EP0768151B1 - Tool holder - Google Patents

Tool holder Download PDF

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Publication number
EP0768151B1
EP0768151B1 EP96810422A EP96810422A EP0768151B1 EP 0768151 B1 EP0768151 B1 EP 0768151B1 EP 96810422 A EP96810422 A EP 96810422A EP 96810422 A EP96810422 A EP 96810422A EP 0768151 B1 EP0768151 B1 EP 0768151B1
Authority
EP
European Patent Office
Prior art keywords
tool
locking element
tool holder
locking elements
receiving sleeve
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
EP96810422A
Other languages
German (de)
French (fr)
Other versions
EP0768151A1 (en
Inventor
Hans-Werner Bongers-Ambrosius
Jörg Eichhorn
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
Original Assignee
Hilti AG
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Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP0768151A1 publication Critical patent/EP0768151A1/en
Application granted granted Critical
Publication of EP0768151B1 publication Critical patent/EP0768151B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0034—Details of shank profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0049—Roll-shaped locking members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17068—Rotary socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17076—Spreading elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17666—Radially reciprocating jaws
    • Y10T279/17692—Moving-cam actuator
    • Y10T279/17743—Reciprocating cam sleeve
    • Y10T279/17752—Ball or roller jaws
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y10T279/17811—Reciprocating sleeve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/907—Tool or Tool with support including detailed shank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means
    • Y10T408/953—Clamping jaws

Definitions

  • the invention relates to a tool holder for inserting a tool with a a circular cross-section insertion end, the at least one axially has a closed groove extending only partially over its circumference, wherein in a receiving sleeve at least one designed as a cylinder, the axial fixing and the locking element for torque transmission to the tool the groove is radially displaceable.
  • the known tool holder has two Locking elements, which are designed as cylinders and an alignment have, according to which the axis of rotation of the locking elements parallel to The main axis of a receiving sleeve runs.
  • the Locking elements radially displaceable in such a way that they are in the engaged position protrude the grooves provided on the tool. Because the grooves are axial are closed, the locking elements prevent the Tool from the tool holder and allow with a correspondingly long Dimensioning of the grooves the required axial movement of the tool.
  • the Grooves on the tool also have surfaces which are connected to the locking elements are in contact so that the torque is transferred to the tools becomes.
  • DE 89 10 822 U describes a tool holder with a counter to the drilling direction, against the force of a spring displaceable actuating sleeve and a receiving sleeve known into which the insertion end of a tool protrudes.
  • the insertion end has one circular cross-section and an axially closed groove that only partially over extends the circumference of the insertion end.
  • the receiving sleeve has a radial extending passage opening, that of receiving and guiding one as a cylinder trained locking element, whose axis of rotation to the main axis of the Receiving sleeve transversely and this is arranged cutting.
  • the radial displacement of the Locking element in a locking position takes place along its axis of rotation with the help of the actuating sleeve.
  • the object is achieved in that the axis of rotation of the Locking element is arranged transversely and at a distance from the main axis of the receiving sleeve.
  • this also serves with the groove in the Tool interacting locking element in its engaged position both the torque transmission and the axial holding of the tool, this axial bracket allows limited axial displacement. Since according to Invention the axis of rotation of the locking element transversely and at a distance from the direction of displacement the tool runs, the locking element is rolled according to Art of a rolling element. Relative displacements between tools leading to friction and locking element are avoided, resulting in an essential Increases the service life of both the tool and the tool holder.
  • the axis of rotation of the locking element in runs substantially perpendicular to the main axis of the receiving sleeve.
  • the length of the locking element is about 2 to 3 times its length Diameter is.
  • the ends of the locking elements are preferably dome-shaped, so that there are large transmission areas in cooperation with the tool form.
  • the dome-like stimuli lead to another when they pass on Avoid wear due to friction.
  • At least two locking elements are preferably provided, with Arrangement of two locking elements that are essentially diametrically opposed to each other can face each other. Instead of two locking elements, there is also the Possibility, for example, to provide three locking elements, which then offers these three locking elements evenly over the circumference of the Distribute the receiving sleeve.
  • a tool 1 is inserted into the tool holder, which has two diametrically opposite grooves 2, which are axially closed are.
  • the tool holder also has a receiving sleeve 3, which has openings 3a is provided. Within the openings 3a are designed as cylinders Locking elements 4 mounted radially. As the drawing shows, they are Stimulating the locking elements 4 formed dome-like.
  • the locking elements 4 are engaged with the grooves 2 of the tool 1. This allows a torque from the tool holder are transferred to the tool 1, the tool 1 due to the axial closed grooves 2 is axially secured and due to the corresponding Dimensioning of the grooves 2 is also axially displaceable to a limited extent. For this purpose If a locking element 4 is arranged, it exceeds the length of the respective groove 2 the diameter of the locking element 4 by a certain amount, which corresponds to the necessary axial movement.
  • the receiving sleeve 3 is surrounded by an actuating sleeve 5, which in turn by is surrounded by a cage 6.
  • the actuating sleeve 5 has niches, not shown, which, for example, by moving the actuating sleeve 5 in projection with the Locking elements 4 can be brought so that they are able to the extent that the tool 1 is removed from the tool holder can be.
  • locking elements 4 instead of arranging only one locking element 4 per groove 2 in tool 1 can also several locking elements 4, with one and the same groove 2nd cooperate, be provided. In such a case they are Locking elements 4 in a parallel to the main axis of the receiving sleeve 3rd running direction one behind the other and thus allow transmission higher torques. According to the number of envisaged Locking elements 4, the length of the groove 2 is to be dimensioned in the Way that the tool 1 can still perform a sufficient axial movement.

