EP2051836B1 - Tool receptacle - Google Patents
Tool receptacle Download PDFInfo
- Publication number
- EP2051836B1 EP2051836B1 EP07730245A EP07730245A EP2051836B1 EP 2051836 B1 EP2051836 B1 EP 2051836B1 EP 07730245 A EP07730245 A EP 07730245A EP 07730245 A EP07730245 A EP 07730245A EP 2051836 B1 EP2051836 B1 EP 2051836B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking
- tool
- axially
- receptacle
- common component
- 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.)
- Not-in-force
Links
- 238000003780 insertion Methods 0.000 claims abstract description 15
- 230000037431 insertion Effects 0.000 claims abstract description 15
- 230000036316 preload Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 2
- 230000013011 mating Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0076—Angular position of the chisel modifiable by hand
-
- 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
- B25D2217/0057—Details related to cleaning or cooling the tool or workpiece
- B25D2217/0065—Use of dust covers
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- 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
- Y10T279/17085—Key retainer
-
- 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
- Y10T279/32—Means to prevent jaw loosening
Definitions
- the invention relates to a tool holder according to the preamble of claim 1.
- the DE 100 01 193 A1 has a tool holder for a machine tool, in which for axial locking and unlocking of a tool shaft, a locking control element is moved axially with a first actuating sleeve and a locking control body is rotated with a second actuating sleeve for changing the rotational position of the receiving body.
- a locking control element is moved axially with a first actuating sleeve and a locking control body is rotated with a second actuating sleeve for changing the rotational position of the receiving body.
- the separate locking control element and the separate locking control body and their operating sleeves limit the space within the tool holder.
- GB 2 297 513 A Furthermore, a tool holder according to the preamble of claim 1 is known.
- the lock control element and the Locking control body are designed as a common component.
- By combining both control functions in a common component of the ease of use for the user of a power tool is significantly increased.
- the gain in space by merging the locking control element and the locking control body allows a much more user-friendly one-handed operation of a rotational adjustment and rotational locking of a tool inserted into the tool holder and the axial locking of its tool shaft in the receiving body.
- GB 2 297 513 A known to provide a rotatably mounted on the receiving body Verriegelunsisson for rotational locking of the receiving body. If the locking body fixed to the housing rotatably locked, the receiving body and the recorded in the receiving body tool shank is rotatably locked. The rotational locking is achieved for example by a force and / or positive connection in the direction of rotation between a housing-fixed element and the locking body.
- the locking body is mounted axially movable on the receiving body and can be moved between a rotationally fixed position and a rotatable position.
- the locking body has, for example, at least one projection which engages in a longitudinal groove in the outer casing of the receiving body and guides the locking body in the longitudinal direction of the receiving body.
- the locking body engages around the receiving body.
- the locking body has a toothing, with which it is supported in a rotationally fixed position in a counter-structure of a housing part.
- the counter-structure of the housing part can be designed as a counter-toothing which engages in the toothing in the rotationally fixed position and which caused by positive locking a rotationally fixed mounting of the locking body in the housing part.
- the locking ring can advantageously have a toothing with at least partially trapezoidal recesses and / or trapezoidal teeth through which large torques can be transmitted.
- the common component and the locking body form a rear grip structure for axially displacing the locking body between the rotationally fixed position and a rotatable position of the locking body and for rotating the locking body.
- the rear handle structure has the task of axially displacing the locking body from the non-rotatable position into a rotatable position, then rotating it together with the receiving body and finally shifting it back into the rotationally fixed position.
- the locking body is in particular a locking ring. With a locking ring a short overall length can be achieved and a radial distance between the receiving body and the common component can be bridged. If the locking area for the housing-fixed rotational locking of the locking body designed as a latching ring is in the region of the radially outer diameter, a particularly large transfer area can be used to achieve a positive and / or positive fit.
- the rear grip structure can be formed as a backdrop of the common component, in which engages a projection of the locking body.
- the backdrop and the projection have a corresponding curve contour, which ensures that the locking body initially displaced axially and then rotatably displaced.
- a locking element for axial locking of the tool shaft is provided in the insertion opening, which between a locking position and a Unlocked position is axially movable. In this case, this movement is controlled by the position of the common component.
- a rotatable and / or axially displaceable operating element for axial displacement and / or rotation of the common component.
- the operating element is preferably designed as an operating sleeve, which surrounds at least a part of the common component shell-shaped.
- the operating element is preferably biased by a spring element in the axial direction to define a rest position.
- a movement of the operating element (axial movement and / or rotational movement) can then be transmitted to the locking element, which takes place, for example, in that the operating element entrains the common component.
- the control element is rigidly or elastically coupled to the common component, so that the movement of the operating element is transmitted to the common component.
- At least one locking bolt mounted in the locking element and radially displaceable between a locking position and a release position can be provided, which axially locks the locking element in its locking position and releases it axially in its release position.
- the locking position of the locking bolt the locking element is locked in the unlocked position, so that the tool shaft can be inserted into the tool holder or removed from the tool holder without the user having to hold the locking element (one-hand operation).
