EP0458774B2 - Hartmetall- oder Keramikrohling sowie Verfahren und Werkzeug zur Herstellung derselben - Google Patents
Hartmetall- oder Keramikrohling sowie Verfahren und Werkzeug zur Herstellung derselben Download PDFInfo
- Publication number
- EP0458774B2 EP0458774B2 EP91890093A EP91890093A EP0458774B2 EP 0458774 B2 EP0458774 B2 EP 0458774B2 EP 91890093 A EP91890093 A EP 91890093A EP 91890093 A EP91890093 A EP 91890093A EP 0458774 B2 EP0458774 B2 EP 0458774B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- blank
- extrusion
- twisted
- tool
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 10
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 239000000919 ceramic Substances 0.000 title claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 238000001125 extrusion Methods 0.000 claims abstract description 39
- 230000000295 complement effect Effects 0.000 claims abstract 3
- 239000000463 material Substances 0.000 claims description 27
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 238000005245 sintering Methods 0.000 description 11
- 239000003921 oil Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/147—Making drill blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/004—Article comprising helical form elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Definitions
- the invention relates to a hard metal or ceramic blank for Drilling, milling or reaming tools with at least one internal helical rinsing channel running in the longitudinal direction.
- the invention further relates to a method for producing a such a blank, the hard metal or ceramic material extruded through a die of an extrusion die while doing so is turned helically and with each flushing channel in the blank a pin protruding into the nozzle is formed.
- the invention relates to an extrusion tool for Production of such a blank or for carrying out the mentioned procedure.
- a blank, a method and an extrusion die of specified type are from European patent application 223 909 known.
- the blank is in the nozzle twisted by helical grooves or ridges, whereby considerable shear forces, especially in the area of the groove or Bridge base, occur as well as cracks and loosening in the extruded Material can arise. Due to uneven compression at Sintering occurs at different local shrinkages, causing dimensional inaccuracies and the risk of breakage are increased. About that In addition, the grooves and webs provided only offer a bad one Dimensional accuracy or an inaccurate further movement or Twisting of the primary material, which reduces the effort involved in reworking or the committee is enlarged.
- a process for the production of drill end mills and other cutting tools has become known, which comprises the following steps: Heating with cooling of the iron powder layer in such a way that cavities occur in the iron powder layer or in the shank of the tool and tensions are dissipated.
- An extrusion tool for producing a drill blank with a helical flushing hole is known from DE-A1-38 14 687, the inner wall of the nozzle having a helical device and the raw material passing through the nozzle being twisted.
- the nozzle consists of several adjacent disks, which are designed so as to be rotatable relative to one another in order to change the helix pitch.
- the object of the invention is now to produce an extruded green or Manufacture blank, the high accuracy of dimensions after sintering possesses a homogeneous and high density, which creates the risk of breakage is reduced and which can usually be produced even with room temperature.
- the blank should have uniform shrinkage during sintering in order to to ensure dimensional accuracy.
- this task through a blank with the characteristics of Claim 1 solved Such a blank can be manufactured true to size and has the Sintering process an even shrinkage as a Material irregularity in the blank mass due to its almost entire circumferential surface acting rotational forces is prevented. Through the Forces acting on all sides result in a homogeneous compression.
- the Further processing of the blank is carried out in a simple manner, but only relatively Few protrusions can be removed because the edges of one regular convex polygons, only slightly the inscribed circle tower over the polygon.
- a procedure for the production of a blank according to claim 1 is in Claim 2 defined. It turned out that because of the achieved better rotatability of the extrusion processing Extrusion materials can usually be done at room temperature and in one Many cases, no elevated temperature can be provided for extrusion got to.
- the procedure according to the invention enables the introduction of pressure via the entire scope of the - seen in cross section advantageously rectilinear edges or the surfaces inside the extruded material, whereby high tightness is achieved and loosening or local Leaks can be avoided.
- An extrusion tool according to the invention has the features according to claim 5.
- the sliding surfaces of the nozzle have a straight, twisted, regular prism, a straight, regular, twisted parallelepiped or a straight twisted, regular, possibly tapering towards the nozzle outlet Form the truncated pyramid.
- At least one of the extrusion material Guide vane imparting rotational movement preferably a guide vane ring and / or guide wing is arranged. It turned out that with such a Training of the tool an equalization of the material distribution or homogenization occurs and cracks and voids are largely formed is avoided.