Description

Die Erfindung betrifft einen Werkzeughalter zum Einsetzen eines Werkzeuges mit einem, einen kreisrunden Querschnitt aufweisenden Einsteckende, das wenigstens eine axial geschlossene, sich nur teilweise über deren Umfang erstreckende Nut aufweist, wobei in einer Aufnahmehülse wenigstens ein als Zylinder ausgebildetes, der axialen Festlegung und der Drehmomentübertragung auf das Werkzeug dienendes Verriegelungselement für die Nut radial verschiebbar gelagert ist. The invention relates to a tool holder for inserting a tool with a a circular cross-section insertion end, the at least one axially has a closed groove extending only partially over its circumference, wherein in a receiving sleeve at least one designed as a cylinder, the axial fixing and the locking element for torque transmission to the tool the groove is radially displaceable.

Beispielsweise aus der DE-OS 26 40 767 ist ein derartiger Werkzeughalter für Handwerkzeugmaschinen bekannt, wobei sich in den Werkzeughalter Werkzeuge einsetzen lassen, die beispielsweise zwei axial geschlossene Nuten aufweisen. Bei den hier vor allem in Betracht kommenden Handwerkzeugmaschinen handelt es sich überwiegend um Bohrhämmer, Kombihämmer und Meisselhämmer. Somit übertragen diese Handwerkzeugmaschinen auf das im Werkzeughalter eingesetzte Werkzeug wie Bohrer oder Meissel zumeist sowohl eine Dreh- als auch eine Schlagbewegung. Der Werkzeughalter muss damit derart ausgelegt sein, dass einerseits Drehmomente auf das Werkzeug übertragen werden können und andererseits sichergestellt ist, dass das Werkzeug axial verschieblich im Werkzeughalter gelagert ist, aber nicht aus diesem herausfallen kann.For example from DE-OS 26 40 767 such a tool holder for Hand-held machine tools are known, with tools in the tool holder Let insert, for example, have two axially closed grooves. Both here it is mainly a question of hand-held machine tools mainly around rotary hammers, combination hammers and chisel hammers. Thus transferred these hand machine tools like the tool used in the tool holder Drills or chisels usually have both a turning and a striking movement. Of the Tool holder must therefore be designed so that on the one hand torques on the Tool can be transferred and on the other hand it is ensured that the Tool is axially displaceable in the tool holder, but not from this can fall out.

