthrough
2323
Ringabschnittring section
2424
Befestigungsflรคchemounting surface
DD
Drehachseaxis of rotation
ฮฑฮฑ
Winkelangle

Claims (15)

Schleifscheibe (3), die um eine Drehachse (D) drehend antreibbar ist und eine Vorderseite (4) sowie eine von der Vorderseite (4) abgewandte Rรผckseite (5) aufweist, wobei die Schleifscheibe (3) weiterhin Folgendes aufweist: ein mehrlagiges Schleifrondenpaket (2) mit einer Mehrzahl von Schleifronden (6), die entlang der Drehachse (D) flรคchig รผbereinander gestapelt sind und die jeweils einen zentralen Durchbruch (7) aufweisen, wobei die zentralen Durchbrรผche (7) gemeinsam eine Ausnehmung (10) des Schleifrondenpakets (2) bilden, dadurch gekennzeichnet, dass die Schleifscheibe (3) einen Trรคgerteller (1) aufweist, der in der Ausnehmung (10) angeordnet ist, und dass die Schleifronden (6) jeweils einzeln an dem Trรคgerteller (1) befestigt sind. Grinding wheel (3) which is rotatably drivable about a rotation axis (D) and has a front side (4) and a rear side (5) facing away from the front side (4), wherein the grinding wheel (3) further comprises a multilayer sanding disk package (2) with a plurality of sanding disks (6) which are stacked flat over the axis of rotation (D) and which each have a central opening (7), wherein the central openings (7) together form a recess (10) form the Schleifrondenpakets (2), characterized, that the grinding wheel (3) has a carrier plate (1) which is arranged in the recess (10), and that the grinding discs (6) in each case individually on the carrier plate (1) are attached. Schleifscheibe (3) nach Anspruch 1,
dadurch gekennzeichnet,
dass die zentralen Durchbrรผche (7) von zumindest einer Teilmenge der Schleifronden (6) des Schleifrondenpaktes (2) unterschiedlich groรŸ ausgebildet sind.
Grinding wheel (3) according to claim 1,
characterized,
that the central apertures (7) of at least a subset of the grinding discs (6) of the grinding Ronde Pact (2) are formed of different size.
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass die zentralen Durchbrรผche (7, 9) der Schleifronden (6) zumindest entlang eines sich parallel zur Drehachse (D) erstreckenden Abschnitts des Schleifrondenpakets (2) ausgehend von der Vorderseite (4) hin zur Rรผckseite (5) grรถรŸer werdend ausgebildet sind.
Grinding wheel (3) according to one of the preceding claims,
characterized,
in that the central apertures (7, 9) of the grinding blanks (6) are made larger starting at the front side (4) towards the rear side (5) at least along a section of the abrasive blotter packet (2) extending parallel to the axis of rotation (D).
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass die zentralen Durchbrรผche (7, 9) der Schleifronden (6) zumindest entlang eines sich parallel zur Drehachse (D) erstreckenden Abschnitts des Schleifrondenpakets (2) ausgehend von der Rรผckseite (5) hin zur Vorderseite (4) grรถรŸer werdend ausgebildet sind.
Grinding wheel (3) according to one of the preceding claims,
characterized,
in that the central apertures (7, 9) of the grinding blanks (6) are made larger starting at the rear side (5) towards the front side (4) at least along a section of the abrasive blotter packet (2) extending parallel to the axis of rotation (D).
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass die einzelnen Schleifronden (6) jeweils mit einem zentralen Ringabschnitt (11) an einer parallel zur Vorderseite (4) angeordneten Befestigungsflรคche (12) des Trรคgertellers (1) mit diesem verbunden sind.
Grinding wheel (3) according to one of the preceding claims,
characterized,
that the individual abrasive discs (6) arranged in each case with a central ring portion (11) at a parallel to the front (4) mounting surface (12) of the carrier plate (1) are connected thereto.
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass der Trรคgerteller (1) in die Ausnehmung (10) eingegossen ist.
Grinding wheel (3) according to one of the preceding claims,
characterized,
that the carrier plate (1) is poured into the recess (10).
Schleifscheibe (3) nach Anspruch 6,
dadurch gekennzeichnet,
dass ein Gewindeelement (15) mit einem Innengewinde (16) zum Befestigen der Schleifscheibe (3) an einer Antriebsmaschine in dem Trรคgerteller (1) angeordnet, insbesondere in den Trรคgerteller (1) eingegossen, ist.
Grinding wheel (3) according to claim 6,
characterized,
in that a threaded element (15) with an internal thread (16) for fastening the grinding wheel (3) to a drive machine is arranged in the carrier plate (1), in particular cast into the carrier plate (1).
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass die Durchbrรผche (7) der Schleifronde (6) einen von einem Kreis abweichenden Querschnitt aufweisen, insbesondere einen polygonfรถrmigen Querschnitt aufweisen.