- the release position of the locking bolt there is no locking of the locking element in the unlocked position, whereby the tool shaft is axially locked in the tool holder.
- To release the locking the locking pin is released in particular by axial displacement of the tool shaft from its locked position. The displacement movement of the tool shank during removal from the tool holder or when inserting the tool shaft in the tool holder is thereby transferred to the locking pin, causing this dissolves from the locked position.
- a spring element can be provided which biases the locking pin in the direction of the locking position.
- the locking pin is in the locking position in particular at an axial stop in the receiving body. Due to the spring preload, the locking pin moves automatically into the locking position when the user moves the locking element from the locking position to the unlocked position. To lock the locking element while no user intervention is required in the unlocking, whereby the operation is much easier.
- a radially slidably mounted in the receiving body release element for releasing the locking pin is provided from the locking position.
- the release element is displaceable by the tool shank radially outward against the locking pin.
- in particular designed as a ball release member is provided for transmitting power from the tool shank on the locking pin, which projects radially into the insertion of the tool holder and is displaced radially outwardly during insertion or removal of the tool shaft and thereby presses the locking pin radially outward.
- the release element as a ball, which is mounted radially displaceably in an opening in the receiving body, the opening is preferably tapered inwardly. This shape prevents the ball from falling out when no tool shank is in the tool holder.
- a spring device can be provided, which axially biases the locking element in the direction of the locking position and / or the locking body in the direction of the rotationally fixed position.
- At least one radially displaceable locking body is arranged in the receiving body for axial locking of the tool shaft, which can engage in longitudinal grooves of the tool shank in the locking position of the locking element.
- the introduced into the receiving body tool shank is axially locked by the locking body, which engages in a longitudinal groove of the tool shank, so that the tool shank has only a certain range of movement in the axial direction in the locked state.
- the locking element is in the locked position, so it prevents a radial deflection of the locking body.
- the locking body can escape radially outward and the tool shank of the tool can be removed from the tool holder or inserted into the tool holder.
- the locking body are designed as locking rollers that wear little in their function.
- the locking element is the common component or has the common component. If the locking element is formed in one piece and controls / determines the position and orientation of the locking body, then the locking element is the common component. If the locking element has a component which determines the position and orientation of the locking body, then the locking element has the common component.
- the invention also includes a machine tool, in particular a drill and / or chisel hammer, with a tool holder according to the invention.
- FIGS. 1a to 1c show a tool holder 1 for a hammer drill and / or a chisel hammer.
- the tool holder 1 has a substantially hollow-cylindrical receiving body 2 with an insertion opening 3, in which a tool shank 4 of a tool 5, not shown completely rests.
- the receiving body 2 has distributed over the circumference a plurality of apertures 6, in each of which a locking roller 7 formed as a locking body 8 rests, wherein the apertures 6 taper inward in the radial direction.
- the tool shank 4 has, in its lateral surface, a longitudinal groove 9 which projects beyond the axial section with the locking roller 7 and into which the locking roller 7 engages.
- the tool holder 1 has a locking element 10 designed as a locking element 11 which surrounds the receiving body 2 in the region of the tool holder 1.
- the locking element 11 has at its first end 12 a distance from the receiving body 2, wherein a cavity 13 is formed.
- an elastic sleeve 14 is arranged, which is arranged directly on the peripheral surface of the receiving body 2.
- the locking element 11 designed as a locking sleeve 10 has an inner sleeve 16 directly surrounding the receiving body 2 and a radially outer outer shell 17. Between the first end 12 and the second end 15, the locking element 11 has a locking device 18.
- the locking device 18 is, inter alia, a locking pin 19 which is mounted radially displaceably in a radially extending bore in the locking element 11, wherein the locking pin 19 is biased by a ring spring 20 designed as a spring element 21 radially inwardly.
- the locking device 18 further comprises a ball 22 designed as a release element 23, which in a radially extending aperture 24 is mounted radially displaceably in the receiving body 2.
- the opening 24 tapers inward in the radial direction, so that the release element 23 can project only partially inwards into the insertion opening 3.
- the locking pin 19 is guided in two axially extending grooves 25,26 which are arranged in the lateral surface of the receiving body 2 on both sides of the opening 24, wherein the workpiece-side groove 25 has a smaller groove depth than the tool-side groove 26.
- To operate the tool holder 1 is formed as a locking sleeve 10 locking element 11 at least partially axially surrounded by a trained as an operating sleeve 27 control element 28.
- the control element 28 is axially displaceable, wherein it is biased by a spring element, not shown, in the axial direction of the workpiece and a dust sleeve 30 arranged at the front end.
- the dust boot 30 is designed to be elastic in order to prevent the ingress of dust into the insertion opening 3 when the tool shank is inserted.
- At the level of the second end 15 of the locking element 11 is located between the receiving body 2 and the outer sleeve 17 of the locking element 11 designed as a locking ring 31 locking body 32.
