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EP1609572A1 - Cutting device such as wall groove milling tool provided with sealing means - Google Patents

Cutting device such as wall groove milling tool provided with sealing means Download PDF

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Publication number
EP1609572A1
EP1609572A1 EP05105492A EP05105492A EP1609572A1 EP 1609572 A1 EP1609572 A1 EP 1609572A1 EP 05105492 A EP05105492 A EP 05105492A EP 05105492 A EP05105492 A EP 05105492A EP 1609572 A1 EP1609572 A1 EP 1609572A1
Authority
EP
European Patent Office
Prior art keywords
shaft
cover
cutting device
slot
cutting
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
EP05105492A
Other languages
German (de)
French (fr)
Other versions
EP1609572B1 (en
Inventor
Thomas Blatz
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.)
Hilti AG
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Hilti AG
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Filing date
Publication date
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Publication of EP1609572A1 publication Critical patent/EP1609572A1/en
Application granted granted Critical
Publication of EP1609572B1 publication Critical patent/EP1609572B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/183—Hand tools, e.g. portable, motor driven

Definitions

  • Such cutters have at least one drivable via a motor assembly on a shaft arranged cutting tool, which has a dome-shaped Covering device is shielded.
  • the cutting tool such. B. the saw blade
  • the covering means for this purpose in at least one side wall a slit-shaped passage for the shaft.
  • the Cover device is designed as a fan cover consisting of a guide shaft and a protective hood exists.
  • the protective cover can be in the guide shaft immerse, in which there is also a slot-shaped passage for the shaft.
  • the disadvantage here is that the gap between the guide shaft and guard not is air and dustproof and so when using a suction pressure losses caused, which affects the suction power.
  • the object of the present invention is to provide a tool device of to develop the aforementioned type which avoids the disadvantages mentioned.
  • the sealants have an eccentric around the shaft pivotable closure element, which comprises a control means for implementing a Lowering movement of the shaft relative to the covering device in a pivoting movement of the Includes closure element.
  • the closure element as eccentric disc formed, which has an eccentrically arranged opening for the shaft.
  • control means comprise a circumferential annular surface of the eccentric disc, the can be guided on a mating surface lying in the region of the support plane.
  • a pivoting of the closure means or the Excenter disc causes.
  • the Excenter disc loaded in the direction of the counter surface and so also when lifting the Shaft forces a guide of the ring surface on the counter surface.
  • a forced tour of the Excenter disc can but z. B. also be made possible by a slotted guide.
  • This web can also be at least a part of Training support plane.
  • a particularly good sealing of the covering device on the bushing is achieved when the closure member slidably seals against the slit-shaped passage having side wall of the cover rests.
  • the cutter 10 shown in Figures 1 to 4, which here as a wall chaser is formed, has two arranged on a shaft 12 cutting tools 14, such.
  • the shaft 12 and thus the cutting tools 14 are coupled via a shaft 12 coupled to the engine assembly 13, which may be a Transmission may include, driven.
  • FIGS. 1 and 2 In the position of the cutting tools 14 shown in FIGS. 1 and 2 are located this almost completely in the interior of a trained as a protective hood hood-shaped covering device 20.
  • a suction opening 30 At this covering device is a suction opening 30 (see Fig. 1) arranged, which with a not reproduced here suction device is connectable.
  • this forms a support plane 11, on which the cutting device 10 can be applied to a substrate U to be processed is (see Figures 3 and 4).
  • a slot-shaped passage 22 is arranged for the shaft 12, through which these from the Cover device 20 is led out.
  • the motor assembly 13 with the shaft 12 and the Cutting tools 14 is pivotally mounted (pivot bearing point in the figures not shown), so that the shaft 12 with the cutting tools 14 with respect to the support plane 11 or opposite the cover 20 is lowered (see arrow 40 in Fig. 2).
  • the closure means 23 has an eccentrically arranged opening 24 through which the shaft 12 passed through.
  • the closure means 23 rests against the side wall 28 and covers the slot-shaped passage 22 sealingly.
  • On the closure means 23 is to the Breakthrough 24 around a counterbore 29 arranged in a bearing neck 17th is recorded rotatably.
  • control means 25 is arranged.
  • This control means 25 serves the automatic pivoting of the closure means 23 when the cutting tools 14 lowered with the shaft 12 relative to the covering device 20 and the support plane 11 become.
  • the control means 25 or the annular surface 26 bears against a mating surface 16, which is formed on a web projecting perpendicularly from the side wall 28.
  • the shaft 12 with the cutting tools 14 against lowered the cover 20 and the support plane 11 performs the closure means 23 due to the leadership of the annular surface 26 on the Counter surface 16 and the shorter distance of the shaft 12 to the web 21 a Swiveling movement 41.
  • the closure means 23 is pivoted almost 180 °, as in particular from Fig. 4 can be seen.
  • the sealing of the bushing 22 also took place during the pivoting movement 41 is substantially complete. Is at the suction opening 30 a Dust extraction connected, so there is almost no negative pressure at the passage 22 lost. Air can only be sucked between the support plane and the ground U become.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Sawing (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Sealing Material Composition (AREA)
  • Coating Apparatus (AREA)