- the pins can be used to form the rinsing channels Guide vanes or guide vanes, in particular then, if you dispense with a nozzle core, which is the case with the invention Case is easily possible because of the by the Guide vanes supported the presence of a rotational movement Nozzle core is not absolutely necessary.
- FIGS. 7 to 11 different Embodiments of press nozzles and Fig. 12 with a nozzle entered dimensions.
- Fig. 6 shows a longitudinal section through a designed according to the invention Extrusion tool, which has a nozzle inlet 13, a compacting part 9 and has a nozzle 1.
- the nozzle inlet 13 tapers in the direction of the nozzle just like the compacting part 9.
- the nozzle itself can also taper by a few minutes.
- the extrusion die may comprise a core 7, the preferred one conical tapering in the area near the nozzle and in the area away from the nozzle into the nozzle inlet 13 or in the Compaction part 9 extend.
- the area 10 of the nozzle core 7 near the nozzle carries elastically rotatable pins 11 with which rinsing channels 12 in the Blank are formed when it extrudes from the nozzle 1 becomes.
- the cross section of the nozzle 1 is polygonal or its shape Inner surface forms the body of a twisted prism or one twisted parallelepipeds.
- the central region of the nozzle core 7 carries guide vanes 8 to the Extruded material already pressed in the direction of arrow 14 in front of the nozzle 1 in order to rotate the material transport to even out through the nozzle 1.
- Fig. 6a shows a section along the line A-A 'in Fig. 6 and shows guide vanes 8, which are from the nozzle core 7 to Extend inner wall of the nozzle inlet 13 and with which the Nozzle core 7 is held in position.
- Fig. 6b shows a section along the line B-B 'in Fig. 6 by the nozzle 1 with an extruded body 16, in which the rinsing channels 12 are formed with the pins 11.
- the distance a between that of the edges of the Hexagon formed corners 6 will be made according to the dimensions of the Blanks selected.
- the edges 5 of the polygon are horizontal Lines on the sliding surfaces 3 represent which sliding surfaces 3 the extrusion material a rotational movement about the longitudinal axis of the Issue nozzle 1 without loosening the material disadvantageously locally.
- Fig. 7 shows an embodiment of an extrusion tool, at which the sliding surfaces 3 into the compacting part 9 pass.
- guide vanes 8 which are from Core 7 or from the inner wall of the nozzle inlet 13 or both from Nozzle core 7 and the nozzle inlet 13 are worn.
- Fig. 8 shows an embodiment in which sliding surfaces 3 also from area 10 of the nozzle core 7 are worn. It is also possible, the features of those shown in Figs. 7 and 8 To combine embodiments.
- Fig. 8a shows a section along the line A-A 'in Fig. 8 and man recognizes the cross section of the pentagon area 10 of the nozzle core 7 near the nozzle.
- FIGS 9 and 10 each show views of an embodiment rotated by 90 °, in which the guide vanes 8 'from the compacting part 9 are worn.
- the pins 11 consist of elastic metallic material or of elastic Plastic and are in a suitable manner on the guide surfaces the guide wing 8 'or attached to the nozzle core 7.
- Fig. 12 shows an embodiment of an inventive Extrusion tool with entered parameters.
- the angle ⁇ ranges from 20 ° to a maximum of 60 °.
- the angle is advantageously located ⁇ , which indicates the tapering of the compacting area 9, between 30 ° to 50 °, especially at about 40 °.
- the angle ⁇ reflects the taper of the nozzle inlet 13 and is advantageously between 15 ° and 50 °, advantageously between 20 ° and 40 °, especially around 30 °.
- ⁇ denotes the cone angle of the nozzle cone 7 remote from the nozzle, what angle between 20 ° and 60 °, preferably between 30 ° and 50 °, in particular at about 40 °.
- ⁇ is the cone angle of the region 10 near the nozzle Nozzle cone 7 denotes which angle advantageously up to Is 10 ° greater than the taper angle ⁇ of the nozzle inlet 13.
- the length L of the nozzle 1 is at least twice the diameter D of the nozzle, advantageously as the diameter of the nozzle the diameter of the incircle is used, which the Nozzle polygon can be inscribed or an average distance the edges of the twisted nozzle prism from the longitudinal axis of the nozzle is taken.