Grinding wheel (3) according to one of the preceding claims,
characterized,
that the apertures (7) of the grinding Ronde (6) have a deviating from a circular cross-section, in particular having a polygonal cross-section.
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass die Schleifronden (6) jeweils eine AuรŸenumfangsflรคche (13) aufweisen, wobei die AuรŸenumfangsflรคchen (13) aller Schleifronden (6) in Form, GrรถรŸe und Ausrichtung identisch sind.
Grinding wheel (3) according to one of the preceding claims,
characterized,
in that the grinding blanks (6) each have an outer circumferential surface (13), the outer peripheral surfaces (13) of all the grinding blanks (6) being identical in shape, size and orientation.
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass die Schleifronden (6) jeweils eine AuรŸenumfangsflรคche (13) aufweisen, wobei die AuรŸenumfangsflรคchen (13) im Querschnitt der Schleifscheibe (3) betrachtet jeweils unter Bildung eines Winkels (ฮฑ) zwischen 5ยฐ und 85ยฐ, insbesondere zwischen 20ยฐ und 40ยฐ zur Drehachse (D) angeordnet sind.
Grinding wheel (3) according to one of the preceding claims,
characterized,
in that the grinding blanks (6) each have an outer peripheral surface (13), wherein the outer peripheral surfaces (13) in the cross-section of the grinding wheel (3) each form an angle (ฮฑ) between 5 ยฐ and 85 ยฐ, in particular between 20 ยฐ and 40 ยฐ are arranged to the rotation axis (D).
Schleifscheibe (3) nach Anspruch 9 oder 10,
dadurch gekennzeichnet,
dass die AuรŸenumfangsflรคchen (13) radiale Ausnehmungen (19) aufweisen.
Grinding wheel (3) according to claim 9 or 10,
characterized,
that the outer peripheral surfaces (13) have radial recesses (19).
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass die Schleifscheibe (3) an der Rรผckseite (5) eine Stรผtzschicht (21) aufweist.
Grinding wheel (3) according to one of the preceding claims,
characterized,
that the grinding wheel (3) on the back (5) comprises a support layer (21).
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass zumindest eine Teilmenge der Schleifronden (6) jeweils an einer zur Vorderseite (4) der Schleifscheibe (3) weisenden Seite eine Schleifschicht aufweisen.
Grinding wheel (3) according to one of the preceding claims,
characterized,
in that at least a subset of the abrasive blanks (6) each have an abrasive layer on a side facing the front side (4) of the abrasive wheel (3).
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass zumindest eine Teilmenge der Schleifronden (6) jeweils an einer zur Rรผckseite (5) der Schleifscheibe (3) weisenden Seite eine Schleifschicht aufweisen.
Grinding wheel (3) according to one of the preceding claims,
characterized,
in that at least a subset of the abrasive blanks (6) each have an abrasive layer on a side facing the rear side (5) of the abrasive wheel (3).
Schleifscheibe (3) nach einem der vorangehenden Ansprรผche,
dadurch gekennzeichnet,
dass zumindest eine der Schleifronden (6) eine Mehrzahl an Schleifrondensegmenten aufweist, die in Umfangsrichtung verteilt stumpf aneinanderstoรŸen.
Grinding wheel (3) according to one of the preceding claims,
characterized,
in that at least one of the abrasive blanks (6) has a plurality of abrasive bladder segments that abut against one another in the circumferential direction.
EP15176163.2A 2015-07-09 2015-07-09 Grinding disc Active EP3015222B1 (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
PL15176163T PL3015222T3 (en) 2015-07-09 2015-07-09 Grinding disc
SI201530140T SI3015222T1 (en) 2015-07-09 2015-07-09 Grinding disc
EP15176163.2A EP3015222B1 (en) 2015-07-09 2015-07-09 Grinding disc
ES15176163.2T ES2653813T3 (en) 2015-07-09 2015-07-09 Grinding wheel
CA2992056A CA2992056C (en) 2015-07-09 2016-06-29 Grinding disc
BR112018000050-7A BR112018000050B1 (en) 2015-07-09 2016-06-29 ABRASIVE DISC
PCT/EP2016/065107 WO2017005569A1 (en) 2015-07-09 2016-06-29 Abrasive wheel
JP2018512250A JP6494866B2 (en) 2015-07-09 2016-06-29 Grinding wheel disc
CN201680040389.XA CN107848095B (en) 2015-07-09 2016-06-29 Abrasive disk
US15/742,715 US10500698B2 (en) 2015-07-09 2016-06-29 Grinding disc
UAA201712795A UA121498C2 (en) 2015-07-09 2016-06-29 Abrasive wheel
RU2018104814A RU2664842C1 (en) 2015-07-09 2016-06-29 Grinding wheel
SG11201800067VA SG11201800067VA (en) 2015-07-09 2016-06-29 Grinding disc
MX2018000272A MX2018000272A (en) 2015-07-09 2016-06-29 Abrasive wheel.
PH12018500072A PH12018500072A1 (en) 2015-07-09 2018-01-08 Grinding disc
CL2018000069A CL2018000069A1 (en) 2015-07-09 2018-01-09 Grinding disc
ZA2018/00503A ZA201800503B (en) 2015-07-09 2018-01-24 Abrasive wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15176163.2A EP3015222B1 (en) 2015-07-09 2015-07-09 Grinding disc