Abstract

Cutting appliance (10) has cutting tool (14) situated on a motor-driven shaft (12), with a supporting plane (11) which can be placed on the underlying surface to be worked and against which the cutting tool can be lowered. It has a hub-shaped coating device (20) with a slit-shaped entrance hole (22) for the shaft, containing jointing solution to at least partly seal the slit-shaped hole. The solution has a closing part (23) moveable eccentrically around the shaft which contains a control device (25) to lower the shaft relative to the coating device in the hinged motion of the closing part.

Description

Die vorliegende Erfindung betrifft ein Schneidgerät, wie eine Mauernutfräse, eine Kreissäge oder einen Trennschneider, der im Oberbegriff von Patentanspruch 1 genannten Art.The present invention relates to a cutting device, such as a wall chaser, a circular saw or a separating cutter, the type mentioned in the preamble of claim 1.

Derartige Schneidgeräte, weisen wenigstens ein über eine Motoranordnung antreibbares, an einer Welle angeordnetes Schneidwerkzeug auf, das über eine haubenförmige Abdeckeinrichtung abgeschirmt ist. Bei einem Säge- oder Schneidevorgang mit dem Schneidgerät kann das Schneidewerkzeug, wie z. B. das Sägeblatt, in den zu bearbeitenden Untergrund eintauchen, wozu das Schneidwerkzeug gegenüber der Abdeckeinrichtung und der Stützebene des Schneidgerätes absenkbar ist. Um die Absenkung der Welle zu ermöglichen, weist die Abdeckeinrichtung dazu in wenigstens einer Seitenwand eine schlitzförmige Durchführung für die Welle auf. Insbesondere bei handgeführten Schneidgeräten, bei denen eine Staubabsaugung aus der Abdeckeinrichtung vorgesehen ist, ist eine hohe Dichtigkeit der Abdeckeinrichtung wünschenswert.Such cutters have at least one drivable via a motor assembly on a shaft arranged cutting tool, which has a dome-shaped Covering device is shielded. In a sawing or cutting process with the Cutting device, the cutting tool, such. B. the saw blade, in the processed Immerse underground, including the cutting tool against the cover and the support plane of the cutting device can be lowered. To the lowering of the shaft too permit, the covering means for this purpose in at least one side wall a slit-shaped passage for the shaft. Especially with hand-held Cutters in which a dust extraction is provided from the cover, is a high density of the cover desirable.

Aus der DE 85 34 802 U1 ist ein derartiges Schneidgerät bekannt, bei dem die Durchführung an der haubenförmigen Abdeckeinrichtung über Bürsten gegenüber der Welle angedichtet ist.From DE 85 34 802 U1 such a cutting device is known in which the implementation inscribed on the hood-shaped covering device via brushes with respect to the shaft is.