- the nozzle length is advantageously at least that Three times, especially four times, the nozzle diameter.
- the shape angle ⁇ gives the taper of the nozzle 1 in the direction of it Outlet end and is a few minutes, preferably 2 to 8, in particular 3 to 6, advantageously about 4 minutes of angle.
- Fig. 1 shows the cross section through a nozzle 1 of an inventive Tool, the nozzle 1 in cross section the shape of a regular hexagon.
- 2 shows a nozzle cross section, in which the nozzle 1 has the shape of a dodecagon and the outer shape of the blank produced is almost circular having.
- Fig. 3 shows a cross section through a nozzle, the form of an obtuse angle.
- the extrusion tool or the press nozzle shown is advantageously made of hard metal or steel, in particular wear-resistant tool steel.
- the nozzle is made by creating a negative shape which is the Shrinkage is taken into account in the event of sintering of the press nozzle.
- the mass for the press nozzle is introduced into this mold and advantageously isostatically pressed. After dewaxing and Pre-sintering and any processing takes place Press nozzle and finally its finishing.
- the blanks according to the invention can be equipped with one or more rinsing holes, preferably two to three rinsing holes, each with with a diameter of 1 to 4 mm.
- the blank advantageously has an outer diameter D. after its completion of a maximum of about 20 mm.
- This powder-oil mass is in one Press cylinder evacuated and pre-pressed. This is advantageously done pressing this mass at room temperature by the extrusion tool according to the invention.
- the extrusion tool removed green compacts are in the temperature range of 100 ° dewaxed up to 500 ° C, and presintered at about 900 ° C.
- the sintering process takes place at around 1350 ° to 1450 ° C depending on the material in a vacuum, with a volume contraction of about 40 to 60% or a linear contraction of about 20 to 25% occurs.
- the Sintering process creates a dense, large homogeneity Sintered part that is crack-free and unbreakable.
- the finishing this part e.g. The chip edges or the like are ground with appropriate tools after sintering.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Ceramic Products (AREA)
- Powder Metallurgy (AREA)
- Extrusion Of Metal (AREA)
- Compositions Of Oxide Ceramics (AREA)
Description
Ein Strangpreßwerkzeug zur Herstellung eines Bohrerrohlings mit wendelförmigem Spülloch ist aus der DE-A1-38 14 687 bekannt, wobei die Innenwand der Düse eine wendelförmige Einrichtung besitzt und das die Düse passierende Rohmaterial eine Verdrillung erfährt. Dabei besteht die Düse aus mehreren aneinanderliegenden Scheiben, die zur Veränderung der Wendelsteigung gegeneinander verdreht feststellbar ausgebildet sind.
Claims (16)
- Hartmetall-oder Keramikrohling für Bohr-, Fräs- oder Reibwerkzeuge mit mindestens einem innenliegenden, schraubenförmig in Längsrichtung verlaufenden Spülkanal (12), dadurch gekennzeichnet, daß der Rohling die Querschnittsform eines regelmäßige, konvexen Polygons bzw. regelmäßigen, konvexen Vieleckes, insbesondere mit mehr als vier Ecken (6), oder eines stumpfwinkeligen Zweieckes mit geraden oder zumindest teilweise geraden und gekrümmten, die Ecken (6) verbindenden Kanten (5), besitzt, wobei dieses regelmäßige Polygon oder Zweieck über den Verlauf der Länge des Rohlings um die Achse des Rohlings eine kontinuierlich verdrehte Lage einnimmt bzw. die zwischen den Längskanten des Rohlings verlaufenden Flächen kontinuierlich verdrillt sind.