- the locking ring 31 is on the outer circumference of its workpiece facing away from the side with a toothed ring 34 formed teeth 35th provided, for example - in FIG. 1a -
- a housing-fixed, formed as an inner ring gear 36 counter-structure 37 of a housing part 38 is engaged, which rotatably locks the locking body 32.
- the locking body 32 By projections, not shown, of the locking body 32 at the inner radius, which engage in longitudinal grooves, not shown, in the lateral surface of the receiving body 2, the locking body 32 is rotationally fixed, but mounted axially displaceable. Is the locking body 32 arranged as in FIG. 1a shown, the teeth 35 of the locking body 32 engages in the counter-structure 37 of the housing part 38, is supported there, so that with the locking body 32 also the receiving body 2 and optionally a tool shaft 4 introduced into the receiving body 2 is rotationally locked. An arranged between the locking member 11 and the locking body 32, designed as a compression spring 39 spring means 40 biases the locking member 11 in the direction of the locking position and the locking body 32 in the direction of the rotationally fixed position.
- the locking element 11 is formed as a common component 41, which determines the axial locking of the tool shaft 4 in the receiving body 2 and the rotational lock of the receiving body 2 or controls.
- the control of the axial locking results directly from the fact that the locking sleeve 10 forms the common component 41.
- the gate 42 and the projection 43 together form a rear handle structure for axially displacing the locking body 32 between the rotationally fixed position and the rotatable position of the locking body 32 and thus the receiving body 2.
- FIG. 1b By rotating the common component 41 is in accordance with FIGS. 4a to d the locking body 32 is first axially displaced in the direction of the end 29 of the tool holder 1 (arrow 44) until the toothing 35 and the counter-structure 37 are no longer in operative engagement with each other. This is the one in the FIG. 1 b illustrated situation.
- the common component 41 in this case of the locking element 11
- the locking body 32 and with it the receiving body 2 is rotated and can thus be shifted back in a direction of rotation rotational position by the compression spring 39.
- the FIG. 1b essentially corresponds to the FIG. 1a , however, shows the Locking body 32 in the axially displaced, rotatable position.
- the user pushes the control sleeve 27 axially from the position shown in the figures in the direction of the locking element 11, wherein the control element 28 axially entrains the locking element 11 until the locking pin 19 lies on the tool side behind the release element 23 in the groove 26 and thereby on the release element 23rd (the ball 22) is applied.
- the operator then releases the operating element 28, whereupon the latter returns to its starting position due to the restoring force of the spring element, not shown.
- the Locking element 11 is not locked axially by the release member 23 and the locking pin 19, since the locking pin 19 laterally abuts the release member 23, while the release member 23 is pressed by the lateral surface of the tool shank 4 to the outside.
- FIGS. 2a to c show the analogous positions of the locking element 11 and the locking body 32 for a further embodiment of the tool holder 1.
- the locking element 11 and the common component 41 is not integrally formed, but has the outer sleeve 17 as a separate component. In this embodiment, therefore, the outer sleeve 17 is the common component 41.
- the functions of the first embodiment ( FIGS. 1a to c ) and the second embodiment ( FIGS. 2a to c ) correspond to each other.
- FIGS. 3a to c show a third embodiment of the tool holder 1 according to the invention, which essentially corresponds to that of the second embodiment and has a locking element 11 with a separate outer sleeve 17.
- the locking body 32 of the third embodiment is designed in several parts and has a spring element 45 designed as a compression spring, a detent disk 46 and a catch nose 47.
- the locking body 32 does not engage directly via a toothing 35 in a counter-structure 37 of the housing part 38, but presses the locking disk 46 with a toothing 48 via the spring element 45 in a counter-structure 37 of the housing part 38 common component 41 is rotated clockwise.
- the locking body 32 is taken and pulls with its catch nose 47, the locking disk 46 from the counter-structure 37 of the housing part 38.
- With further rotation of the common component 41 engages a defined driving point of the link 42 and rotates the locking body 32 and the receiving body 2. Energized by the spring element 45th slides the locking disk 46 in the next gear position, the housing part 38
- FIGS. 4a to d show four possible variants of curve contours 49 of a link 42 and a corresponding curve contour of the projection 43 of the locking body 32. If the common component 41 is rotated (arrow 50) so the projection 43 and thus the locking body 32 is axially displaced in the direction of the end 29, to the toothing 35 and the counter-structure 37 are no longer in operative engagement with each other, so that the locking body 32 can rotate with the common component 41.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
Die Erfindung betrifft eine Werkzeugaufnahme gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a tool holder according to the preamble of
Um mit einem Werkzeug, wie zum Beispiel einem Flachmeißel, in verschiedenen Drehstellungen meißeln zu können, ist es bekannt einen Bohr- und/oder Meißelhammer mit einer Werkzeugaufnahme zu versehen, die einen Werkzeugwechsel ermöglicht und bei der das Werkzeug in verschiedene Drehpositionen verstellt und verriegelt werden kann. Die
Bei einer Werkzeugaufnahme nach
Es ist weiter aus
Mit Vorteil gegenüber der Offenbarung des
Vorteilhafterweise kann vorgesehen werden, dass der Verriegelungskörper eine Verzahnung aufweist, mit der er sich in einer drehfesten Position in einer Gegenstruktur eines Gehäuseteils abstützt. Dazu kann die Gegenstruktur des Gehäuseteils als ein in der drehfesten Position in die Verzahnung greifende Gegenverzahnung ausgebildet sein, die durch Formschluss eine drehfeste Lagerung des Verriegelungskörpers im Gehäuseteil bewirkt. Der Rastring kann mit Vorteil eine Verzahnung mit im Querschnitt zumindest teilweise trapezförmigen Ausnehmungen und/oder trapezförmigen Zähnen besitzen, über die große Drehmomente übertragen werden können.Advantageously, it can be provided that the locking body has a toothing, with which it is supported in a rotationally fixed position in a counter-structure of a housing part. For this purpose, the counter-structure of the housing part can be designed as a counter-toothing which engages in the toothing in the rotationally fixed position and which caused by positive locking a rotationally fixed mounting of the locking body in the housing part. The locking ring can advantageously have a toothing with at least partially trapezoidal recesses and / or trapezoidal teeth through which large torques can be transmitted.