Von Nachteil hierbei ist, dass ein derartiger Bürstenvorhang zum einen nicht luft- und staubdicht ist und zum anderen einem starken Verschleiss unterliegt.The disadvantage of this is that such a brush curtain for a non-air and is dustproof and on the other subject to heavy wear.

Aus der DE 201 00 307 U1 ist ein weiteres Schneidgerät bekannt, bei dem die Abdeckeinrichtung als Fächerhaube ausgebildet ist, die aus einem Führungsschacht und einer Schutzhaube besteht. Die Schutzhaube kann dabei in den Führungsschacht eintauchen, in dem sich auch eine schlitzförmige Durchführung für die Welle befindet. From DE 201 00 307 U1 a further cutting device is known in which the Cover device is designed as a fan cover consisting of a guide shaft and a protective hood exists. The protective cover can be in the guide shaft immerse, in which there is also a slot-shaped passage for the shaft.

Von Nachteil hierbei ist, dass der Spalt zwischen Führungsschacht und Schutzhaube nicht luft- und staubdicht ist und so bei Verwendung einer Absaugeinrichtung Druckverluste verursacht, die die Absaugleistung beeinträchtigt.The disadvantage here is that the gap between the guide shaft and guard not is air and dustproof and so when using a suction pressure losses caused, which affects the suction power.

Die Aufgabe der vorliegenden Erfindung liegt darin, eine Werkzeugvorrichtung der vorgenannten Art zu entwickeln, die die genannten Nachteile vermeidet.The object of the present invention is to provide a tool device of to develop the aforementioned type which avoids the disadvantages mentioned.

Diese Aufgabe wird erfindungsgemäss durch die in Anspruch 1 genannten Massnahmen erreicht. Demnach weisen die Dichtmittel ein exzentrisch um die Welle herum verschwenkbares Verschlusselement auf, welches ein Steuermittel zur Umsetzung einer Absenkbewegung der Welle relativ zur Abdeckeinrichtung in eine Verschwenkbewegung des Verschlusselementes beinhaltet.This object is achieved according to the invention by the measures mentioned in claim 1 reached. Thus, the sealants have an eccentric around the shaft pivotable closure element, which comprises a control means for implementing a Lowering movement of the shaft relative to the covering device in a pivoting movement of the Includes closure element.

Durch ein derartiges, exzentrisch an der Welle angeordnetes und sich bei einer Absenkbewegung in seiner Verschlusslage automatisch verstellbares Verschlusselement wird eine hohe Dichtigkeit an der schlitzförmigen Durchführung gewährleistet. Diese Dichtigkeit an der Durchführung ist bei Schneidgeräten mit angeschlossener Staubabsaugung von Vorteil, da ein ausreichender Saugdruck gewährleistet wird. Sie ist aber auch bei nicht vorhandener Staubabsaugung von Vorteil, da kein Schneid- oder Sägestaub durch die Durchführung nach aussen ziehen kann.By such, eccentrically arranged on the shaft and at a Lowering movement in its closed position automatically adjustable closure element a high tightness is ensured at the slot-shaped implementation. These Tightness at the implementation is connected with cutters with Dust extraction advantageous because a sufficient suction pressure is ensured. she is But even with no existing dust extraction advantageous because no cutting or Saw dust through the bushing to the outside can pull.

In einer konstruktiv einfachen Lösung ist das Verschlusselement als Excenterscheibe ausgebildet, die einen exzentrisch angeordneten Durchbruch für die Welle aufweist.In a structurally simple solution, the closure element as eccentric disc formed, which has an eccentrically arranged opening for the shaft.