Zur Erfüllung der obigen Anforderungen weist der bekannte Werkzeughalter zwei Verriegelungselemente auf, die als Zylinder ausgebildet sind und eine Ausrichtung aufweisen, gemäss welcher die Rotationsachse der Verriegelungselemente parallel zur Hauptachse einer Aufnahmehülse verläuft. Innerhalb dieser Aufnahmehülse sind die Verriegelungselemente derart radial verschiebbar, das sie in eingerückter Stellung in die am Werkzeug vorgesehenen Nuten einragen. Dadurch, dass die Nuten axial geschlossen sind, verhindern die Verriegelungselemente ein Herausfallen des Werkzeuges aus dem Werkzeughalter und erlauben bei entsprechend langer Dimensionierung der Nuten die geforderte axiale Verschieblichkeit des Werkzeuges. Die Nuten am Werkzeug weisen ferner Flächen auf, welche mit den Verriegelungselementen in Kontakt stehen, so dass dadurch das Drehmoment auf die Werkzeuge übertragen wird. To meet the above requirements, the known tool holder has two Locking elements, which are designed as cylinders and an alignment have, according to which the axis of rotation of the locking elements parallel to The main axis of a receiving sleeve runs. Within this receptacle are the Locking elements radially displaceable in such a way that they are in the engaged position protrude the grooves provided on the tool. Because the grooves are axial are closed, the locking elements prevent the Tool from the tool holder and allow with a correspondingly long Dimensioning of the grooves the required axial movement of the tool. The Grooves on the tool also have surfaces which are connected to the locking elements are in contact so that the torque is transferred to the tools becomes.

Ferner ist aus der DE 89 10 822 U ein Werkzeughalter mit einer entgegen der Bohrrichtung, gegen die Kraft einer Feder versetzbaren Betätigungshülse und einer Aufnahmehülse bekannt in die das Einsteckende eines Werkzeuges ragt. Das Einsteckende weist einen kreisrunden Querschnitt und eine axial geschlossene Nut auf, die sich nur teilweise über den Umfang des Einsteckendes erstreckt. Die Aufnahmehülse weist eine sich radial erstreckende Durchtrittsöffnung auf, die der Aufnahme und der Führung eines als Zylinder ausgebildeten Verriegelungselementes dient, dessen Rotationsachse zur Hauptachse der Aufnahmehülse quer und diese schneidend angeordnet ist. Die radiale Versetzung des Verriegelungselementes in eine Verriegelungsstellung erfolgt entlang seiner Rotationsachse mit Hilfe der Betätigungshülse. Furthermore, DE 89 10 822 U describes a tool holder with a counter to the drilling direction, against the force of a spring displaceable actuating sleeve and a receiving sleeve known into which the insertion end of a tool protrudes. The insertion end has one circular cross-section and an axially closed groove that only partially over extends the circumference of the insertion end. The receiving sleeve has a radial extending passage opening, that of receiving and guiding one as a cylinder trained locking element, whose axis of rotation to the main axis of the Receiving sleeve transversely and this is arranged cutting. The radial displacement of the Locking element in a locking position takes place along its axis of rotation with the help of the actuating sleeve.

Wie bereits darauf hingewiesen, ist es insbesondere im Zusammenhang mit der von den Handwerkzeugmaschinen auf die Werkzeuge abgegebenen Schlagbewegung erforderlich, dass die Werkzeuge im Werkzeughalter begrenzt axial verschiebbar gelagert sind. Im Betrieb erfolgt somit eine laufende Relativverschiebung zwischen Werkzeug und Werkzeughalter. Nachdem die für die Übertragung des Drehmomentes massgebenden Verriegelungselemente beim gattungsgemässen Werkzeughalter teil der Aufnahmehülse sind, erfolgt eine Relativverschiebung zwischen dem Werkzeug und den als Zylinder ausgebildeten Verriegelungselementen, wobei zusätzlich noch das Drehmoment auf die Verriegelungselemente einwirkt. Somit entsteht an den Berührungsflächen zwischen Verriegelungselementen und Werkzeug eine ausserordentlich hohe Reibung, welche zu einem starken Verschleiss sowohl der Verriegelungselemente als auch der entsprechenden Bereiche am Werkzeug führt. Ein vorzeitiger Ausfall der Werkzeuge sowie ein unverhältnismässig grosser Verschleiss am Werkzeughalter, insbesondere an den Verriegelungselementen, sind die Folgen davon.As already pointed out, it is particularly in connection with that of the Handheld machine tools on the tools emitted striking motion required that the tools in the tool holder can be axially displaced to a limited extent are stored. During operation, there is a constant relative shift between Tool and tool holder. After that for the transmission of the torque authoritative locking elements in the generic tool holder part of the Are a receiving sleeve Relative displacement between the tool and the cylinder Locking elements, with additional torque on the Interlocking elements acts. Thus arises at the contact surfaces between Locking elements and tools have an extraordinarily high friction, which too heavy wear on both the locking elements and the corresponding areas on the tool. An early failure of the tools as well as a disproportionate amount of wear on the tool holder, in particular on the locking elements, are the consequences of this.

