EP1433923B1 - Pick holder - Google Patents

Pick holder Download PDF

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Publication number
EP1433923B1
EP1433923B1 EP03029128A EP03029128A EP1433923B1 EP 1433923 B1 EP1433923 B1 EP 1433923B1 EP 03029128 A EP03029128 A EP 03029128A EP 03029128 A EP03029128 A EP 03029128A EP 1433923 B1 EP1433923 B1 EP 1433923B1
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EP
European Patent Office
Prior art keywords
plug
extension
longitudinal axis
pick
clamping device
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
Application number
EP03029128A
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German (de)
French (fr)
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EP1433923A1 (en
Inventor
Andreas Lemm
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Individual
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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 OR ROCK 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

  • the invention relates to a bit holder according to the preamble of claim 1.
  • a bit holder is known for example from DE 43 22 401 C2.
  • the invention has for its object to provide a fixable in a socket chisel holder, which is characterized by a particularly good handling, in particular a particularly easy solubility from the plug-in receptacle, specify.
  • the bit holder has a split along a dividing surface plug-in projection for insertion into a socket of a base part.
  • the dividing surface is substantially parallel to the longitudinal axis of the plug-in approach, preferably the longitudinal axis cutting or at least only slightly, compared to the diameter of the plug-in approach, spaced therefrom.
  • a clamping device is arranged, which comprises a likewise aligned in the direction of the longitudinal axis of the plug-in screw element for spreading the parts of the plug-neck forming plug projection segments in the socket.
  • the bit holder further has one provided for receiving a chisel Holding approach, which is connected to a designated plug-in main segment of the plug-in part, in particular materially connected.
  • the screw element in the insertion projection is preferably asymmetrical, namely arranged on the side of the division surface facing away from the insertion projection main segment.
  • the screw element is preferably a screw which exerts an axial force on two cone elements which expand the plug projection segments.
  • the screw element may for example also be designed as an eccentric element.
  • the tip of the chisel inserted into the holding lug of the chisel holder cuts the longitudinal axis of the insertion lug and thus also the longitudinal axis of the plug-in receptacle. This ensures in a simple manner that a force acting on the bit tip force exerts no torque on the bit holder, which rotates this about the longitudinal axis. An additional anti-rotation between the plug and the socket is not required.
  • Fig. 1 shows a bit holder 1 for a chisel holder changing system, for example a road milling machine, a cutting machine or a mining machine.
  • the Chisel holder 1 has a plug neck 2 for fixing in a plug-in receptacle (not shown) of a base part and a retaining lug 3 for holding a chisel 4 with a chisel tip 5.
  • a longitudinal axis A intersects the chisel tip 5.
  • the longitudinal axis A is further in a plane perpendicular to the plane shown dividing surface E, which cuts through the plug neck 2 and in the embodiment with a median plane ME within the socket and the Plug neck 2 is identical.
  • the plug neck segments 6,7 are spread by a clamping device 8 in the plug receptacle.
  • the clamping device 8 comprises, in addition to the plug approach sub-segment 7, as shown in particular in FIG. 2, a screw 9 with a screw head 10, a screw head 10 facing clamping cone 11 and a threaded cone 12.
  • the screw 9 is connected by a between the clamping cone 11th and the threaded cone 12 arranged guide 13 is passed to the plug approach sub-segment 7.
  • the plug projection segments 6, 7 each have a cylindrical surface region 14, a lower cone region 15 and an upper cone region 16. At the lower cone portion 15, a bulge 17 is provided for cooperation with a rotation, not shown, in the plug-in receptacle.
  • the plug-in approach 2 is thus designed overall so that it is compatible with plug-in receptacles for conventional bit holder with one-piece plug lugs.
  • the clamping cone 11 (without thread) and the thread cone 12 (with thread) are clamped axially such that the insertion segments 6.7, leaving a gap of about 2-3 mm width in the region of the division surface E frictionally pressed against the wall of the plug-in receptacle become.
  • the connection between the plug-in receptacle and the bit holder 1 is insensitive to both dimensional inaccuracies of the parts to be joined and against contamination.
  • the multi-part design of the plug-in approach 2 also has the advantage that when worn individual parts only the respective affected parts are replaced.
  • the removal of the chisel holder 1 from the plug-in takes place in the following manner:
  • the screw 9 is loosened, so that the screw head 10 lifts something from the clamping cone 11.
  • the screw 9 is still engaged with the thread of the threaded cone 12.
  • the threaded cone 12 is now displaced downwards, so that the clamping between the plug-in main segment 6 and the plug-side sub-segment 7 is released.
  • the chisel holder 1 can then be removed without tools from the plug receptacle. Even with a tearing off the screw 9, the bit holder 1 can be easily removed from the plug receptacle.
  • 3a-c and 4a-c show in various views in detail the clamping cone 11 and the threaded cone 12.
  • the clamping cone 11 has a smooth bore 18, while the comparatively small-sized threaded cone 12 has a threaded bore 19.
  • An abutment surface 20 of the clamping cone 11 and a contact surface 21 of the threaded cone 12 are provided for abutment with the plug-in main segment 6 and, based on Fig. 2, which shows the clamping device 8 in a tensioned state, slightly to the left of the longitudinal axis A, resulting in the Gap between the plug neck segments 6,7 results.
  • the clamping cone 11 has two flank parts 22, between which the screw head 10 is located.
  • the screw head 10 can be protected by a cover, not shown, against contamination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Road Repair (AREA)
  • Disintegrating Or Milling (AREA)
  • Dicing (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)

