EP0706606B1 - Cutting element for a coal cutting machine - Google Patents

Cutting element for a coal cutting machine Download PDF

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Publication number
EP0706606B1
EP0706606B1 EP94924221A EP94924221A EP0706606B1 EP 0706606 B1 EP0706606 B1 EP 0706606B1 EP 94924221 A EP94924221 A EP 94924221A EP 94924221 A EP94924221 A EP 94924221A EP 0706606 B1 EP0706606 B1 EP 0706606B1
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EP
European Patent Office
Prior art keywords
chisel
plug
chisel holder
holder
cutter member
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
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EP94924221A
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German (de)
French (fr)
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EP0706606A1 (en
Inventor
Karl Kammerer
Bernhard Diessner
Dieter Simons
Bernd Holl
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.)
Wirtgen GmbH
Betek GmbH and Co KG
Original Assignee
Wirtgen GmbH
Betek Bergbau und Hartmetalltechnik Karl Heinz Simon GmbH and Co KG DE
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Publication of EP0706606A1 publication Critical patent/EP0706606A1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/19—Means for fixing picks or holders
    • E21C35/193—Means for fixing picks or holders using bolts as main fixing elements
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/19—Means for fixing picks or holders
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/19—Means for fixing picks or holders
    • E21C35/191—Means for fixing picks or holders for fixing holders

Definitions

  • Cutting tool which can be fastened on a roller-shaped cutting body of a cutting machine, which has a base part and a bit holder, the bit holder is provided with a plug-in attachment which is held in a plug-in receptacle of the base part and the bit holder has a stop face which is flat against a stop of the base part.
  • Such a cutting body is known from DE 92 11 739 U1.
  • the chisel holder is inserted with a plug-in attachment into the plug-in receptacle of the base part, the plug-in receptacle being inclined forward in the running direction of the cutting body, so that the plug-in attachment is inserted into the base part.
  • a shoulder arranged behind the plug-in projection in the running direction of the cutting body and running perpendicular to the axis of the bit holder serves to support a support surface of the bit holder.
  • An edge is formed between the shoulder and the plug receptacle, which exerts a high edge pressure on the transition region between the plug-in attachment and the support surface of the bit holder during the milling process.
  • the impulse-like loads occurring in cutting machines lead to alternating voltages, which quickly lead to material fatigue of the bit holder in the area of the edge, so that the plug-in attachment breaks off and the bit holder detaches from the base part.
  • AU-A-3 359 071 describes a chisel holder on which a chisel can be fixed.
  • the chisel holder has a plug receptacle into which a plug attachment of the chisel can be inserted.
  • a stop is connected at an angle to the plug-in receptacle, forming an edge.
  • the stop is arranged in the direction of the plug receptacle.
  • a counter surface is connected to the plug attachment of the chisel.
  • the counter surface is also angularly arranged to form an edge to a plug-in approach.
  • the base part Has paragraph which is arranged around the plug-in receptacle and which is arranged at a distance from the bit holder in this area, and that the paragraph forms an obtuse-angled receptacle for the bit holder together with the stop.
  • the chisel holder is thus supported flatly on the stop.
  • the stop is inclined with respect to the shoulder, so that a force which is favorable for the material stress of the base part is possible. Because the chisel holder is spaced apart in the area around the plug receptacle, the entire force absorbed by the chisel is introduced into the shoulder. The plug-in attachment is kept free from loads.
  • the shoulder and the stop form an obtuse-angled receptacle for the chisel holder.
  • the force introduced via the chisel is thus broken down into a force component acting radially and tangentially to the roller-shaped cutting body.
  • the angle can be dimensioned such that an optimal force distribution can be achieved.
  • a preferred embodiment of the cutting body is characterized in that the angle is approximately 120 ° to 130 °.
  • the cutting body can be used for fine machining of surfaces.
  • a road surface should be leveled
  • the chisel receptacles are arranged adjacent to one another in the axial direction of the cutting body. This enables fine processing of the road surface. Subsequent finishing of the milled surface is then no longer necessary because of the high surface sides that can be achieved.
  • a quick and easy replacement of the chisel is achieved in that a tool opening is made in the base part, which creates access to the end of the chisel holder of the chisel holder that supports the stop.
  • the plug-in receptacle of the base part has a prismatic guide which interacts with corresponding guide surfaces of the plug-in attachment of the chisel holder.
  • a base part 20 with an exchangeable bit holder 30 is shown in three views.
  • the cutting body has 10 pocket receptacles 27 on its cutting body surface, into which the base parts 20 are inserted with their base 26.
  • the insertion movement of the base part 20 into the pocket receptacle 27 is limited by means of a stop 24, which fixes the base part 20 on its front side.
  • a weld is provided for securely fastening the base part 20 to the cutting body.
  • the base part 20 has a plug-in receptacle 21 which is introduced into a shoulder 28 arranged approximately parallel to the running direction 60 of the cutting body.
  • a stop 32 is formed on the shoulder 28 at an obtuse angle in the running direction 60.
  • the chisel holder 30 is inserted with its plug-in projection 31 into the plug-in receptacle 21 of the base part 20.
  • a prism guide 25 is introduced, which serves to guide and receive guide surfaces 35 of the plug-in extension 31.
  • the insertion movement of the chisel holder 20 is limited by a stop surface facing the stop 32 of the base part 20.
  • a distance 36 is thus formed between the shoulder 28 of the base part 20 and the side of the bit holder 30 facing the shoulder 28, so that the bit holder 30 is supported only on the stop 32.
  • the plug-in extension 31 has in its rear region a V-shaped recess 37, one leg of which serves as a pressure surface 38 for a pressure screw 50.
  • the pressure screw 50 is screwed with its thread 53 into a thread receptacle of the base part 20 ', so that its pin 51 cooperates with the pressure surface 38.
  • a chisel receptacle 33 is introduced into the chisel holder 30 and serves as a plug receptacle for a shaft part of a chisel 40.
  • an annular contact surface 39 is formed, on which the chisel 40 is supported with a collar 41.
  • the chisel 40 is secured against axial lifting with a clamping sleeve, not shown in the drawing.
  • a tool opening 22 is introduced into the base part 20, which provides access to the end of the bit holder facing away from the bit head 42.
  • the chisel 40 can then be driven out of the chisel receptacle 33 from the back of the base part 20 using a mandrel and a hammer.
  • the pressure screw 50 is designed as a headless grub screw, so that it does not protrude into the tool opening 22 and thus does not affect the tool change.
  • a tool holder 52 is inserted into the end face of the pressure screw 50, for example for holding an Allen key or a gate key.
  • the base parts are fastened in a row on the cutting body surface 10.
  • a base part 20 with its front joint 71 on a rear Butt joint 72 of a further base part 20 is set and fastened on the cutting body.
  • the base part 20 is welded to the cutting body surface 10. But it is also conceivable to provide a screw connection.