Es ist demnach Aufgabe der vorliegenden Erfindung, einen Werkzeughalter für Handwerkzeugmaschinen der genannten Art zu schaffen, bei welchem ein schädlicher Verschleiss sowohl am Werkzeug als auch am Werkzeughalter vermieden wird. It is therefore an object of the present invention to provide a tool holder for To create hand tools of the type mentioned, in which a harmful Wear on both the tool and the tool holder is avoided.

Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass die Rotationsachse des Verriegelungselementes quer und im Abstand zur Hauptachse der Aufnahmehülse angeordnet ist. According to the invention the object is achieved in that the axis of rotation of the Locking element is arranged transversely and at a distance from the main axis of the receiving sleeve.

Auch bei dem erfindungsgemäss ausgebildeten Werkzeughalter dient das mit der Nut im Werkzeug zusammenwirkende Verriegelungselement in seiner eingerückten Stellung sowohl der Drehmomentübertragung als auch der axialen Halterung des Werkzeuges, wobei diese axiale Halterung eine begrenzte axiale Verschiebbarkeit zulässt. Da gemäss Erfindung die Rotationsachse des Verriegelungselementes quer und im Abstand zur Verschieberichtung des Werkzeuges verläuft, erfolgt ein Abrollen des Verriegelungselementes nach Art eines Wälzkörpers. Zu Reibungen führende Relativverschiebungen zwischen Werkzeug und Verriegelungselement werden dadurch vermieden, was zu einer wesentlichen Erhöhung der Standzeiten sowohl des Werkzeuges als auch des Werkzeughalters führt.With the tool holder designed according to the invention, this also serves with the groove in the Tool interacting locking element in its engaged position both the torque transmission and the axial holding of the tool, this axial bracket allows limited axial displacement. Since according to Invention the axis of rotation of the locking element transversely and at a distance from the direction of displacement the tool runs, the locking element is rolled according to Art of a rolling element. Relative displacements between tools leading to friction and locking element are avoided, resulting in an essential Increases the service life of both the tool and the tool holder.

Ideale Verhältnisse hinsichtlich Abwälzen des Verriegelungselementes werden erreicht, wenn zweckmässigerweise die Rotationsachse des Verriegelungselementes im wesentlichen senkrecht zur Hauptachse der Aufnahmehülse verläuft. Ideal conditions with regard to rolling the locking element are achieved if appropriate, the axis of rotation of the locking element in runs substantially perpendicular to the main axis of the receiving sleeve.

Aus der Sicht der Dimensionierung des Verriegelungselementes wirkt es sich vorteilhaft aus, wenn die Länge des Verriegelungselementes etwa dem 2- bis 3-fachen dessen Durchmessers beträgt.From the point of view of the dimensioning of the locking element, it has an advantageous effect if the length of the locking element is about 2 to 3 times its length Diameter is.