Abstract

The chisel tooth holder for a road cutter has a holding insert (3) to receive a tooth (4) and an axially extending insertion plug (2) for fixing in the receiver of a tool head. The plug section has a partial surface (E) extending in the direction of the longitudinal axis (A). Between the main plug body (6) and a secondary segment (7) is a wedging screw (10) which expands a part of the plug to give a clamping action.

Description

Die Erfindung betrifft einen Meißelhalter nach dem Oberbegriff des Anspruchs 1. Ein derartiger Meißelhalter ist beispielsweise aus der DE 43 22 401 C2 bekannt.The invention relates to a bit holder according to the preamble of claim 1. Such a bit holder is known for example from DE 43 22 401 C2.

Bei dem aus der DE 43 22 401 C2 bekannten Meißelhalter für ein Schrämwerkzeug ist ein zapfenförmiger Steckansatz in eine Steckaufnahme eines Basisteils einsteckbar. Der Steckansatz ist mittels einer schräg in die Steckaufnahme eindringenden Schraube in der Steckaufnahme festgeklemmt. Aufgrund der hohen, beim Betrieb des Schrämwerkzeugs auftretenden mechanischen Belastungen besteht das Risiko, dass sich der Steckansatz derart in der Steckaufnahme verkeilt, dass der Meißelhalter nur schwer wieder aus der Steckaufnahme lösbar ist. Das Dokument EP 1 043 478 beschreibt einen weiteren Meißelhalter.In the known from DE 43 22 401 C2 bit holder for a cutting tool a pin-shaped plug-in approach in a socket of a base part can be inserted. The plug-in approach is clamped by means of an obliquely penetrating into the plug-in screw in the socket. Due to the high, occurring during operation of the Schrämwerkzeugs mechanical loads there is a risk that the plug-in approach wedged in the socket so that the bit holder is difficult to solve again from the plug receptacle. Document EP 1 043 478 describes another bit holder.

Der Erfindung liegt die Aufgabe zugrunde, einen in einer Steckaufnahme fixierbaren Meißelhalter, welcher sich durch eine besonders gute Handhabbarkeit, insbesondere eine besonders leichte Lösbarkeit aus der Steckaufnahme, auszeichnet, anzugeben.The invention has for its object to provide a fixable in a socket chisel holder, which is characterized by a particularly good handling, in particular a particularly easy solubility from the plug-in receptacle, specify.