Abstract

PCT No. PCT/EP94/02164 Sec. 371 Date Jul. 8, 1996 Sec. 102(e) Date Jul. 8, 1996 PCT Filed Jul. 1, 1994 PCT Pub. No. WO95/02112 PCT Pub. Date Jan. 19, 1995A cylindrical cutting element for a cutting machine which includes base parts arranged at a uniform distance from each other. A chisel holder which receives an exchangeable chisel is secured with respect to each base element. The chisel holder has a plug connector which allows the chisel holder to be inserted into a plug receiver of the base element, where it is held by a pressure screw on the base part that grips the plug connector. To relieve the plug connector from the forces acting on the chisel, the base part has a projection which extends in an approximately parallel direction to the running direction of the cutting element and a stop that follows the projection in the running direction and forms an angle therewith. The stop limits the insertion of the chisel holder into the base element and absorbs forces transmitted through the chisel to the chisel holder.

Description

Schrämwerkzeug, das auf einem walzenförmigen Schneidkörper einer Schrämmaschine befestigbar ist, das ein Basisteil und einen Meißelhalter aufweist, wobei der Meißelhalter mit einem Steckansatz versehen ist, der in einer Steckaufnahme des Basisteils gehalten ist und wobei der Meißelhalter eine Anschlagfläche aufweist, die flächig an einem Anschlag des Basisteils anliegt.Cutting tool, which can be fastened on a roller-shaped cutting body of a cutting machine, which has a base part and a bit holder, the bit holder is provided with a plug-in attachment which is held in a plug-in receptacle of the base part and the bit holder has a stop face which is flat against a stop of the base part.