Die Stimenden der Verriegelungselemente sind vorzugsweise kuppenartig ausgebildet, so dass sich im Zusammenwirken mit dem Werkzeug grosse Übertragunsbereiche bilden. Zudem führen die kuppenartigen Stimenden beim Abwälzen zu einer weiteren Vermeidung von Verschleiss durch Reibung.The ends of the locking elements are preferably dome-shaped, so that there are large transmission areas in cooperation with the tool form. In addition, the dome-like stimuli lead to another when they pass on Avoid wear due to friction.

Vorzugsweise sind mindestens zwei Verriegelungselemente vorgesehen, wobei bei Anordnung von zwei Verriegelungselementen diese einander im wesentlichen diametral gegenüber liegen können. Anstelle von zwei Verriegelungselementen besteht auch die Möglichkeit, beispielsweise drei Verriegelungselemente vorzusehen, wobei es sich dann anbietet, diese drei Verriegelungselemente gleichmässig über den Umfang der Aufnahmehülse zu verteilen.At least two locking elements are preferably provided, with Arrangement of two locking elements that are essentially diametrically opposed to each other can face each other. Instead of two locking elements, there is also the Possibility, for example, to provide three locking elements, which then offers these three locking elements evenly over the circumference of the Distribute the receiving sleeve.

Die Erfindung wird nachstehend anhand einer ein Beispiel wiedergebenden Zeichnung erläutert, welche einen Schnitt durch einen schematisch dargestellten Werkzeughalter mit Werkzeug zeigt.The invention will now be described with reference to an example drawing explains which is a section through a schematically illustrated tool holder with tool shows.

Wie die Zeichnung zeigt, ist in den Werkzeughalter ein Werkzeug 1 eingesetzt, welches zwei einander diametral gegenüberliegende Nuten 2 aufweist, welche axial geschlossen sind.As the drawing shows, a tool 1 is inserted into the tool holder, which has two diametrically opposite grooves 2, which are axially closed are.

Der Werkzeughalter weist femer eine Aufnahmehülse 3 auf, welche mit Durchbrüchen 3a versehen ist. Innerhalb der Durchbrüche 3a sind als Zylinder ausgebildete Verriegelungselemente 4 radial verschiebbar gelagert. Wie die Zeichnung zeigt, sind die Stimenden der Verriegelungselemente 4 kuppenartig ausgebildet.The tool holder also has a receiving sleeve 3, which has openings 3a is provided. Within the openings 3a are designed as cylinders Locking elements 4 mounted radially. As the drawing shows, they are Stimulating the locking elements 4 formed dome-like.

In der gezeigten, eingerückten Stellung stehen die Verriegelungselemente 4 in Eingriff mit den Nuten 2 des Werkzeuges 1. Damit kann vom Werkzeughalter ein Drehmoment auf das Werkzeug 1 übertragen werden, wobei das Werkzeug 1 aufgrund der axial geschlossenen Nuten 2 axial gesichert ist und aufgrund entsprechender Dimensionierung der Nuten 2 auch begrenzt axial verschiebbar ist. Zu diesem Zwecke übersteigt bei Anordnung eines Verriegelungselementes 4 die Länge der jeweiligen Nut 2 den Durchmesser des Verriegelungselementes 4 um einen bestimmten Betrag, welcher der notwendigen Axialbewegung entspricht. In the shown, engaged position, the locking elements 4 are engaged with the grooves 2 of the tool 1. This allows a torque from the tool holder are transferred to the tool 1, the tool 1 due to the axial closed grooves 2 is axially secured and due to the corresponding Dimensioning of the grooves 2 is also axially displaceable to a limited extent. For this purpose If a locking element 4 is arranged, it exceeds the length of the respective groove 2 the diameter of the locking element 4 by a certain amount, which corresponds to the necessary axial movement.

Die Aufnahmehülse 3 ist von einer Betätigungshülse 5 umgeben, welche ihrerseits von einem Käfig 6 umgeben ist. Die Betätigungshülse 5 weist nicht dargestellte Nischen auf, welche beispielsweise durch Verschieben der Betätigungshülse 5 in Projektion mit den Verriegelungselementen 4 gebracht werden können, so dass diese in der Lage sind, soweit auszuweichen, dass das Werkzeug 1 aus dem Werkzeughalter entnommen werden kann.The receiving sleeve 3 is surrounded by an actuating sleeve 5, which in turn by is surrounded by a cage 6. The actuating sleeve 5 has niches, not shown, which, for example, by moving the actuating sleeve 5 in projection with the Locking elements 4 can be brought so that they are able to the extent that the tool 1 is removed from the tool holder can be.