- Verfahren zur Herstellung eines Hartmetall- oder Keramikrohlings für Bohr-, Fräs- oder Reibwerkzeuge nach Anspruch 1 mit mindestens einem innenliegenden, schraubenförmig in Längsrichtung verlaufenden Spülkanal (12), wobei das Hartmetall- bzw. Keramikmaterial durch eine Düse (1) eines Strangpreßwerkzeuges extrudiert und dabei wendelförmig verdreht wird und wobei jeder der Spülkanäle (12) im Rohling mit einem in die Düse (1) ragenden Stift (11) ausgebildet wird, dadurch gekennzeichnet, daß das Strangpreßmaterial durch Abgleiten des Strangpreßmaterials an der Innenseite der Düse (1) ausgebildeten, wendel- bzw. spiralförmig verlaufenden, sich im Querschnitt zu einem regelmäßigen, konvexen Polygon oder einem stumpfwinkeligen Zweieck mit geraden oder zumindest teilweise geraden und gekrümmten, die Ecken (6) verbindenden Kanten (5), ergänzenden Gleitflächen (3) um die Längsmittelachse des Rohlings bzw. der Düse (1) in Rotation versetzt wird und mit verdrillten Außenflächen, z.B. in Form eines verdrillten Prismas oder Parallelepipeds, aus der Düse (1), vorzugsweise bei Raumtemperatur, extrudiert wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß innerhalb der Düse (1) auf Grund einer Querschnittsverringerung der Düse (1) eine Nachkompaktierung des Strangpreßmateriales direkt vor der Extrusion erfolgt.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß dem Strangpreßmaterial bereits vor der Zufuhr zu der Düse (1), insbesondere während des Kompaktierens, eine Rotationsbewegung, z.B. durch Leitschaufeln (8) und/oder Leitflügel (8') erteilt wird.
- Strangpreßwerkzeug zur Herstellung eines Hartmetall- oder Keramikrohlings für Bohr-, Fräs- oder Reibwerkzeuge mit mindestens einem innenliegenden, schraubenförmig in Längsrichtung verlaufenden Spülkanal (12) nach Anspruch 1 bzw. zur Durchführung des Verfahrens nach einem der Ansprüche 2 bis 4 , wobei das Hartmetall- bzw. das Keramikmaterial durch eine Düse (1) des gegebenenfalls mit einem Düsenkern (7) versehenen Strangpreßwerkzeuges extrudiert und dabei wendelförmig verdrillt wird und zur Ausbildung jedes Spülkanals (12) zumindest ein in die Düse (1) ragender Stift (11) vorgesehen ist, dadurch gekennzeichnet, daß die Düse (1) an ihrer Innenwandfläche (2) eine Anzahl von sich im Querschnitt zu einem regelmäßigen konvexen Polygon oder stumpfwinkeligen Zweieck (4) mit geraden oder zumindest teilweise geraden und gekrümmten, die Ecken (6) verbindenden Kanten (5), ergänzenden Gleitflächen (3) aufweist, welche Gleitflächen (3) einen über die Düsenlange verdrillten Verlauf besitzen.
- Werkzeug nach Anspruch 5, dadurch gekennzeichnet, daß die Gleitflächen (3) ein gerades verdrilltes, regelmäßiges Prisma, ein gerades, regelmäßig verdrilltes Parallelepiped oder einen geraden, verdrillten, regelmäßigen, sich gegebenenfalls zum Düsenauslaß veßüngenden Pyramidenstumpf ausbilden.
- Werkzeug nach einem der Ansprüche 5 bis 6, dadurch gekennzeichnet, daß am Düsenkern (7) und/oder in dem im Strangpreßwerkzeug vor der Düse (1) gelegenen Bereich des Strangpreßwerkzeuges, vorzugsweise im Kompaktierungsbereich (9) des Strangpreßwerkzeuges, zumindest eine dem Strangpreßmaterial eine Rotationsbewegung verleihende Leitschaufel (8), vorzugsweise ein Leitschaufelkranz und/oder Leitflügel (8, 8'), vorzugsweise Leitflügelkranz, angeordnet ist (sind).
- Werkzeug nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Profilierung der Innenwand der Düse (1) mit Gleitflächen (3) bzw. die im Querschnitt durch die Düse (1) polygonale Ausbildung sich in den Kompaktierungsbereich (9) des Strangpreßwerkzeuges erstreckt bzw. sich insbesondere zumindest zum Niveau des düsennahen Teiles (10) des Düsenkernes (7) erstreckt.
- Werkzeug nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß zumindest der düsennahe Bereich (10) des Düsenkernes (7) zur Unterstützung der Rotation des Strangpreßmaterials eine wendelförmige oder im Querschnitt polygonale Ausbildung aufweist.