Ein derartiger Schneidkörper ist aus der DE 92 11 739 U1 bekannt. Der Meißelhalter ist mit einem Steckansatz in die Steckaufnahme des Basisteils eingeführt, wobei die Steckaufnahme in Laufrichtung des Schneidkörpers nach vorne geneigt ist, so daß der Steckansatz in das Basisteil eingesetzt ist. Ein in Laufrichtung des Schenidkörpers hinter dem Steckansatz angeordneter, senkrecht zur Achse der Meißelaufnahme verlaufender Absatz dient zur Abstützung einer Stützfläche des Meißelhalters. Zwischen dem Absatz und der Steckaufnahme ist eine Kante gebildet, die während des Fräsvorganges eine hohe Kantenpressung auf den Übergangsbereich zwischen dem Steckansatz und der Stützfläche des Meißelhalters ausübt. Die bei Schrämmaschinen auftretenden, impulsartigen Belastungen führen zu Wechselspannungen, die schnell zu einer Materialermüdung des Meißelhalters im Bereich der Kante führen, so daß der Steckansatz abbricht und der Meißelhalter sich vom Basisteil löst.Such a cutting body is known from DE 92 11 739 U1. The chisel holder is inserted with a plug-in attachment into the plug-in receptacle of the base part, the plug-in receptacle being inclined forward in the running direction of the cutting body, so that the plug-in attachment is inserted into the base part. A shoulder arranged behind the plug-in projection in the running direction of the cutting body and running perpendicular to the axis of the bit holder serves to support a support surface of the bit holder. An edge is formed between the shoulder and the plug receptacle, which exerts a high edge pressure on the transition region between the plug-in attachment and the support surface of the bit holder during the milling process. The impulse-like loads occurring in cutting machines lead to alternating voltages, which quickly lead to material fatigue of the bit holder in the area of the edge, so that the plug-in attachment breaks off and the bit holder detaches from the base part.

Dadurch ist die Lebensdauer einer solchen Schrämmaschine sehr stark eingeschränkt, so daß mit Reparatur- und Ausfallzeiten hohe Kosten entstehend. In der AU-A-3 359 071 ist ein Meißelhalter beschrieben, an dem ein Meißel festlegabar ist. Hierzu weist der Meißelhalter eine Steckaufnahme auf, in die ein Steckansatz des Meißels einsetzbar ist. An die Steckaufnahme schließt sich winklig unter Bildung einer Kante ein Anschlag an. Der Anschlag ist in Laufrichtung der Steckaufnahme angeordnet. Entsprechend dem Anschlag ist an dem Steckansatz des Meißels eine Gegenfläche angeschlossen. Die Gegenfläche ist ebenfalls unter Bildung einer Kante zu einem Steckansatz winklig angeordnet. Im eingesetzten Zustand des Meißels in dem Meißelhalter liegen die Kanten der Steckaufnahme und des Steckansatzes aneinander.As a result, the service life of such a cutting machine is very severely limited, so that high costs are incurred with repair and downtimes. AU-A-3 359 071 describes a chisel holder on which a chisel can be fixed. For this purpose, the chisel holder has a plug receptacle into which a plug attachment of the chisel can be inserted. A stop is connected at an angle to the plug-in receptacle, forming an edge. The stop is arranged in the direction of the plug receptacle. Corresponding to the stop, a counter surface is connected to the plug attachment of the chisel. The counter surface is also angularly arranged to form an edge to a plug-in approach. When the chisel is inserted in the chisel holder, the edges of the plug-in receptacle and the plug-in attachment lie against one another.

Dies erweist sich als nachteilig, da im Arbeitseinsatz stoßartige Belastungen auf den Meißel einwirken. Diese stoßartigen Belastungen führen aufgrund der hohen Spannungen, die typischerweise im Bereich der aneinanderliegenden Kanten auftreten, zur Materialermüdung. Damit wird ein vorzeitiger Verschleiß des Meißels bzw. des Meißelhalters bewirkt. Der Ausfall der Meißelhaltung und der dadurch verbundene notwendige Austausch ist aufwendig, da die auf einer Schrämwalze festgeschweißte Meißelhalterung wieder aufgeschweißt werden muß.This proves to be disadvantageous, since impact-like loads act on the chisel during work. Due to the high stresses that typically occur in the area of the adjacent edges, these shock-like loads lead to material fatigue. This causes premature wear of the chisel or chisel holder. The failure of the chisel holder and the associated necessary replacement is complex because the chisel holder welded onto a cutting roller has to be welded on again.