Anstelle der Anordnung von nur einem Verriegelungselement 4 pro Nut 2 im Werkzeug 1 können auch mehrere Verriegelungselemente 4, die mit ein und derselben Nut 2 zusammenwirken, vorgesehen sein. In einem solchen Falle sind die Verriegelungselemente 4 in einer parallel zur Hauptachse der Aufnahmehülse 3 verlaufenden Richtung hintereinander angeordnet und erlauben so eine Übertragung höherer Drehmomente. Entsprechend der Anzahl der vorgesehenen Verriegelungselemente 4 ist die Länge der Nut 2 zu dimensionieren und zwar in der Weise, dass das Werkzeug 1 noch eine ausreichende Axialbewegung ausführen kann.Instead of arranging only one locking element 4 per groove 2 in tool 1 can also several locking elements 4, with one and the same groove 2nd cooperate, be provided. In such a case they are Locking elements 4 in a parallel to the main axis of the receiving sleeve 3rd running direction one behind the other and thus allow transmission higher torques. According to the number of envisaged Locking elements 4, the length of the groove 2 is to be dimensioned in the Way that the tool 1 can still perform a sufficient axial movement.

Claims (6)

  1. Tool chuck for a tool (1), comprising an insert end of circular cross-section with at least one groove (2) which is axially closed and extends only partially over its periphery, and in a receiving sleeve (3) is radially displaceably mounted at least one locking element (4) for the groove (2) in the form of a cylinder which serves axial fixing of the tool and torque transfer onto the tool, characterised in that the rotary axis of the locking element (4) is configured transversely and at a distance to the main axis of the receiving sleeve (3).
  2. Tool chuck according to Claim 1, characterised in that the rotary axis of the locking element (4) extends essentially vertically to the main axis of the receiving sleeve (3).
  3. Tool chuck according to Claim 1 or 2, characterised in that the length of the locking element (4) equals between 1 to 3 times its diameter.
  4. Tool chuck according to one of Claims 1 to 3, characterised in that the end surfaces of the locking element (4) are of topshaped design.
  5. Tool chuck according to one of Claims 1 to 4, characterised in that at least two locking elements (4) are provided.
  6. Tool chuck according to Claim 5, characterised in that three locking elements (4) are provided.
EP96810422A 1995-10-09 1996-06-24 Tool holder Expired - Lifetime EP0768151B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537561 1995-10-09
DE19537561A DE19537561A1 (en) 1995-10-09 1995-10-09 Tool holder

Publications (2)

Publication Number Publication Date
EP0768151A1 EP0768151A1 (en) 1997-04-16
EP0768151B1 true EP0768151B1 (en) 1999-03-10

Family

ID=7774390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810422A Expired - Lifetime EP0768151B1 (en) 1995-10-09 1996-06-24 Tool holder

Country Status (6)

Country Link
US (1) US5807040A (en)
EP (1) EP0768151B1 (en)
JP (1) JP4025382B2 (en)
CN (1) CN1068540C (en)
DE (2) DE19537561A1 (en)
DK (1) DK0768151T3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0121947D0 (en) * 2001-09-12 2001-10-31 Black & Decker Inc Tool holder for hammer
US6843484B2 (en) 2002-07-08 2005-01-18 Monte L. Schroeder Quick change chuck
DE502004010872D1 (en) * 2003-11-26 2010-04-22 Hilti Ag Tool holder for a rotating and beating tool
DE102004054685A1 (en) * 2004-11-12 2006-05-18 Hilti Ag tool holder
IL200980A0 (en) * 2009-09-16 2010-05-17 Iscar Ltd Cutting tool and holder
US8668411B2 (en) 2009-09-16 2014-03-11 Iscar, Ltd. Cutting tool and holder
US10314610B2 (en) 2015-03-25 2019-06-11 Medtronic Ps Medical, Inc. Slanted drive axis rotary surgical cutting tools and powered handpieces
US10080579B2 (en) 2015-03-25 2018-09-25 Medtronic Ps Medical, Inc. Pin drive rotary surgical cutting tools and powered handpieces
CN107570774A (en) * 2017-08-28 2018-01-12 朱炳和 A kind of shank endoporus milling cutter handle of boring machine easy to wear
US10849634B2 (en) 2018-06-20 2020-12-01 Medtronic Xomed, Inc. Coupling portion for rotary surgical cutting systems
CN109047803A (en) * 2018-09-26 2018-12-21 东莞市凯融光学科技有限公司 A kind of rotary quickly positioned tool post disk
US20220361934A1 (en) * 2021-05-13 2022-11-17 DePuy Synthes Products, Inc. Surgical impacting tool interfaces