Vorteilhaft beinhalten die Steuermittel eine umfängliche Ringfläche der Excenterscheibe, die auf einer im Bereich der Stützebene liegenden Gegenfläche führbar ist. Bei einer Absenkung der Welle gegenüber der statisch im Bereich der Stützebene liegenden Gegenfläche wird dadurch in einfacher Weise ein Verschwenken des Verschlussmittels bzw. der Excenterscheibe bewirkt. Es kann ferner ein Federelement vorgesehen sein, dass die Excenterscheibe in Richtung auf die Gegenfläche belastet und so auch beim Anheben der Welle eine Führung der Ringfläche an der Gegenfläche erzwingt. Eine Zwangsführung der Excenterscheibe kann aber z. B. auch durch eine Kulissenführung ermöglicht werden.Advantageously, the control means comprise a circumferential annular surface of the eccentric disc, the can be guided on a mating surface lying in the region of the support plane. With a lowering the shaft relative to the static surface lying in the region of the support plane counter surface in a simple manner, a pivoting of the closure means or the Excenter disc causes. It can also be provided a spring element, that the Excenter disc loaded in the direction of the counter surface and so also when lifting the Shaft forces a guide of the ring surface on the counter surface. A forced tour of the Excenter disc can but z. B. also be made possible by a slotted guide.

Günstig ist es dabei, wenn die Gegenfläche an einem an der Abdeckeinrichtung angeordneten Steg ausgebildet ist. Dieser Steg kann dabei auch zumindest einen Teil der Stützebene ausbilden. It is advantageous if the counter surface on one of the cover arranged web is formed. This web can also be at least a part of Training support plane.

Bei einer schwenkbaren Lagerung der Motoranordnung mit der Welle und dem zumindest einen Schneidwerkzeug gegenüber der Abdeckeinrichtung und der Stützebene ist es von Vorteil, wenn die schlitzförmige Durchführung bogenförmig bzw. in einem Radius in einer Seitenwand der Abdeckeinrichtung verläuft. Hierdurch kann die Schlitzbreite der Durchführung so gering ausgebildet werden, dass die Welle innerhalb der notwendigen Toleranz eben durch diese hindurchgeführt werden kann.In a pivotable mounting of the motor assembly with the shaft and the at least a cutting tool with respect to the cover and the support plane is of Advantage, if the slot-shaped passage arcuate or in a radius in one Side wall of the covering runs. As a result, the slot width of the Implementation be made so low that the shaft within the necessary Tolerance can be passed through this just.

Eine besonders gute Abdichtung der Abdeckeinrichtung an der Durchführung wird erzielt, wenn das Verschlusselement gleit-dichtend an der, die schlitzförmige Durchführung aufweisenden Seitenwand der Abdeckeinrichtung anliegt.A particularly good sealing of the covering device on the bushing is achieved when the closure member slidably seals against the slit-shaped passage having side wall of the cover rests.

Weitere Vorteile und Massnahmen der Erfindung ergeben sich aus den Unteransprüchen, der nachfolgenden Beschreibung und den Zeichnungen. In den Zeichnungen ist die Erfindung in einem Ausführungsbeispiel dargestellt.Further advantages and measures of the invention emerge from the subclaims, the following description and the drawings. In the drawings is the Invention shown in one embodiment.

Es zeigen:

Fig. 1
ein Schneidgerät in teilweise geschnittener Ansicht mit nicht abgesenkten Schneidwerkzeugen,
Fig. 2
eine teilweise Schnittansicht durch das Schneidgerät entlang der Linie II - II aus Fig. 1,
Fig.3
das Schneidgerät in teilweise geschnittener Ansicht gem. Fig. 1 mit in einen Untergrund abgesenkten Schneidwerkzeugen,
Fig. 4
eine teilweise Schnittansicht durch das Schneidgerät entlang der Linie IV - IV aus Fig. 3.
Show it:
Fig. 1
a cutting device in a partially cutaway view with non-lowered cutting tools,
Fig. 2
a partial sectional view through the cutter along the line II - II of Fig. 1,
Figure 3
the cutter in a partially cut view acc. 1 with lowered in a background cutting tools,
Fig. 4
a partial sectional view through the cutter along the line IV - IV of Fig. 3rd