Diese Aufgabe wird erfindungsgemäß gelöst durch einen Meißelhalter mit den Merkmalen des Anspruches 1. Hierbei weist der Meißelhalter einen längs einer Teilungsfläche geteilten Steckansatz zum Einstecken in eine Steckaufnahme eines Basisteils auf. Die Teilungsfläche verläuft im Wesentlichen parallel zur Längsachse des Steckansatzes, vorzugsweise die Längsachse schneidend oder zumindest nur gering, im Vergleich zum Durchmesser des Steckansatzes, von dieser beabstandet. Längs der Teilungsfläche, d.h. parallel zu dieser, ist eine Klemmvorrichtung angeordnet, welche ein ebenfalls in Richtung der Längsachse des Steckansatzes ausgerichtetes Schraubenelement zur Spreizung der Teile des Steckansatzes bildenden Steckansatzsegmente in der Steckaufnahme umfasst. Der Meißelhalter weist weiter einen zur Aufnahme eines Meißels vorgesehenen Halteansatz auf, welcher mit einem als Steckansatz-Hauptsegment bezeichneten Teil des Steckansatzes verbunden, insbesondere stofflich verbunden ist. Um das Steckansatz-Hauptsegment im Vergleich zu dem mindestens einen weiteren Steckansatzsegment möglichst groß dimensionieren zu können, ist das Schraubenelement im Steckansatz vorzugsweise asymmetrisch, nämlich auf der dem Steckansatz-Hauptsegment abgewandten Seite der Teilungsfläche angeordnet. Das Schraubenelement ist vorzugsweise eine Schraube, welche eine Axialkraft auf zwei die Steckansatzsegmente spreizende Konuselemente ausübt. Alternativ kann das Schraubenelement jedoch beispielsweise auch als Exzenterelement ausgebildet sein.This object is achieved by a bit holder with the features of claim 1. Here, the bit holder has a split along a dividing surface plug-in projection for insertion into a socket of a base part. The dividing surface is substantially parallel to the longitudinal axis of the plug-in approach, preferably the longitudinal axis cutting or at least only slightly, compared to the diameter of the plug-in approach, spaced therefrom. Along the dividing surface, ie parallel to this, a clamping device is arranged, which comprises a likewise aligned in the direction of the longitudinal axis of the plug-in screw element for spreading the parts of the plug-neck forming plug projection segments in the socket. The bit holder further has one provided for receiving a chisel Holding approach, which is connected to a designated plug-in main segment of the plug-in part, in particular materially connected. In order to be able to dimension the insertion projection main segment as large as possible in comparison to the at least one further insertion projection segment, the screw element in the insertion projection is preferably asymmetrical, namely arranged on the side of the division surface facing away from the insertion projection main segment. The screw element is preferably a screw which exerts an axial force on two cone elements which expand the plug projection segments. Alternatively, however, the screw element may for example also be designed as an eccentric element.

Nach einer besonders bevorzugten Ausführungsform schneidet die Spitze des in den Halteansatz des Meißelhalters eingesetzten Meißels die Längsachse des Steckansatzes und damit auch die Längsachse der Steckaufnahme. Hierdurch ist auf einfache Weise sichergestellt, dass eine auf die Meißelspitze einwirkende Kraft kein Drehmoment auf den Meißelhalter ausübt, welches diesen um die Längsachse dreht. Eine zusätzliche Verdrehsicherung zwischen dem Steckansatz und der Steckaufnahme ist somit nicht erforderlich.According to a particularly preferred embodiment, the tip of the chisel inserted into the holding lug of the chisel holder cuts the longitudinal axis of the insertion lug and thus also the longitudinal axis of the plug-in receptacle. This ensures in a simple manner that a force acting on the bit tip force exerts no torque on the bit holder, which rotates this about the longitudinal axis. An additional anti-rotation between the plug and the socket is not required.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Hierin zeigen:

Fig. 1
einen Meißelhalter in einer geschnittenen Gesamtansicht,
Fig. 2
eine Klemmvorrichtung des Meißelhalters nach Fig. 1,
Fig. 3a-c
einen Klemmkonus der Klemmvorrichtung nach Fig. 2, und
Fig. 4a-c
einen Gewindekonus der Klemmvorrichtung nach Fig. 2.
An embodiment of the invention will be explained in more detail with reference to a drawing. Herein show:
Fig. 1
a chisel holder in a cut overall view,
Fig. 2
a clamping device of the chisel holder according to Fig. 1,
Fig. 3a-c
a clamping cone of the clamping device according to Fig. 2, and
Fig. 4a-c
a threaded cone of the clamping device according to FIG. 2.

Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.