Es ist Aufgabe der Erfindung einen Schneidkörper für eine Schrämmaschine der eingangs erwähnten Art zu schaffen, bei dem der Meißelhalter ohne Bruchgefahr des Steckansatzes im Basisteil abgestützt und gehalten ist.It is an object of the invention to provide a cutting body for a cutting machine of the type mentioned at the outset, in which the bit holder is supported and held in the base part without the risk of the plug-in attachment breaking.

Diese Aufgabe der Erfindung wird mit den im neuen Patentanspruch angegebenen Merkmalen gelöst. Demgemäß ist es also vorgesehen, daß das Basisteil einen Absatz aufweist, der um die Steckaufnahme angeordnet ist und der gegenüber dem Meißelhalter in diesem Bereich beabstandet angeordnet ist, und daß der Absatz zusammen mit dem Anschlag eine stumpfwinklige Aufnahme für den Meißelhalter bildet.This object of the invention is achieved with the features specified in the new patent claim. Accordingly, it is provided that the base part Has paragraph, which is arranged around the plug-in receptacle and which is arranged at a distance from the bit holder in this area, and that the paragraph forms an obtuse-angled receptacle for the bit holder together with the stop.

Damit stützt sich der Meißelhalter flächig an dem Anschlag ab. Abhängig von der Krafteinleitungsrichtung ist der Anschlag gegenüber dem Absatz geneigt, so daß eine für die Materialbeanspruchung des Basisteils günstige Krafteinbringung möglich ist. Dadurch, daß der Meißelhalter im Bereich um die Steckaufnahme beabstandet angeodnet ist, wird die gesamte über den Meißel aufgenommene Kraft in den Absatz eingeleitet. Der Steckansatz ist von Belastungen freigehalten.The chisel holder is thus supported flatly on the stop. Depending on the direction in which the force is applied, the stop is inclined with respect to the shoulder, so that a force which is favorable for the material stress of the base part is possible. Because the chisel holder is spaced apart in the area around the plug receptacle, the entire force absorbed by the chisel is introduced into the shoulder. The plug-in attachment is kept free from loads.

Eine Beschädigung der Steckaufnahme des Basisteils ist somit ausgeschlossen. Bei einem solchen Schrämwerkzeug ist die Lebensdauer erheblich gesteigert.Damage to the socket of the base part is therefore excluded. The lifespan of such a cutting tool is significantly increased.

Nach einer vorteilhaften Ausgestaltung ist vorgesehen, daß der Absatz und der Anschlag eine stumpfwinklige Aufnahme für den Meißelhalter bildet. Damit wird die über den Meißel eingeleitete Kraft in eine radial und eine tangential zum walzenförmigen Schneidkörper wirkende Kraftkomponente zerlegt. Hierbei läßt sich der Winkel je nach Richtung der einwirkenden Kraft so dimensionieren, daß eine optimale Kraftverteilung erzielbar ist.According to an advantageous embodiment, it is provided that the shoulder and the stop form an obtuse-angled receptacle for the chisel holder. The force introduced via the chisel is thus broken down into a force component acting radially and tangentially to the roller-shaped cutting body. Depending on the direction of the force acting, the angle can be dimensioned such that an optimal force distribution can be achieved.

Eine bevorzugte Ausgestaltung des Schneidkörpers ist dadurch gekennzeichnet, daß der Winkel etwa 120° bis 130° beträgt.A preferred embodiment of the cutting body is characterized in that the angle is approximately 120 ° to 130 °.

Ist vorgesehen, daß der Meißelhalter mindestens zwei Meißelaufnahmen aufweist, dann kann mit dem Schneidkörper eine Feinbearbeitung von Oberflächen durchgeführt werden.If it is provided that the chisel holder has at least two chisel receptacles, then the cutting body can be used for fine machining of surfaces.

Ist beispielsweise vorgesehen, daß ein Straßenbelag nivelliert werden soll, so ist es vorteilhaft, daß die Meißelaufnahmen in Achsrichtung des Schneidkörpers im Abstand nebeneinanderliegend angeordnet sind. Damit ist eine Feinbearbeitung des Straßenbelages möglich. Eine anschließende Nachbearbeitung der gefrästen Fläche ist wegen der erreichbaren hohen Oberflächenseiten dann nicht mehr notwendig.If, for example, it is provided that a road surface should be leveled, it is advantageous that the chisel receptacles are arranged adjacent to one another in the axial direction of the cutting body. This enables fine processing of the road surface. Subsequent finishing of the milled surface is then no longer necessary because of the high surface sides that can be achieved.