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2807473A (en) * 1956-02-20 1957-09-24 Alfred J Kiehne Tool mountings and release
US4377292A (en) * 1979-01-09 1983-03-22 The Bendix Corporation Chuck assembly and collet
SU1253767A1 (en) * 1983-06-20 1986-08-30 Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Механизированного И Ручного Строительно-Монтажного Инструмента,Вибраторов И Строительно-Отделочных Машин Arrangement for securing working tool in impact-action machine
DE3824894A1 (en) * 1988-07-22 1990-01-25 Bosch Gmbh Robert DEVICE ON HAND MACHINE TOOLS FOR TORQUE TRANSMISSION
US4900202A (en) * 1988-09-08 1990-02-13 Wienhold James L Chuck assembly for tool bits
US5013194A (en) * 1988-09-08 1991-05-07 Wienhold James L Chuck assembly for tool bits
DE8910822U1 (en) * 1989-09-11 1990-01-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De
DE4104131A1 (en) * 1990-05-08 1991-11-14 Bosch Gmbh Robert HAND DRILLING MACHINE
DE4105414A1 (en) * 1991-02-21 1992-08-27 Hilti Ag TOOL AND TOOL HOLDER FOR HAND TOOLS
CN1062315A (en) * 1991-09-02 1992-07-01 深圳泰克新技术开发公司 Workpiece fixture for drilling and threading
DE4200643A1 (en) * 1992-01-13 1993-07-15 Hilti Ag IMPACT DRILLING TOOLS AND CHISELING TOOLS FOR THESE TOOLS
CN2121299U (en) * 1992-03-10 1992-11-11 厉永明 Fast-changeable drill bit clamping apparatus
DE4210451A1 (en) * 1992-03-30 1993-10-07 Plica Werkzeugfabrik Ag Mollis Torque transmission device
CN2147918Y (en) * 1992-12-10 1993-12-01 柳州市开关厂职工大学 Drill chuck capable of fast replacing drill
DE4313578A1 (en) * 1993-03-06 1994-09-08 Hilti Ag Tool and tool holder for hand tools
DE9305463U1 (en) * 1993-04-10 1993-06-24 Crones & Co Gmbh, 8800 Ansbach, De
DE4340728C1 (en) * 1993-11-30 1995-01-26 Bosch Gmbh Robert Device on powered hand tools for the rotary driving of tools
DE4340727C2 (en) * 1993-11-30 1996-02-15 Bosch Gmbh Robert Device on hand-held machine tools for turning tools
DE4341969A1 (en) * 1993-12-09 1995-06-14 Hilti Ag Tool and tool holder for hand tools
US5398946A (en) * 1993-12-29 1995-03-21 Poly-Tech Industries Chuck having one-step lock and release

Also Published As

Publication number Publication date
CN1150073A (en) 1997-05-21
EP0768151A1 (en) 1997-04-16
US5807040A (en) 1998-09-15
CN1068540C (en) 2001-07-18
DE59601412D1 (en) 1999-04-15
JP4025382B2 (en) 2007-12-19
DE19537561A1 (en) 1997-04-10
JPH09117809A (en) 1997-05-06
DK0768151T3 (en) 2000-06-05

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