Weiterhin kann vorgesehen werden, dass das gemeinsame Bauteil und der Verriegelungskörper eine Hintergriff-Struktur zum axialen Verlagern des Verriegelungskörpers zwischen der drehfesten Position und einer drehbaren Position des Verriegelungskörpers und zum Verdrehen des Verriegelungskörpers bilden. Die Hintergriff-Struktur hat dabei die Aufgabe, den Verriegelungskörper aus der drehfesten Position axial in eine drehbare Position zu verlagern, ihn anschließend zusammen mit dem Aufnahmekörper zu verdrehen und schließlich zurück in die drehfeste Position zu verlagern. Der Verriegelungskörper ist dabei insbesondere ein Rastring. Mit einem Rastring kann eine kurze Baulänge erreicht und ein radialer Abstand zwischen dem Aufnahmekörper und dem gemeinsamen Bauteil überbrückt werden. Befindet sich der Verriegelungsbereich zur gehäusefesten Drehverriegelung des als Rastring ausgebildeten Verriegelungskörpers im Bereich des radial äußeren Durchmessers, so kann zum Erreichen eines Kraft- und/oder Formschlusses eine besonders große Übertragungsfläche genutzt werden.Furthermore, it can be provided that the common component and the locking body form a rear grip structure for axially displacing the locking body between the rotationally fixed position and a rotatable position of the locking body and for rotating the locking body. The rear handle structure has the task of axially displacing the locking body from the non-rotatable position into a rotatable position, then rotating it together with the receiving body and finally shifting it back into the rotationally fixed position. The locking body is in particular a locking ring. With a locking ring a short overall length can be achieved and a radial distance between the receiving body and the common component can be bridged. If the locking area for the housing-fixed rotational locking of the locking body designed as a latching ring is in the region of the radially outer diameter, a particularly large transfer area can be used to achieve a positive and / or positive fit.
Mit Vorteil kann die Hintergriff-Struktur als eine Kulisse des gemeinsamen Bauteils ausgebildet werden, in die ein Vorsprung des Verriegelungskörpers eingreift. Die Kulisse und der Vorsprung weisen dazu eine korrespondierende Kurvenkontur auf, die dafür sorgt dass der Verriegelungskörper zunächst axial verlagert und dann drehverlagert wird.Advantageously, the rear grip structure can be formed as a backdrop of the common component, in which engages a projection of the locking body. The backdrop and the projection have a corresponding curve contour, which ensures that the locking body initially displaced axially and then rotatably displaced.
Nach einer optionalen Weiterbildung der Erfindung ist ein Verriegelungselement zur axialen Verriegelung des Werkzeugschafts in der Einführöffnung vorgesehen, das zwischen einer Verriegelungsstellung und einer Entriegelungsstellung axial beweglich ist. Dabei wird diese Bewegung von der Position des gemeinsamen Bauteils gesteuert.According to an optional development of the invention, a locking element for axial locking of the tool shaft is provided in the insertion opening, which between a locking position and a Unlocked position is axially movable. In this case, this movement is controlled by the position of the common component.
Weiterhin kann ein verdrehbares und/oder axial verschiebbares Bedienelement zum axialen Verschieben und/oder Verdrehen des gemeinsamen Bauteils vorgesehen werden. Das Bedienelement ist bevorzugt als Bedienhülse ausgeführt, die zumindest einen Teil des gemeinsamen Bauteils mantelförmig umgibt. Das Bedienelement ist vorzugsweise durch ein Federelement in axialer Richtung vorgespannt, um eine Ruhestellung festzulegen. Eine Bewegung des Bedienelements (axiale Bewegung und/oder Drehbewegung) kann dann auf das Verriegelungselement übertragen werden, was beispielsweise dadurch erfolgt, dass das Bedienelement das gemeinsame Bauteil mitnimmt. Alternativ ist das Bedienelement starr oder elastisch mit dem gemeinsamen Bauteil gekoppelt, sodass die Bewegung des Bedienelements auf das gemeinsame Bauteil übertragen wird.Furthermore, a rotatable and / or axially displaceable operating element for axial displacement and / or rotation of the common component can be provided. The operating element is preferably designed as an operating sleeve, which surrounds at least a part of the common component shell-shaped. The operating element is preferably biased by a spring element in the axial direction to define a rest position. A movement of the operating element (axial movement and / or rotational movement) can then be transmitted to the locking element, which takes place, for example, in that the operating element entrains the common component. Alternatively, the control element is rigidly or elastically coupled to the common component, so that the movement of the operating element is transmitted to the common component.