Eine schnelle und einfache Auswechslung des Meißels wird dadurch erreicht, daß in das Basisteil eine Werkzeugöffnung eingebracht ist, die Zugang zu dem am Anschlag abstützenden Ende der Meißelaufnahme des Meißelhalters schafft.A quick and easy replacement of the chisel is achieved in that a tool opening is made in the base part, which creates access to the end of the chisel holder of the chisel holder that supports the stop.

Ist vorgesehen, daß die dem Absatz des Basisteils zugekehrte Seite der Meißelhalterung bei eingeführtem Steckansatz zu dem Absatz beabstandet ist, dann ist sichergestellt, daß die über den Meißel eingeleitete Kraft vollständig auf den Anschlag übertragen wird.If it is provided that the side of the chisel holder facing the shoulder of the base part is spaced from the shoulder when the plug-in attachment is inserted, then it is ensured that the force introduced via the chisel is transmitted completely to the stop.

Damit der Meißelhalter sicher am Basisteil fixiert ist, ist vorgesehen, daß die Steckaufnahme des Basisteils eine Prismenführung aufweist, die mit entsprechenden Führungsflächen des Steckansatzes des Meißelhalters zusammenwirkt.So that the chisel holder is securely fixed to the base part, it is provided that the plug-in receptacle of the base part has a prismatic guide which interacts with corresponding guide surfaces of the plug-in attachment of the chisel holder.

Die Erfindung wird im folgenden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels eines Schneidkörpers näher erläutert.The invention is explained below with reference to an embodiment of a cutting body shown in the drawing.

In der Zeichnung ist ein Basisteil 20 mit einem auswechselbaren Meißelhalter 30 in drei Ansichten dargestellt. Der Schneidkörper weist an seiner Schneidkörperoberfläche 10 Taschenaufnahmen 27 auf, in die die Basisteile 20 mit ihrem Fuß 26 eingesetzt sind. Die Einschubbewegung des Basisteils 20 in die Taschenaufnahme 27 ist mittels eines Anschlages 24, der das Basisteil 20 an seiner Vorderseite festlegt, begrenzt. Zur sicheren Befestigung des Basisteils 20 an dem Schneidkörper ist eine Schweißung vorgesehen. Das Basisteil 20 weist eine Steckaufnahme 21 auf, die in einen etwa parallel zu der Laufrichtung 60 des Schneidkörpers angeordneten Absatz 28 eingebracht ist. An dem Basisteil 20 ist in Laufrichtung 60 hinten ein Anschlag 32 stumpfwinklig an dem Absatz 28 angeformt. Der Meißelhalter 30 ist mit seinem Steckansatz 31 in die Steckaufnahme 21 des Basisteils 20 eingeführt. An der Vorderseite der Steckaufnahme 21 ist eine Prismenführung 25 eingebracht, die zur Führung und Aufnahme von Führungsflächen 35 des Steckansatzes 31 dient. Die Einschubbewegung des Meißelhalters 20 ist mit einer dem Anschlag 32 des Basisteils 20 zugekehrten Anschlagfläche begrenzt. Damit ist zwischen dem Absatz 28 des Basisteils 20 und der dem Absatz 28 zugekehrten Seite des Meißelhalters 30 ein Abstand 36 gebildet, so daß sich der Meißelhalter 30 nur an dem Anschlag 32 abstützt.In the drawing, a base part 20 with an exchangeable bit holder 30 is shown in three views. The cutting body has 10 pocket receptacles 27 on its cutting body surface, into which the base parts 20 are inserted with their base 26. The insertion movement of the base part 20 into the pocket receptacle 27 is limited by means of a stop 24, which fixes the base part 20 on its front side. A weld is provided for securely fastening the base part 20 to the cutting body. The base part 20 has a plug-in receptacle 21 which is introduced into a shoulder 28 arranged approximately parallel to the running direction 60 of the cutting body. On the base part 20, a stop 32 is formed on the shoulder 28 at an obtuse angle in the running direction 60. The chisel holder 30 is inserted with its plug-in projection 31 into the plug-in receptacle 21 of the base part 20. On the front of the plug-in receptacle 21, a prism guide 25 is introduced, which serves to guide and receive guide surfaces 35 of the plug-in extension 31. The insertion movement of the chisel holder 20 is limited by a stop surface facing the stop 32 of the base part 20. A distance 36 is thus formed between the shoulder 28 of the base part 20 and the side of the bit holder 30 facing the shoulder 28, so that the bit holder 30 is supported only on the stop 32.