Fig. 1 zeigt einen Meißelhalter 1 für ein Meißelhalterwechselsystem, beispielsweise einer Straßenfräse, einer Schrämmaschine oder einer Bergbaumaschine. Der Meißelhalter 1 weist einen Steckansatz 2 zur Fixierung in einer nicht dargestellten Steckaufnahme eines Basisteils sowie einen Halteansatz 3 zur Halterung eines Meißels 4 mit einer Meißelspitze 5 auf. Wie aus der Fig. 1 ersichtlich ist, schneidet eine Längsachse A die Meißelspitze 5. Die Längsachse A liegt des Weiteren in einer senkrecht zur dargestellten Ebene verlaufende Teilungsfläche E, welche den Steckansatz 2 durchschneidet und im Ausführungsbeispiel mit einer Mittelebene ME innerhalb der Steckaufnahme sowie des Steckansatzes 2 identisch ist. In der Darstellung links der Teilungsfläche E befindet sich ein Steckansatz-Hauptsegment 6, welches mit dem Halteansatz 3 verschweißt ist, während rechts der Teilungsfläche E ein Steckansatz-Nebensegment 7 angeordnet ist, welches vom Steckansatz-Hauptsegment 6 abnehmbar ist. Die Steckansatzsegmente 6,7 sind durch eine Klemmvorrichtung 8 in der Steckaufnahme gespreizt. Die Klemmvorrichtung 8 umfasst zusätzlich zum Steckansatz-Nebensegment 7, wie insbesondere aus Fig. 2 ersichtlich ist, eine Schraube 9 mit einem Schraubenkopf 10, einen dem Schraubenkopf 10 zugewandten Klemmkonus 11 sowie einen Gewindekonus 12. Die Schraube 9 ist durch eine zwischen dem Klemmkonus 11 und dem Gewindekonus 12 angeordnete Führung 13 am Steckansatz-Nebensegment 7 hindurchgeführt.Fig. 1 shows a bit holder 1 for a chisel holder changing system, for example a road milling machine, a cutting machine or a mining machine. Of the Chisel holder 1 has a plug neck 2 for fixing in a plug-in receptacle (not shown) of a base part and a retaining lug 3 for holding a chisel 4 with a chisel tip 5. As can be seen from Fig. 1, a longitudinal axis A intersects the chisel tip 5. The longitudinal axis A is further in a plane perpendicular to the plane shown dividing surface E, which cuts through the plug neck 2 and in the embodiment with a median plane ME within the socket and the Plug neck 2 is identical. In the illustration to the left of the division surface E is a plug-in main segment 6, which is welded to the holding lug 3, while the right side of the division surface E a plug-neck sub-segment 7 is arranged, which is removable from the plug-in main segment 6. The plug neck segments 6,7 are spread by a clamping device 8 in the plug receptacle. The clamping device 8 comprises, in addition to the plug approach sub-segment 7, as shown in particular in FIG. 2, a screw 9 with a screw head 10, a screw head 10 facing clamping cone 11 and a threaded cone 12. The screw 9 is connected by a between the clamping cone 11th and the threaded cone 12 arranged guide 13 is passed to the plug approach sub-segment 7.

Die Steckansatzsegmente 6,7 weisen jeweils einen zylindrischen Oberflächenbereich 14, einen unteren Konusbereich 15 sowie einen oberen Konusbereich 16 auf. Am unteren Konusbereich 15 ist eine Ausbuchtung 17 zur Zusammenwirkung mit einer nicht dargestellten Verdrehsicherung in der Steckaufnahme vorgesehen. Der Steckansatz 2 ist damit insgesamt derart ausgebildet, dass dieser mit Steckaufnahmen für herkömmliche Meißelhalter mit einteiligen Steckansätzen kompatibel ist. Beim Einsetzen des Meißelhalters 1 in die Steckaufnahme ist die Klemmvorrichtung 8 zunächst derart gelockert, dass die beiden Steckansatzsegmente 6,7 von Hand in die Steckaufnahme eingesetzt werden können. Durch das Anziehen der Schraube 9 werden der Klemmkonus 11 (ohne Gewinde) sowie der Gewindekonus 12 (mit Gewinde) derart axial verspannt, dass die Steckansatzsegmente 6,7 unter Freilassung eines Spaltes von ca. 2-3 mm Breite im Bereich der Teilungsfläche E kraftschlüssig an die Wandung der Steckaufnahme gepresst werden. Durch diesen Klemmmechanismus ist die Verbindung zwischen der Steckaufnahme und dem Meißelhalter 1 unempfindlich sowohl gegenüber Maßungenauigkeiten der zu verbindenden Teile als auch gegenüber Verschmutzungen. Des Weiteren besteht die Möglichkeit, die Klemmvorrichtung 8 durch Anziehen der Schraube 9 nachzuspannen. Die mehrteilige Ausbildung des Steckansatzes 2 hat zudem den Vorteil, dass bei Verschleiß einzelner Teile nur die jeweils betroffenen Teile auszuwechseln sind.The plug projection segments 6, 7 each have a cylindrical surface region 14, a lower cone region 15 and an upper cone region 16. At the lower cone portion 15, a bulge 17 is provided for cooperation with a rotation, not shown, in the plug-in receptacle. The plug-in approach 2 is thus designed overall so that it is compatible with plug-in receptacles for conventional bit holder with one-piece plug lugs. When inserting the chisel holder 1 into the plug-in receptacle, the clamping device 8 is initially loosened in such a way that the two plug-in projection segments 6, 7 can be inserted manually into the plug-in receptacle. By tightening the screw 9, the clamping cone 11 (without thread) and the thread cone 12 (with thread) are clamped axially such that the insertion segments 6.7, leaving a gap of about 2-3 mm width in the region of the division surface E frictionally pressed against the wall of the plug-in receptacle become. By this clamping mechanism, the connection between the plug-in receptacle and the bit holder 1 is insensitive to both dimensional inaccuracies of the parts to be joined and against contamination. Furthermore, it is possible to retighten the clamping device 8 by tightening the screw 9. The multi-part design of the plug-in approach 2 also has the advantage that when worn individual parts only the respective affected parts are replaced.