Weiterhin kann mindestens ein in dem Verriegelungselement gelagerter und zwischen einer Arretierstellung und einer Freigabestellung radial verschiebbarer Arretierungsbolzen vorgesehen werden, der das Verriegelungselement in seiner Arretierstellung axial arretiert und in seiner Freigabestellung axial freigibt. In der Arretierstellung des Arretierungsbolzens wird das Verriegelungselement in der Entriegelungsstellung arretiert, sodass der Werkzeugschaft in die Werkzeugaufnahme eingeführt oder aus der Werkzeugaufnahme entnommen werden kann, ohne dass der Benutzer dabei das Verriegelungselement festhalten muss (Einhandbedienung). In der Freigabestellung des Arretierungsbolzens erfolgt dagegen keine Arretierung des Verriegelungselements in der Entriegelungsstellung, wodurch der Werkzeugschaft in der Werkzeugaufnahme axial verriegelt wird. Zum Lösen der Arretierung wird der Arretierungsbolzen insbesondere durch axiale Verlagerung des Werkzeugschafts aus seiner Arretierstellung gelöst. Die Verlagerungsbewegung des Werkzeugschafts bei der Entnahme aus der Werkzeugaufnahme oder beim Einführen des Werkzeugschafts in die Werkzeugaufnahme wird dabei auf den Arretierungsbolzen übertragen, wodurch sich dieser aus der Arretierstellung löst.Furthermore, at least one locking bolt mounted in the locking element and radially displaceable between a locking position and a release position can be provided, which axially locks the locking element in its locking position and releases it axially in its release position. In the locking position of the locking bolt, the locking element is locked in the unlocked position, so that the tool shaft can be inserted into the tool holder or removed from the tool holder without the user having to hold the locking element (one-hand operation). In the release position of the locking bolt, however, there is no locking of the locking element in the unlocked position, whereby the tool shaft is axially locked in the tool holder. To release the locking the locking pin is released in particular by axial displacement of the tool shaft from its locked position. The displacement movement of the tool shank during removal from the tool holder or when inserting the tool shaft in the tool holder is thereby transferred to the locking pin, causing this dissolves from the locked position.
Mit Vorteil kann ein Federelement vorgesehen werden, das den Arretierungsbolzen in Richtung der Arretierstellung vorspannt. Dabei liegt der Arretierungsbolzen in der Arretierstellung insbesondere an einem Axialanschlag in dem Aufnahmekörper an. Aufgrund der Federvorspannung verlagert sich der Arretierungsbolzen selbstständig in die Arretierstellung, wenn der Benutzer das Verriegelungselement aus der Verriegelungsstellung in die Entriegelungsstellung bewegt. Zur Arretierung des Verriegelungselements ist dabei in der Entriegelungsstellung kein Benutzereingriff erforderlich, wodurch die Bedienung wesentlich vereinfacht wird.Advantageously, a spring element can be provided which biases the locking pin in the direction of the locking position. In this case, the locking pin is in the locking position in particular at an axial stop in the receiving body. Due to the spring preload, the locking pin moves automatically into the locking position when the user moves the locking element from the locking position to the unlocked position. To lock the locking element while no user intervention is required in the unlocking, whereby the operation is much easier.
Nach einer optionalen Weiterbildung der Erfindung ist ein in dem Aufnahmekörper radial verschiebbar gelagertes Freigabeelement zum Lösen des Arretierungsbolzens aus der Arretierstellung vorgesehen. Dabei ist das Freigabeelement durch den Werkzeugschaft radial nach außen gegen den Arretierungsbolzen verschiebbar. Hierzu ist zur Kraftübertragung von dem Werkzeugschaft auf den Arretierungsbolzen insbesondere ein als Kugel ausgebildetes Freigabeelement vorgesehen, das radial in die Einführöffnung der Werkzeugaufnahme hineinragt und beim Einführen oder bei der Entnahme des Werkzeugschafts radial nach außen verschoben wird und dabei den Arretierungsbolzen radial nach außen drückt. Bei einer Ausbildung des Freigabeelements als eine Kugel, die in einem Durchbruch in dem Aufnahmekörper radial verschiebbar gelagert ist, ist der Durchbruch vorzugsweise konisch nach innen verjüngt. Diese Form verhindert, dass die Kugel nach innen herausfällt, wenn sich kein Werkzeugschaft in der Werkzeugaufnahme befindet.According to an optional development of the invention, a radially slidably mounted in the receiving body release element for releasing the locking pin is provided from the locking position. In this case, the release element is displaceable by the tool shank radially outward against the locking pin. For this purpose, in particular designed as a ball release member is provided for transmitting power from the tool shank on the locking pin, which projects radially into the insertion of the tool holder and is displaced radially outwardly during insertion or removal of the tool shaft and thereby presses the locking pin radially outward. In an embodiment of the release element as a ball, which is mounted radially displaceably in an opening in the receiving body, the opening is preferably tapered inwardly. This shape prevents the ball from falling out when no tool shank is in the tool holder.