Das in den Figuren 1 bis 4 dargestellte Schneidgerät 10, welches hier als Mauernutfräse ausgebildet ist, weist zwei auf einer Welle 12 angeordnete Schneidwerkzeuge 14, wie z. B. Diamanttrennscheiben oder Sägeblätter, auf. Die Welle 12 und damit die Schneidwerkzeuge 14 sind über eine mit der Welle 12 gekoppelten Motoranordnung 13, die ggf. eine Getriebeeinrichtung beinhalten kann, antreibbar.The cutter 10 shown in Figures 1 to 4, which here as a wall chaser is formed, has two arranged on a shaft 12 cutting tools 14, such. B. Diamond cutting discs or saw blades, on. The shaft 12 and thus the cutting tools 14 are coupled via a shaft 12 coupled to the engine assembly 13, which may be a Transmission may include, driven.

In der in den Figuren 1 und 2 dargestellten Stellung der Schneidwerkzeuge 14 befinden sich diese nahezu vollständig im Innenraum einer als Schutzhaube ausgebildeten haubenförmigen Abdeckeinrichtung 20. An dieser Abdeckeinrichtung ist eine Absaugöffnung 30 (vgl. Fig. 1) angeordnet, die mit einer hier nicht wiedergegebenen Absaugeinrichtung verbindbar ist. An dem offenen Ende der Abdeckeinrichtung 20, bildet diese eine Stützebene 11 aus, an welcher das Schneidgerät 10 an einen zu bearbeitenden Untergrund U anlegbar ist (vgl. Figuren 3 und 4).In the position of the cutting tools 14 shown in FIGS. 1 and 2 are located this almost completely in the interior of a trained as a protective hood hood-shaped covering device 20. At this covering device is a suction opening 30 (see Fig. 1) arranged, which with a not reproduced here suction device is connectable. At the open end of the cover 20, this forms a support plane 11, on which the cutting device 10 can be applied to a substrate U to be processed is (see Figures 3 and 4).

In einer Seitenwand 28 der Abdeckeinrichtung 20, die der Motoranordnung 13 zugewandt ist, ist eine schlitzförmige Durchführung 22 für die Welle 12 angeordnet, durch die diese aus der Abdeckeinrichtung 20 herausgeführt ist. Die Motoranordnung 13 mit der Welle 12 und den Schneidwerkzeugen 14 ist schwenkbar gelagert (Schwenklagerstelle in den Figuren nicht dargestellt), so dass die Welle 12 mit den Schneidwerkzeugen 14 gegenüber der Stützebene 11 bzw. gegenüber der Abdeckeinrichtung 20 absenkbar ist (vgl. Pfeil 40 in Fig. 2).In a side wall 28 of the cover device 20, which faces the motor assembly 13, is a slot-shaped passage 22 is arranged for the shaft 12, through which these from the Cover device 20 is led out. The motor assembly 13 with the shaft 12 and the Cutting tools 14 is pivotally mounted (pivot bearing point in the figures not shown), so that the shaft 12 with the cutting tools 14 with respect to the support plane 11 or opposite the cover 20 is lowered (see arrow 40 in Fig. 2).

An der Abdeckeinrichtung 20 ist ein Dichtmittel in Form eines Verschlussmittels 23 vorgesehen, das hier als kreisrunde Excenterscheibe ausgebildet ist. Das Verschlussmittel 23 weist einen exzentrisch angeordneten Durchbruch 24 auf, durch den die Welle 12 hindurchgeführt ist. Das Verschlussmittel 23 liegt dabei an der Seitenwand 28 an und deckt die schlitzförmige Durchführung 22 dichtend ab. An dem Verschlussmittel 23 ist um den Durchbruch 24 herum ein Gegenlagerstutzen 29 angeordnet der in einem Lagerstutzen 17 drehbeweglich aufgenommen ist.At the cover 20 is a sealing means in the form of a closure means 23rd provided, which is designed here as a circular eccentric disc. The closure means 23 has an eccentrically arranged opening 24 through which the shaft 12 passed through. The closure means 23 rests against the side wall 28 and covers the slot-shaped passage 22 sealingly. On the closure means 23 is to the Breakthrough 24 around a counterbore 29 arranged in a bearing neck 17th is recorded rotatably.