Das Entfernen des Meißelhalters 1 aus der Steckaufnahme geschieht auf folgende Weise: Die Schraube 9 wird gelockert, so dass der Schraubenkopf 10 etwas vom Klemmkonus 11 abhebt. Die Schraube 9 ist dabei weiterhin im Eingriff mit dem Gewinde des Gewindekonus 12. Durch einen Schlag auf den Schraubenkopf 10 wird nunmehr der Gewindekonus 12 nach unten verlagert, so dass die Klemmung zwischen dem Steckansatz-Hauptsegment 6 und dem Steckansatz-Nebensegment 7 gelöst ist. Der Meißelhalter 1 kann anschließend ohne Werkzeug aus der Steckaufnahme entnommen werden. Selbst bei einem Abreißen der Schraube 9 kann der Meißelhalter 1 auf einfache Weise aus der Steckaufnahme entnommen werden.The removal of the chisel holder 1 from the plug-in takes place in the following manner: The screw 9 is loosened, so that the screw head 10 lifts something from the clamping cone 11. The screw 9 is still engaged with the thread of the threaded cone 12. By a blow to the screw head 10, the threaded cone 12 is now displaced downwards, so that the clamping between the plug-in main segment 6 and the plug-side sub-segment 7 is released. The chisel holder 1 can then be removed without tools from the plug receptacle. Even with a tearing off the screw 9, the bit holder 1 can be easily removed from the plug receptacle.

Die Fig. 3a-c und 4a-c zeigen in verschiedenen Ansichten im Detail den Klemmkonus 11 bzw. den Gewindekonus 12. Der Klemmkonus 11 weist eine glatte Bohrung 18 auf, während der vergleichsweise gering dimensionierte Gewindekonus 12 eine Gewindebohrung 19 aufweist. Eine Anlagefläche 20 des Klemmkonus 11 sowie eine Anlagefläche 21 des Gewindekonus 12 sind zur Anlage am Steckansatz-Hauptsegment 6 vorgesehen und sind, bezogen auf Fig. 2, welche die Klemmvorrichtung 8 in gespanntem Zustand zeigt, geringfügig links der Längsachse A angeordnet, woraus sich der Spalt zwischen den Steckansatzsegmenten 6,7 ergibt. Um den Schraubenkopf 10 vor mechanischer Beschädigung zu schützen, weist der Klemmkonus 11 zwei Flankenteile 22 auf, zwischen denen der Schraubenkopf 10 liegt. Zusätzlich kann der Schraubenkopf 10 durch eine nicht dargestellte Abdeckung gegen Verschmutzung geschützt werden.3a-c and 4a-c show in various views in detail the clamping cone 11 and the threaded cone 12. The clamping cone 11 has a smooth bore 18, while the comparatively small-sized threaded cone 12 has a threaded bore 19. An abutment surface 20 of the clamping cone 11 and a contact surface 21 of the threaded cone 12 are provided for abutment with the plug-in main segment 6 and, based on Fig. 2, which shows the clamping device 8 in a tensioned state, slightly to the left of the longitudinal axis A, resulting in the Gap between the plug neck segments 6,7 results. In order to protect the screw head 10 against mechanical damage, the clamping cone 11 has two flank parts 22, between which the screw head 10 is located. In addition, the screw head 10 can be protected by a cover, not shown, against contamination.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Meißelhaltertoolholders
22
Steckansatzplug-in projection
33
Halteansatzretaining extension
44
Meißelchisel
55
Meißelspitzechisel tip
66
Steckansatz-HauptsegmentPlug-in shoulder main segment
77
Steckansatz-NebensegmentPlug-in shoulder-by-segment
88th
Klemmvorrichtungclamping device
99
Schraubescrew
1010
Schraubenkopfscrew head
1111
Klemmkonusclamping cone
1212
Gewindekonusthreaded cone
1313
Führungguide
1414
Oberflächenbereichsurface area
1515
unterer Konusbereichlower cone area
1616
oberer Konusbereichupper cone area
1717
Ausbuchtungbulge
1818
Bohrungdrilling
1919
Gewindebohrungthreaded hole
2020
Anlageflächecontact surface
2121
Anlageflächecontact surface
2222
Flankenteilflank portion
AA
Längsachselongitudinal axis
Ee
Teilungsflächedividing surface
MEME
Mittelebenemidplane