Weiterhin kann eine Federeinrichtung vorgesehen werden, die das Verriegelungselement in Richtung der Verriegelungsstellung und/oder den Verriegelungskörper in Richtung der Drehfesten Position axial vorspannt. Durch ein derart vorgespanntes Verriegelungselement wird ein unbeabsichtigtes Entriegeln des Werkzeugschafts beziehungsweise ein unbeabsichtigtes entriegeln der Drehverriegelung verhindert.Furthermore, a spring device can be provided, which axially biases the locking element in the direction of the locking position and / or the locking body in the direction of the rotationally fixed position. By such a biased locking element unintentional unlocking of the tool shank or unintentional unlocking the rotary lock is prevented.
Mit Vorteil kann vorgesehen werden, dass in dem Aufnahmekörper zur axialen Verriegelung des Werkzeugschafts mindestens ein radial verschiebbarer Sperrkörper angeordnet ist, der in der Verriegelungsstellung des Verriegelungselements in Längsnuten des Werkzeugschafts eingreifen kann. Der in den Aufnahmekörper eingeführte Werkzeugschaft wird durch den Sperrkörper axial verriegelt, wobei dieser in eine Längsnut des Werkzeugschafts eingreift, sodass der Werkzeugschaft im verriegelten Zustand nur einen bestimmten Bewegungsspielraum in axialer Richtung aufweist. Befindet sich das Verriegelungselement in der Verriegelungsstellung, so verhindert es ein radiales Ausweichen des Sperrkörpers. Wenn sich das Verriegelungselement - in Abhängigkeit von der Position des gemeinsamen Bauteils - in der Entriegelungsstellung befindet, kann der Sperrkörper radial nach außen ausweichen und der Werkzeugschaft des Werkzeugs kann aus der Werkzeugaufnahme entnommen oder in die Werkzeugaufnahme eingeführt werden. Mit Vorteil sind die Sperrkörper als Verriegelungsrollen ausgebildet, die in ihrer Funktion wenig verschleißen.Advantageously, it can be provided that at least one radially displaceable locking body is arranged in the receiving body for axial locking of the tool shaft, which can engage in longitudinal grooves of the tool shank in the locking position of the locking element. The introduced into the receiving body tool shank is axially locked by the locking body, which engages in a longitudinal groove of the tool shank, so that the tool shank has only a certain range of movement in the axial direction in the locked state. The locking element is in the locked position, so it prevents a radial deflection of the locking body. If the locking element - in response to the position of the common component - is in the unlocked position, the locking body can escape radially outward and the tool shank of the tool can be removed from the tool holder or inserted into the tool holder. Advantageously, the locking body are designed as locking rollers that wear little in their function.
Weiterhin kann vorgesehen werden, dass das Verriegelungselement das gemeinsame Bauteil ist oder das gemeinsame Bauteil aufweist. Ist das Verriegelungselement einstückig ausgebildet und steuert/bestimmt die Position und Ausrichtung des Verriegelungskörpers, so ist das Verriegelungselement das gemeinsame Bauteil. Weist das Verriegelungselement ein Bauteil auf, das die Position und Ausrichtung des Verriegelungskörpers bestimmt, so weist das Verriegelungselement das gemeinsame Bauteil auf.Furthermore, it can be provided that the locking element is the common component or has the common component. If the locking element is formed in one piece and controls / determines the position and orientation of the locking body, then the locking element is the common component. If the locking element has a component which determines the position and orientation of the locking body, then the locking element has the common component.
Schließlich umfasst die Erfindung auch eine Werkzeugmaschine, insbesondere einen Bohr- und/oder Meißelhammer, mit einer erfindungsgemäßen Werkzeugaufnahme.Finally, the invention also includes a machine tool, in particular a drill and / or chisel hammer, with a tool holder according to the invention.
Die Zeichnungen veranschaulichen die Erfindung anhand mehrerer Ausführungsbeispiele, und zwar zeigt:
- Figur 1a
- eine Schnittdarstellung einer Werkzeugaufnahme in drehfester Position und Verriegelungsstellung,
- Figur 1 b
- eine Schnittdarstellung der Werkzeugaufnahme aus
in drehbarer Position und Verriegelungsstellung,Figur 1 - Figur 1 c
- eine Schnittdarstellung der Werkzeugaufnahme aus
Figur 1a in drehfester Position und Entriegelungsstellung, - Figuren 2a bis c
- Schnittdarstellungen eines zweiten Ausführungsbeispiels einer erfindungsgemäßen Werkzeugaufnahme entsprechend den
Figuren 1a bis c , - Figuren 3a bis c
- Schnittdarstellung eines dritten Ausführungsbeispiels einer erfindungsgemäßen Werkzeugaufnahme entsprechend den
Figuren 1a bis c und - Figuren 4a bis d
- schematische Darstellungen der Steuerung eines Verriegelungskörpers durch ein gemeinsames Bauteil.