Der Steckansatz 31 weist in seinem hinteren Bereich eine V-förmige Ausnehmung 37 auf, deren einer Schenkel als Druckfläche 38 für eine Druckschraube 50 dient. Die Druckschraube 50 ist mit ihrem Gewinde 53 in eine Gewindeaufnahme des Basisteils 20' eingeschraubt, so daß ihr Zapfen 51 mit der Druckfläche 38 zusammenwirkt. Beim Anziehen der Druckschraube 50 wird der Steckansatz 31 in die Steckaufnahme 21 eingezogen und gleichzeitig in die vorderseitige Prismenführung 25 gedrückt. In den Meißelhalter 30 ist eine Meißelaufnahme 33 eingebracht, die als Steckaufnahme für einen Schaftteil eines Meißels 40 dient. An der dem Meißelkopf 42 zugewandten Seite der Meißelaufnahme 33 ist eine ringförmige Anlagefläche 39 ausgebildet, auf der sich der Meißel 40 mit einem Bund 41 abstützt. Der Meißel 40 ist gegen axiales Ausheben mit einer, in der Zeichnung nicht dargestellten Spannhülse gesichert. An dem der Anlagefläche 30 abgekehrten Ende der Meißelaufnahme 33 ist eine Werkzeugöffnung 22 in das Basisteil 20 eingebracht, die Zugang zu dem dem Meißelkopf 42 abgekehrten Ende des Meißelhalters verschafft. Mit einem Dorn und einem Hammer kann dann von der Rückseite des Basisteils 20 der Meißel 40 aus der Meißelaufnahme 33 ausgetrieben werden. Die Druckschraube 50 ist als kopflose Madenschraube ausgebildet, so daß sie nicht in die Werkzeugöffnung 22 ragt und somit den Werkzeugwechsel nicht beeinträchtigt. In die Stirnseite der Druckschraube 50 ist eine Werkzeugaufnahme 52 beispielsweise zur Aufnahme eines Innensechskant- oder eines Torseschlüssels eingebracht.The plug-in extension 31 has in its rear region a V-shaped recess 37, one leg of which serves as a pressure surface 38 for a pressure screw 50. The pressure screw 50 is screwed with its thread 53 into a thread receptacle of the base part 20 ', so that its pin 51 cooperates with the pressure surface 38. When the pressure screw 50 is tightened, the plug-in projection 31 is drawn into the plug-in receptacle 21 and at the same time pressed into the front prism guide 25. A chisel receptacle 33 is introduced into the chisel holder 30 and serves as a plug receptacle for a shaft part of a chisel 40. On the side of the chisel holder 33 facing the chisel head 42, an annular contact surface 39 is formed, on which the chisel 40 is supported with a collar 41. The chisel 40 is secured against axial lifting with a clamping sleeve, not shown in the drawing. At the end of the bit holder 33 facing away from the contact surface 30, a tool opening 22 is introduced into the base part 20, which provides access to the end of the bit holder facing away from the bit head 42. The chisel 40 can then be driven out of the chisel receptacle 33 from the back of the base part 20 using a mandrel and a hammer. The pressure screw 50 is designed as a headless grub screw, so that it does not protrude into the tool opening 22 and thus does not affect the tool change. A tool holder 52 is inserted into the end face of the pressure screw 50, for example for holding an Allen key or a gate key.

Zur Ausbildung einer Räum-Ladeschnecke bzw. einer Räumwendel sind die Basisteile auf der Schneidkörperoberfläche 10 aneinandergereiht befestigt. Hierbei wird ein Basisteil 20 mit seiner vorderseitigen Stoßstelle 71 an eine rückseitige Stoßstelle 72 eines weiteren Basisteils 20 gesetzt und auf dem Schneidkörper befestigt.To form a broaching auger or a broach, the base parts are fastened in a row on the cutting body surface 10. Here, a base part 20 with its front joint 71 on a rear Butt joint 72 of a further base part 20 is set and fastened on the cutting body.

In dem Ausführungsbeispiel ist das Basisteil 20 mit der Schneidkörperoberfläche 10 verschweißt. Es ist aber auch denkbar, eine Verschraubung vorzusehen.In the exemplary embodiment, the base part 20 is welded to the cutting body surface 10. But it is also conceivable to provide a screw connection.