Claims (6)

  1. Pick holder comprising a holding extension (3) for accommodating a pick (4) and a plug-in extension (2), having a longitudinal axis (A), for clamping in place in a plug-in receptacle of a base part, characterized in that the plug-in extension (2) is divided in such a way that a dividing surface (E) runs at least essentially in the direction of its longitudinal axis (A), a clamping device (8) being provided between a plug-in extension main segment (6) and a plug-in extension secondary segment (7) along the dividing surface (E), said clamping device (8) having a screw element (10) and spreading the plug-in extension segments (6, 7) perpendicular to the dividing surface (E).
  2. Pick holder according to Claim 1, characterized in that the plug-in extension main segment (6) is integrally connected to the holding extension (3).
  3. Pick holder according to Claim 1 or 2, characterized in that the dividing surface (E) lies at least approximately in a centre plane (ME), intersecting the longitudinal axis (A), of the plug-in extension (2).
  4. Pick holder according to one of Claims 1 to 3, characterized in that the clamping device (8) is arranged asymmetrically to the dividing surface (E).
  5. Pick holder according to one of Claims 1 to 4, characterized in that the clamping device (8) has two opposite tapered elements (11, 12).
  6. Pick holder according to one of Claims 1 to 5, characterized in that a pick (4) is held in the holding extension (3) in such a way that its pick tip (5) is intersected at least approximately by the longitudinal axis (A) of the plug-in extension (2).
EP03029128A 2002-12-20 2003-12-18 Pick holder Expired - Lifetime EP1433923B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10261159 2002-12-20
DE10261159A DE10261159C5 (en) 2002-12-20 2002-12-20 toolholders

Publications (2)

Publication Number Publication Date
EP1433923A1 EP1433923A1 (en) 2004-06-30
EP1433923B1 true EP1433923B1 (en) 2007-06-06

Family

ID=31896377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03029128A Expired - Lifetime EP1433923B1 (en) 2002-12-20 2003-12-18 Pick holder

Country Status (3)

Country Link
EP (1) EP1433923B1 (en)
AT (1) ATE364129T1 (en)
DE (2) DE10261159C5 (en)

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DE3242144C2 (en) * 1982-11-13 1987-02-05 Peters, Albert, 4000 Düsseldorf Rotating tilting chisel
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DE3317146A1 (en) * 1983-05-11 1984-11-15 Albert 4000 Düsseldorf Peters Spline gear
DE4322401C2 (en) * 1993-07-06 1996-06-20 Betek Bergbau & Hartmetall Attachment of a cutting tool to a cutting body
DE29822369U1 (en) * 1998-12-16 1999-03-18 Wagener, Helmut, 53577 Neustadt Device for holding a tool
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

Also Published As

Publication number Publication date
DE10261159C5 (en) 2010-11-11
ATE364129T1 (en) 2007-06-15
DE50307414D1 (en) 2007-07-19
EP1433923A1 (en) 2004-06-30
DE10261159B3 (en) 2004-03-25

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