Publications (2)

Publication Number Publication Date
EP3015222A1 true EP3015222A1 (en) 2016-05-04
EP3015222B1 EP3015222B1 (en) 2017-10-25

Family

ID=53541553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15176163.2A Active EP3015222B1 (en) 2015-07-09 2015-07-09 Grinding disc

Country Status (17)

Country Link
US (1) US10500698B2 (en)
EP (1) EP3015222B1 (en)
JP (1) JP6494866B2 (en)
CN (1) CN107848095B (en)
BR (1) BR112018000050B1 (en)
CA (1) CA2992056C (en)
CL (1) CL2018000069A1 (en)
ES (1) ES2653813T3 (en)
MX (1) MX2018000272A (en)
PH (1) PH12018500072A1 (en)
PL (1) PL3015222T3 (en)
RU (1) RU2664842C1 (en)
SG (1) SG11201800067VA (en)
SI (1) SI3015222T1 (en)
UA (1) UA121498C2 (en)
WO (1) WO2017005569A1 (en)
ZA (1) ZA201800503B (en)

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Also Published As

Publication number Publication date
BR112018000050B1 (en) 2022-02-15
US20180193981A1 (en) 2018-07-12
SG11201800067VA (en) 2018-02-27
CN107848095A (en) 2018-03-27
RU2664842C1 (en) 2018-08-23
ES2653813T3 (en) 2018-02-08
ZA201800503B (en) 2019-04-24
CN107848095B (en) 2019-03-26
US10500698B2 (en) 2019-12-10
BR112018000050A2 (en) 2018-09-04
JP2018521871A (en) 2018-08-09
MX2018000272A (en) 2018-03-08
PL3015222T3 (en) 2018-04-30
WO2017005569A1 (en) 2017-01-12
CA2992056C (en) 2018-10-16
CA2992056A1 (en) 2017-01-12
JP6494866B2 (en) 2019-04-03
CL2018000069A1 (en) 2018-08-17
UA121498C2 (en) 2020-06-10
SI3015222T1 (en) 2018-04-30
EP3015222B1 (en) 2017-10-25
PH12018500072A1 (en) 2018-07-30

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