Claims (8)

  1. Cutter tool attachable to a roller-shaped cutter member of a cutting machine, having a base portion (20) and a chisel holder (30), the chisel holder (30) being provided with a plug-in fitting (31) which is held in a plug-in housing (21) of the base portion (20), and the chisel holder having a stop surface which abuts in planar fashion on a stop surface (32) of the base portion (20),
    characterised in that
    the base portion (20) has a shoulder (28) which is disposed around the plug-in housing (21) and is spaced apart from the chisel holder (30) in this area, and
    in that the shoulder (28) forms together with the stop surface (32) an obtuse-angled receiving means for the chisel holder (30), the stop surface (32) being disposed in the direction of travel of the cutter head behind the shoulder (28).
  2. Cutter member according to claim 1,
    characterised in that
    the shoulder (28) and the stop surface (32) form an obtuse-angled receiving means for the chisel holder (30).
  3. Cutter member according to claim 2,
    characterised in that
    the angle comes to approximately 120° to 130°.
  4. Cutter member according to one of claims 1 to 3,
    characterised in that
    the chisel holder (30) has at least two chisel receiving means (33).
  5. Cutter member according to claim 4,
    characterised in that
    the chisel receiving means (33) are disposed adjacent to one another and spaced apart in the axial direction of the cutter member.
  6. Cutter member according to claim 5,
    characterised in that
    the spacing between the chisel receiving means (33) comes to approximately 45 mm.
  7. Cutter member according to one of claims 1 to 6,
    characterised in that
    there is produced in the base portion (20) a tool aperture (22) which provides access to the end of the chisel receiving means (33) of the chisel holder (30) supported on the stop surface (32).
  8. Cutter member according to one of claims 1 to 7,
    characterised in that
    the plug-in housing (21) of the base portion (20) has a prismatic guide (25) which operates in conjunction with corresponding guide surfaces (35) of the plug-in fitting (31) of the chisel holder (30).
EP94924221A 1993-07-06 1994-07-01 Cutting element for a coal cutting machine Expired - Lifetime EP0706606B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4322401A DE4322401C2 (en) 1993-07-06 1993-07-06 Attachment of a cutting tool to a cutting body
DE4322401 1993-07-06
PCT/EP1994/002164 WO1995002112A1 (en) 1993-07-06 1994-07-01 Cutting element for a coal cutting machine

Publications (2)

Publication Number Publication Date
EP0706606A1 EP0706606A1 (en) 1996-04-17
EP0706606B1 true EP0706606B1 (en) 1997-03-05

Family

ID=6492035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94924221A Expired - Lifetime EP0706606B1 (en) 1993-07-06 1994-07-01 Cutting element for a coal cutting machine

Country Status (7)

Country Link
US (1) US5683144A (en)
EP (1) EP0706606B1 (en)
AT (1) ATE149630T1 (en)
DE (2) DE4322401C2 (en)
DK (1) DK0706606T3 (en)
HK (1) HK1006324A1 (en)
WO (1) WO1995002112A1 (en)

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US9151157B2 (en) 2010-12-03 2015-10-06 Wirtgen Gmbh Chisel holder
US9163502B2 (en) 2010-12-03 2015-10-20 Wirtgen Gmbh Chisel holder, and chisel holder system comprising a chisel holder and a base part
US9228434B2 (en) 2010-12-03 2016-01-05 Wirtgen Gmbh Chisel holder
US9260965B2 (en) 2011-07-04 2016-02-16 Wirtgen Gmbh Chisel holder for a soil treatment machine
US9267373B2 (en) 2010-12-03 2016-02-23 Wirtgen Gmbh Chisel holder and lower tool part for a chisel holder
US9376911B2 (en) 2010-12-03 2016-06-28 Wirtgen Gmbh Chisel holder, and chisel holder system comprising a chisel holder and a base part