- FIG. 1a
- a sectional view of a tool holder in a rotationally fixed position and locking position,
- Figure 1 b
- a sectional view of the tool holder
FIG. 1 in a rotatable position and locking position, - Figure 1 c
- a sectional view of the tool holder
FIG. 1a in non-rotating position and unlocking position, - FIGS. 2a to c
- Sectional views of a second embodiment of a tool holder according to the invention according to the
FIGS. 1a to c . - FIGS. 3a to c
- Sectional view of a third embodiment of a tool holder according to the invention according to the
FIGS. 1a to c and - FIGS. 4a to d
- schematic representations of the control of a locking body by a common component.
Die
Im ersten, in den
Zur Verriegelung des Werkzeugschafts 4 im Aufnahmekörper 2 ergibt sich folgende Funktion: Beim axialen Einführen des Werkzeugschafts 4 in die Einführöffnung 3 drückt der Werkzeugschaft die Verriegelungsrollen 7 radial nach außen, bis die Verriegelungsrolle 7 in einer Arretierposition des Werkzeugschafts 4 in die Längsnut 9 des Werkzeugschafts 4 eingreift (
Die
Die
Die
Es ergibt sich folgende Funktion: Bei der in
Claims (13)
- Tool receptacle (1), in particular for a rotary and/or demolition hammer, comprising a receptacle body (2) which has an insertion opening (3) for receiving a tool shank (4), comprising a component (41), wherein the component (41), in an axially movable manner relative to the receptacle body (2), serves as a locking control element for axially locking the tool shank (1) in the insertion opening (3), and wherein the component (41), in a rotatably mounted manner relative to the receptacle body (2), serves as a locking control body for rotationally locking the receptacle body (2), and comprising a locking body (32) which is mounted on the receptacle body (2) in a rotationally fixed manner and is intended for rotationally locking the receptacle body (2), characterized in that the locking body (32) is mounted on the receptacle body (2) in an axially movable manner and can be moved between a rotationally fixed position and a rotatable position.
- Tool receptacle according to Claim 1,
characterized in that the locking body (32) has a tooth system (35) with which it is supported in the rotationally fixed position in a mating structure (37) of a housing part (38). - Tool receptacle according to either of the preceding claims, characterized in that the common component (41) and the locking body (32) form a rear-engagement structure for axially displacing the locking body (32) between the rotationally fixed position and the rotatable position of the locking body (32) and for rotating the locking body (32).
- Tool receptacle according to Claim 3,
characterized in that the rear-engagement structure is formed by a gate (42) of the common component (41) and a projection of the locking body. - Tool receptacle according to one of the preceding claims, characterized in that a locking element (11) is provided for axially locking the tool shank (4) in the insertion opening (3), said locking element (11) being axially movable between a locking position and an unlocking position.
- Tool receptacle according to one of the preceding claims, characterized by a rotatable and/or axially displaceable operating element (28) for axially displacing and/or rotating the common component (41).
- Tool receptacle according to one of the preceding claims and at least according to Claim 5, characterized by at least one arresting pin (19) which is mounted in the locking element (11), is radially displaceable between an arresting position and a release position and axially arrests the locking element (11) in the arresting position thereof and axially releases the locking element (11) in the release position thereof.
- Tool receptacle according to Claim 7,
characterized by a spring element (21) which preloads the arresting pin (19) in the direction of the arresting position. - Tool receptacle according to Claim 7 or 8,
characterized by a release element (23) mounted in a radially displaceable manner in the receptacle body (2) for releasing the arresting pin (19) from the release position. - Tool receptacle according to one of the preceding claims and at least according to Claim 5, characterized by a spring device (40) which axially preloads the locking element (32) in the direction of the locking position and/or the locking body (32) in the direction of the rotationally fixed position.
- Tool receptacle according to one of the preceding claims and at least according to Claim 5, characterized in that at least one radially displaceable blocking body (8) is arranged in the receptacle body (2) for axially locking the tool shank (4), which blocking body (8) can engage in a longitudinal groove (9) of the tool shank (4) in the locking position of the locking element (11).
- Tool receptacle according to one of the preceding claims and at least according to Claim 5, characterized in that the locking element (11) is the common component (41) or has the common component (41).