An dem als kreisförmige Excenterscheibe ausgebildeten Verschlussmittel 23 ist randlich ein als Ringfläche 26 ausgebildetes Steuermittel 25 angeordnet. Dieses Steuermittel 25 dient der automatischen Verschwenkung des Verschlussmittels 23, wenn die Schneidwerkzeuge 14 mit der Welle 12 gegenüber der Abdeckeinrichtung 20 und der Stützebene 11 abgesenkt werden. Dazu liegt das Steuermittel 25 bzw. die Ringfläche 26 an einer Gegenfläche 16 an, die an einem senkrecht von der Seitenwand 28 abragenden Steg 21 ausgebildet ist.At the designed as a circular eccentric locking means 23 is randlich a arranged as an annular surface 26 control means 25 is arranged. This control means 25 serves the automatic pivoting of the closure means 23 when the cutting tools 14 lowered with the shaft 12 relative to the covering device 20 and the support plane 11 become. For this purpose, the control means 25 or the annular surface 26 bears against a mating surface 16, which is formed on a web projecting perpendicularly from the side wall 28.

Wird also, wie in Fig. 2 dargestellt, die Welle 12 mit den Schneidwerkzeugen 14 gegenüber der Abdeckeinrichtung 20 und der Stützebene 11 abgesenkt (vgl. Figur 2, Bezugszeichen 40), dann vollführt das Verschlussmittel 23 auf Grund der Führung der Ringfläche 26 auf der Gegenfläche 16 und des kürzer werdenden Abstands der Welle 12 zum Steg 21 eine Verschwenkbewegung 41. Nach der vollständigen Absenkung der Welle 12 mit den Schneidwerkzeugen 14 gegenüber der Abdeckeinrichtung 20 und der Stützebene 11, wenn die Schneidwerkzeuge 14 z. B. in einen Untergrund U eingetaucht sind (vgl. Figuren 3 und 4), dann ist das Verschlussmittel 23 nahezu um 180° verschwenkt, wie insbesondere aus Fig. 4 zu entnehmen ist. Die Abdichtung der Durchführung 22 erfolgte dabei auch während der Verschwenkbewegung 41 im Wesentlichen vollständig. Ist an der Absaugöffnung 30 eine Staubabsaugung angeschlossen, so geht nahezu kein Unterdruck an der Durchführung 22 verloren. Luft kann lediglich zwischen der Stützebene und dem Untergrund U angesaugt werden.So, as shown in Fig. 2, the shaft 12 with the cutting tools 14 against lowered the cover 20 and the support plane 11 (see Figure 2, reference numeral 40), then performs the closure means 23 due to the leadership of the annular surface 26 on the Counter surface 16 and the shorter distance of the shaft 12 to the web 21 a Swiveling movement 41. After the complete lowering of the shaft 12 with the Cutting tools 14 relative to the cover 20 and the support plane 11, when the cutting tools 14 z. B. are immersed in a substrate U (see Figures 3 and 4), then the closure means 23 is pivoted almost 180 °, as in particular from Fig. 4 can be seen. The sealing of the bushing 22 also took place during the pivoting movement 41 is substantially complete. Is at the suction opening 30 a Dust extraction connected, so there is almost no negative pressure at the passage 22 lost. Air can only be sucked between the support plane and the ground U become.