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DE19908656C1 (en) 1999-02-27 2000-08-31 Wirtgen Gmbh Chisel holder changing system
US6331035B1 (en) 1999-03-19 2001-12-18 Kennametal Pc Inc. Cutting tool holder assembly with press fit
US6234579B1 (en) 1999-04-07 2001-05-22 Kennametal Pc Inc. Cutting tool holder retention assembly
US6220671B1 (en) 1999-07-09 2001-04-24 Kennametal Pc Inc. Cutting tool holder retention system
DE10221764C1 (en) * 2002-05-15 2003-11-27 Wirtgen Gmbh Holder for shaft chisel in milling machine has upper part with seating for shaft chisel secured to base part with clamp screw and clamp element for securing chisel shaft
DE10261159C5 (en) * 2002-12-20 2010-11-11 Andreas Lemm toolholders
DE10261646B4 (en) 2002-12-27 2010-02-25 Wirtgen Gmbh Schrämwerkzeug
DE102004030691B4 (en) * 2004-06-24 2008-12-18 Wirtgen Gmbh Tool-holding device
DE102004057302B4 (en) * 2004-11-26 2011-01-13 Wirtgen Gmbh toolholders
DE102005003734B3 (en) 2005-01-26 2006-02-16 Wirtgen Gmbh Lathe tool holder socket is surrounded by a block that translates via a stress-relief groove to an angled side-extension
DE202007018885U1 (en) * 2007-10-29 2009-09-17 Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg shank bits
DE102009049780B4 (en) 2009-10-19 2016-02-18 Betek Gmbh & Co. Kg Chisel, in particular round shank chisel
AU2012233012B2 (en) * 2009-12-17 2014-07-31 Wirtgen Gmbh Bit holder and base part for receiving a bit holder
DE102009059189A1 (en) 2009-12-17 2011-06-22 Wirtgen GmbH, 53578 Chisel holder and base part for holding a chisel holder
DE202009014880U1 (en) 2009-12-17 2011-04-28 Wirtgen Gmbh Chisel holder and base part for holding a chisel holder
DE102009059188A1 (en) 2009-12-17 2011-06-22 Wirtgen GmbH, 53578 Chisel holder and base part
US9028009B2 (en) 2010-01-20 2015-05-12 Element Six Gmbh Pick tool and method for making same
DE102011051523A1 (en) 2011-07-04 2013-01-10 Wirtgen Gmbh Chisel holder for soil cultivation machine, particularly road milling machine, has supporting body to which plug-in attachment is indirectly or directly connected at plug-in attachment end
USD667856S1 (en) 2011-04-11 2012-09-25 Betek Gmbh & Co. Kg Chisel holder
USD667855S1 (en) 2011-04-11 2012-09-25 Betek Gmbh & Co. Kg Base for a chisel holder
USD666641S1 (en) 2011-07-04 2012-09-04 Wirtgen Gmbh Chisel holder
PL2543814T3 (en) 2011-07-04 2018-02-28 Wirtgen Gmbh Chisel holder and chisel holder system with a chisel holder and a base section
GB201113591D0 (en) 2011-08-08 2011-09-21 Hydra Mining Tools Internat Ltd Mineral cutter tool
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DE102016125921A1 (en) * 2016-12-30 2018-07-05 Wirtgen Gmbh Tool combination with a chisel holder and two chisels
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Cited By (10)

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Publication number Priority date Publication date Assignee Title
US9151157B2 (en) 2010-12-03 2015-10-06 Wirtgen Gmbh Chisel holder
US9163502B2 (en) 2010-12-03 2015-10-20 Wirtgen Gmbh Chisel holder, and chisel holder system comprising a chisel holder and a base part
US9228434B2 (en) 2010-12-03 2016-01-05 Wirtgen Gmbh Chisel holder
US9267373B2 (en) 2010-12-03 2016-02-23 Wirtgen Gmbh Chisel holder and lower tool part for a chisel holder
US9376911B2 (en) 2010-12-03 2016-06-28 Wirtgen Gmbh Chisel holder, and chisel holder system comprising a chisel holder and a base part
US9719348B2 (en) 2010-12-03 2017-08-01 Wirtgen Gmbh Chisel holder
US9765620B2 (en) 2010-12-03 2017-09-19 Wirtgen Gmbh Chisel holder
US9260965B2 (en) 2011-07-04 2016-02-16 Wirtgen Gmbh Chisel holder for a soil treatment machine
US9739145B2 (en) 2011-07-04 2017-08-22 Wirtgen Gmbh Chisel holder for a soil treatment machine
US10208593B2 (en) 2011-07-04 2019-02-19 Wirtgen Gmbh Chisel holder for a soil treatment machine

Also Published As

Publication number Publication date
DE59401971D1 (en) 1997-04-10
DE4322401C2 (en) 1996-06-20
WO1995002112A1 (en) 1995-01-19
US5683144A (en) 1997-11-04
DE4322401A1 (en) 1995-01-12
ATE149630T1 (en) 1997-03-15
DK0706606T3 (en) 1997-09-01
HK1006324A1 (en) 1999-02-19
EP0706606A1 (en) 1996-04-17

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