- Werkzeug nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß die Stifte (11) zur Ausbildung des (der) Spülkanals(kanäle) (12) an den Leitflügeln (8') befestigt sind.
- Werkzeug nach einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, daß der Verlauf der Leitschaufeln und/oder Leitflügel (8, 8') gleich gerichtet ist bzw. vorzugsweise die gleiche Neigung aufweist wie der Verlauf bzw. die Neigung der zwischen den Gleitflächen (3) in der Düse (1) bzw. im Kompaktierungsteil (9) bzw. am Düsenkern (7) ausgebildeten Kanten des Prismas bzw. Parallelepipeds.
- Werkzeug nach einem der Ansprüche 5 bis 11, dadurch gekennzeichnet, daß die Länge (L) der Gleitflächen (3) zumindest das Doppelte, vorzugsweise zumindest das Dreifache, insbesondere zumindest das Vierfache des Düsendurchmessers (D) beträgt.
- Werkzeug nach einem der Ansprüche 5 bis 12, dadurch gekennzeichnet, daß die Düse (3) einen Formwinkel (ε) bzw. eine Verjüngung von 2 bis 8 Winkelminuten, vorzugsweise von 3 bis 6 Winkelminuten, vorzugsweise von annähernd 4 Winkelminuten, besitzt.
- Werkzeug nach einem der Ansprüche 5 bis 13, dadurch gekennzeichnet, daß der Kegelwinkel (δ) des düsennahen Bereiches (10) des Düsenkernes (7) maximal um 10 % größer ist als der Winkel (α) des Kompaktierungsabschnittes (9), wobei der Winkel (α) des Kompaktierungsabschnittes (9) kleiner ist als 60° und vorzugsweise zwischen 20° bis 59°, insbesondere zwischen 30° bis 50°, vorteilhafterweise bei etwa 40° liegt.
- Werkzeug nach einem der Ansprüche 5 bis 14, dadurch gekennzeichnet, daß der Düseneinlauf (13) konisch verjüngt ist, wobei der Verjüngungswinkel (β) zwischen 15° bis 50°, vorzugsweise zwischen 20° bis 40°, insbesondere bei etwa 39°, liegt.
- Werkzeug nach einem der Ansprüche 5 bis 15, dadurch gekennzeichnet, daß der düsenferne Kegelwinkel (γ) des Düsenkernes (7) zwischen 20° und 60°, vorzugsweise zwischen 30° und 50°, insbesondere bei etwa 40° liegt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT113290 | 1990-05-22 | ||
AT1132/90 | 1990-05-22 | ||
AT0113290A AT398286B (de) | 1990-05-22 | 1990-05-22 | Hartmetall- oder keramikrohling sowie verfahren und werkzeug zur herstellung desselben |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0458774A1 EP0458774A1 (de) | 1991-11-27 |
EP0458774B1 EP0458774B1 (de) | 1995-08-02 |
EP0458774B2 true EP0458774B2 (de) | 1999-12-15 |
Family
ID=3507287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91890093A Expired - Lifetime EP0458774B2 (de) | 1990-05-22 | 1991-05-02 | Hartmetall- oder Keramikrohling sowie Verfahren und Werkzeug zur Herstellung derselben |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0458774B2 (de) |
AT (2) | AT398286B (de) |
DE (1) | DE59106114D1 (de) |
ES (1) | ES2077838T5 (de) |
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DE202014000866U1 (de) * | 2014-02-03 | 2015-05-06 | Johne & Co. Präzisionswerkzeuge GmbH | Werkzeugkopfelement zum Fertigen eines Werkzeugkopfes, Werkzeugkopf und Werkzeugaufnahmemittel |
US9205578B2 (en) | 2005-09-26 | 2015-12-08 | Aeroprobe Corporation | Fabrication tools for exerting normal forces on feedstock |
US9266191B2 (en) | 2013-12-18 | 2016-02-23 | Aeroprobe Corporation | Fabrication of monolithic stiffening ribs on metallic sheets |
US9511446B2 (en) | 2014-12-17 | 2016-12-06 | Aeroprobe Corporation | In-situ interlocking of metals using additive friction stir processing |