Zur Bewegung der Schneideinrichtung 10 auf dem Untergrund U sind noch Führungsrollen 19 vorgesehen, wie z. B. vier Führungsrollen mit jeweils einer Führungsrolle 19 an jeder Ecke einer im Wesentlichen rechteckigen Stützebene 11. Die Führungsrollen 19 können dabei auch die Stützebene 11 etwas von dem Untergrund U beabstanden.To move the cutter 10 on the ground U are still leadership roles 19 provided, such. B. four guide rollers, each with a guide roller 19 at each Corner of a substantially rectangular support plane 11. The guide rollers 19 can while also the support plane 11 is slightly spaced from the substrate U.

Claims (6)

Schneidgerät, mit wenigstens einem auf einer Welle (12) gelagerten Schneidwerkzeug (14), welches über eine Motoranordnung (13) antreibbar ist, mit einer Stützebene (11) die an einen zu bearbeitenden Untergrund (U) ansetzbar und gegenüber der das Schneidwerkzeug (14) absenkbar ist und mit einer zur Stützebene (11) statischen, haubenförmigen Abdeckeinrichtung (20) des Schneidwerkzeugs (14) die eine schlitzförmige Durchführung (22) für die Welle (12) aufweist, wobei Dichtmittel zum zumindest teilweisen Abdichten der schlitzförmigen Durchführung (22) vorgesehen sind,
dadurch gekennzeichnet, dass die Dichtmittel ein exzentrisch um die Welle herum verschwenkbares Verschlusselement (23) aufweisen, welches ein Steuermittel (25) zur Umsetzung einer Absenkbewegung (40) der Welle (12) relativ zur Abdeckeinrichtung (20) in eine Verschwenkbewegung (41) des Verschlusselementes (23) beinhaltet.Cutter, with at least one on a shaft (12) mounted cutting tool (14) which is drivable via a motor assembly (13), with a support plane (11) to a substrate to be machined (U) attachable and with respect to the cutting tool (14 ) can be lowered and with a to the support plane (11) static, hood-shaped cover (20) of the cutting tool (14) having a slot-shaped passage (22) for the shaft (12), said sealing means for at least partially sealing the slot-shaped passage (22) are provided
characterized in that the sealing means comprise an eccentric pivotable about the shaft closure element (23) having a control means (25) for implementing a lowering movement (40) of the shaft (12) relative to the cover (20) in a pivoting movement (41) of the Closing element (23) includes. Schneidgerät, nach Anspruch 1, dadurch gekennzeichnet, dass das Verschlusselement (23) als Excenterscheibe ausgebildet ist, die einen exzentrisch angeordneten Durchbruch (24) für die Welle (12) aufweist.Cutting device according to claim 1, characterized in that the closure element (23) is designed as an eccentric disc, which has an eccentrically arranged opening (24) for the shaft (12). Schneidgerät, nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Steuermittel (25) eine umfängliche Ringfläche (26) der Excenterscheibe beinhalten, die auf einer im Bereich der Stützebene (11) liegenden Gegenfläche (16) führbar ist.Cutting device according to claim 1 or 2, characterized in that the control means (25) include a circumferential annular surface (26) of the eccentric disc, which can be guided on a lying in the region of the support plane (11) counter surface (16). Schneidgerät, nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Gegenfläche (16) an einem an der Abdeckeinrichtung (20) angeordneten Steg (21) ausgebildet ist.Cutting device according to one of claims 1 to 3, characterized in that the counter-surface (16) is formed on a cover (20) arranged on the web (21). Schneidgerät, nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die schlitzförmige Durchführung (22) bogenförmig in einer Seitenwand (28) der Abdeckeinrichtung (20) verläuft.Cutting device according to one of claims 1 to 4, characterized in that the slot-shaped passage (22) extends arcuately in a side wall (28) of the cover (20). Schneidgerät, nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Verschlusselement (23) gleit-dichtend an der, die schlitzförmige Durchführung (22) aufweisenden Seitenwand (28) der Abdeckeinrichtung (20) anliegt.Cutting device according to one of claims 1 to 5, characterized in that the closure element (23) slidably against the, the slot-shaped passage (22) having side wall (28) of the cover (20) abuts.
EP05105492A 2004-06-21 2005-06-21 Cutting device such as wall groove milling tool provided with sealing means Active EP1609572B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004029986 2004-06-21
DE102004029986A DE102004029986B4 (en) 2004-06-21 2004-06-21 cutter

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EP1609572A1 true EP1609572A1 (en) 2005-12-28
EP1609572B1 EP1609572B1 (en) 2007-08-15

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EP (1) EP1609572B1 (en)
AT (1) ATE369955T1 (en)
DE (2) DE102004029986B4 (en)

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EP1775070A1 (en) * 2005-10-15 2007-04-18 Curtis Machine Tools Limited Grinding machine
EP2607036A3 (en) * 2011-12-22 2013-08-07 Mafell AG Handheld milling machine
EP3173187A1 (en) * 2015-11-25 2017-05-31 HILTI Aktiengesellschaft Portable, hand held cutting-off machine
EP3173189A1 (en) * 2015-11-25 2017-05-31 HILTI Aktiengesellschaft Portable, hand held cutting-off machine
EP3173188A1 (en) * 2015-11-25 2017-05-31 HILTI Aktiengesellschaft Portable, hand held cutting-off machine
CN107696304A (en) * 2017-09-26 2018-02-16 冯云鹏 A kind of clip equipment that can reduce construction industry accident
CN111531730A (en) * 2020-05-15 2020-08-14 中安华力建设集团有限公司 Construction engineering ground storehouse pipeline laying casing groove arranges cutting device

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1775070A1 (en) * 2005-10-15 2007-04-18 Curtis Machine Tools Limited Grinding machine
EP2607036A3 (en) * 2011-12-22 2013-08-07 Mafell AG Handheld milling machine
WO2017089169A1 (en) * 2015-11-25 2017-06-01 Hilti Aktiengesellschaft Portable, hand-guided abrasive cutting machine
EP3173189A1 (en) * 2015-11-25 2017-05-31 HILTI Aktiengesellschaft Portable, hand held cutting-off machine
EP3173188A1 (en) * 2015-11-25 2017-05-31 HILTI Aktiengesellschaft Portable, hand held cutting-off machine
WO2017089180A1 (en) * 2015-11-25 2017-06-01 Hilti Aktiengesellschaft Hand-held, hand-guided abrasive cutting machine
EP3173187A1 (en) * 2015-11-25 2017-05-31 HILTI Aktiengesellschaft Portable, hand held cutting-off machine
WO2017089192A1 (en) * 2015-11-25 2017-06-01 Hilti Aktiengesellschaft Hand-held, hand-guided abrasive cutting machine
CN108290270A (en) * 2015-11-25 2018-07-17 喜利得股份公司 Portable hand-held abrasive wheel cutting machine
CN108290272A (en) * 2015-11-25 2018-07-17 喜利得股份公司 Portable hand-held abrasive wheel cutting machine
US10821571B2 (en) 2015-11-25 2020-11-03 Hilti Aktiengesellschaft Handheld, hand-guided cutting-off machine
EP3380272B1 (en) 2015-11-25 2023-07-05 Hilti Aktiengesellschaft Portable, hand held cutting-off machine
EP4234163A3 (en) * 2015-11-25 2023-09-13 Hilti Aktiengesellschaft Portable, hand held cutting-off machine
CN107696304A (en) * 2017-09-26 2018-02-16 冯云鹏 A kind of clip equipment that can reduce construction industry accident
CN111531730A (en) * 2020-05-15 2020-08-14 中安华力建设集团有限公司 Construction engineering ground storehouse pipeline laying casing groove arranges cutting device

Also Published As

Publication number Publication date
EP1609572B1 (en) 2007-08-15
ATE369955T1 (en) 2007-09-15
DE502005001214D1 (en) 2007-09-27
DE102004029986B4 (en) 2007-06-14
DE102004029986A1 (en) 2006-01-05

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