US9511445B2 (en) | 2014-12-17 | 2016-12-06 | Aeroprobe Corporation | Solid state joining using additive friction stir processing |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE4211827C2 (de) * | 1992-04-08 | 1996-02-22 | Guehring Joerg Dr | Verfahren und Strangpreßwerkzeug zur kontinuierlichen Herstellung von zylindrischen Stäben mit zumindest einem innenliegenden, wendelförmigen Kanal, und nach diesem Verfahren hergestellter Stab |
DE19644447C2 (de) * | 1996-10-25 | 2001-10-18 | Friedrichs Konrad Kg | Verfahren und Vorrichtung zur kontinuierlichen Extrusion von mit einem wendelförmigen Innenkanal ausgestatteten Stäben aus plastischem Rohmaterial |
SE516268C2 (sv) | 1999-06-03 | 2001-12-10 | Seco Tools Ab | Metod och anordning med radiellt rörliga backar för strängpressning av roterande verktyg |
SI21266A (sl) * | 2002-07-24 | 2004-02-29 | Institut "Jo�Ef Stefan" | Suspenzije prahov za plastično oblikovanje pri sobni temperaturi in postopki oblikovanja te suspenzije |
US8875976B2 (en) | 2005-09-26 | 2014-11-04 | Aeroprobe Corporation | System for continuous feeding of filler material for friction stir welding, processing and fabrication |
US20080041921A1 (en) | 2005-09-26 | 2008-02-21 | Kevin Creehan | Friction stir fabrication |
DE102010019599A1 (de) | 2010-05-05 | 2011-11-10 | Gühring Ohg | Pulvermetallurgischer Stahl |
WO2013002869A2 (en) * | 2011-04-07 | 2013-01-03 | Schultz-Creehan Holdings, Inc. | System for continuous feeding of filler material for friction stir fabrication and self-reacting friction stir welding tool |
US11311959B2 (en) | 2017-10-31 | 2022-04-26 | MELD Manufacturing Corporation | Solid-state additive manufacturing system and material compositions and structures |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1584761A1 (de) * | 1951-01-28 | 1970-02-05 | Steatit Magnesia Ag | Verfahren und Vorrichtung zur Herstellung von keramischen Wendelstaeben endloser Laenge |
JPH0635603B2 (ja) * | 1988-03-07 | 1994-05-11 | 義信 小林 | ドリル,エンドミル等転削工具や製法 |
DE3814687A1 (de) * | 1988-04-30 | 1989-11-09 | Krupp Widia Gmbh | Strangpresswerkzeug |
-
1990
- 1990-05-22 AT AT0113290A patent/AT398286B/de not_active IP Right Cessation
-
1991
- 1991-05-02 DE DE59106114T patent/DE59106114D1/de not_active Expired - Fee Related
- 1991-05-02 EP EP91890093A patent/EP0458774B2/de not_active Expired - Lifetime
- 1991-05-02 ES ES91890093T patent/ES2077838T5/es not_active Expired - Lifetime
- 1991-05-02 AT AT91890093T patent/ATE125737T1/de not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9205578B2 (en) | 2005-09-26 | 2015-12-08 | Aeroprobe Corporation | Fabrication tools for exerting normal forces on feedstock |
US9266191B2 (en) | 2013-12-18 | 2016-02-23 | Aeroprobe Corporation | Fabrication of monolithic stiffening ribs on metallic sheets |
DE202014000866U1 (de) * | 2014-02-03 | 2015-05-06 | Johne & Co. Präzisionswerkzeuge GmbH | Werkzeugkopfelement zum Fertigen eines Werkzeugkopfes, Werkzeugkopf und Werkzeugaufnahmemittel |
US9511446B2 (en) | 2014-12-17 | 2016-12-06 | Aeroprobe Corporation | In-situ interlocking of metals using additive friction stir processing |
US9511445B2 (en) | 2014-12-17 | 2016-12-06 | Aeroprobe Corporation | Solid state joining using additive friction stir processing |
Also Published As
Publication number | Publication date |
---|---|
AT398286B (de) | 1994-11-25 |
ES2077838T3 (es) | 1995-12-01 |
EP0458774A1 (de) | 1991-11-27 |
ATA113290A (de) | 1994-03-15 |
DE59106114D1 (de) | 1995-09-07 |
EP0458774B1 (de) | 1995-08-02 |
ATE125737T1 (de) | 1995-08-15 |
ES2077838T5 (es) | 2000-03-16 |
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