- Power tool, in particular a rotary and/or demolition hammer, having a tool receptacle according to one or more of the preceding claims.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006036955A DE102006036955A1 (en) | 2006-08-08 | 2006-08-08 | tool holder |
PCT/EP2007/056068 WO2008017539A1 (en) | 2006-08-08 | 2007-06-19 | Tool receptacle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2051836A1 EP2051836A1 (en) | 2009-04-29 |
EP2051836B1 true EP2051836B1 (en) | 2010-05-12 |
Family
ID=38472855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07730245A Not-in-force EP2051836B1 (en) | 2006-08-08 | 2007-06-19 | Tool receptacle |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100147542A1 (en) |
EP (1) | EP2051836B1 (en) |
CN (1) | CN101500763A (en) |
DE (2) | DE102006036955A1 (en) |
RU (1) | RU2009107893A (en) |
WO (1) | WO2008017539A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013216516B4 (en) * | 2013-08-21 | 2024-09-19 | Robert Bosch Gmbh | Hand tool machine tool holder |
US11117249B2 (en) * | 2018-05-23 | 2021-09-14 | Illinois Tool Works Inc. | Powered fastener driving tool |
DE102020201243B3 (en) * | 2020-01-31 | 2021-04-22 | Deprag Schulz Gmbh U. Co. | Quick-change chuck for reversible locking of an insert tool on a processing device |
DE102020213165A1 (en) | 2020-10-19 | 2022-04-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hand tool machine with a locking device |
Family Cites Families (26)
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US2854238A (en) * | 1956-03-22 | 1958-09-30 | Ingersoll Rand Co | Tool retainer with rotary sleeve |
DE2650134A1 (en) * | 1976-10-30 | 1978-05-11 | Bosch Gmbh Robert | TOOL SHAFT |
AT377459B (en) * | 1981-06-29 | 1985-03-25 | Siderurgie Fse Inst Rech | METHOD FOR CONTINUOUSLY POOLING MELT-LIQUID METAL ROTATING IN A CHOCOLATE, AND DEVICE FOR CARRYING OUT THE METHOD |
US4692073A (en) * | 1985-02-25 | 1987-09-08 | Martindell J Richard | Handle adapter and chuck apparatus for power bits |
DE3539912A1 (en) * | 1985-11-11 | 1987-05-14 | Hilti Ag | TOOL HOLDER FOR DRILLING AND CHISEL TOOLS |
DE3716915A1 (en) * | 1987-05-20 | 1988-12-08 | Bosch Gmbh Robert | DEVICE ON HAND MACHINE TOOLS FOR TORQUE TRANSMISSION |
DE3721771A1 (en) * | 1987-07-01 | 1989-01-12 | Hilti Ag | HAND DEVICE |
DE3824894A1 (en) * | 1988-07-22 | 1990-01-25 | Bosch Gmbh Robert | DEVICE ON HAND MACHINE TOOLS FOR TORQUE TRANSMISSION |
DE4100186A1 (en) * | 1991-01-05 | 1992-07-09 | Bosch Gmbh Robert | HAND MACHINE TOOL WITH REMOVABLE TOOL HOLDER |
DE9305463U1 (en) * | 1993-04-10 | 1993-06-24 | Crones & Co GmbH, 8800 Ansbach | Tool holder for hand impact tools, especially chisel hammers |
DK130593D0 (en) * | 1993-11-19 | 1993-11-19 | Joran Bor A S | DRILL SETUP SYSTEM |
DE4340728C1 (en) * | 1993-11-30 | 1995-01-26 | Bosch Gmbh Robert | Device on powered hand tools for the rotary driving of tools |
DE4418103A1 (en) * | 1994-05-24 | 1995-11-30 | Hilti Ag | Drilling and / or chiseling device |
DE19503525B4 (en) * | 1995-02-03 | 2004-10-28 | Robert Bosch Gmbh | Hand tool, in particular drill and / or hammer |
JP3606021B2 (en) * | 1996-12-13 | 2005-01-05 | 日立工機株式会社 | Impact tool |
JPH11104974A (en) * | 1997-10-06 | 1999-04-20 | Makita Corp | Hammering tool |
DE10001193B4 (en) * | 2000-01-14 | 2005-10-20 | Bosch Gmbh Robert | Hand tool with a tool holder for fixing the tool in the direction of rotation |
JP2001225282A (en) * | 2000-02-10 | 2001-08-21 | Hitachi Koki Co Ltd | Tool holding device for impact tool |
CA2339430A1 (en) * | 2000-03-10 | 2001-09-10 | Black & Decker Inc. | Hammer |
US6651990B2 (en) * | 2001-08-06 | 2003-11-25 | Ryobi Ltd. | Tool holder |
GB0121947D0 (en) * | 2001-09-12 | 2001-10-31 | Black & Decker Inc | Tool holder for hammer |
DE10152959B4 (en) * | 2001-10-26 | 2007-03-15 | Robert Bosch Gmbh | Hand tool |
DE10163176A1 (en) * | 2001-12-21 | 2003-07-03 | Hilti Ag | Impact tool holder |
US7527272B2 (en) * | 2002-09-18 | 2009-05-05 | Robert Bosch Gmbh | Chuck |
DE102005010265A1 (en) * | 2005-03-07 | 2006-09-14 | Robert Bosch Gmbh | Tool holder and hand tool |
DE102005000168A1 (en) * | 2005-11-25 | 2007-05-31 | Hilti Ag | tool holder |
-
2006
- 2006-08-08 DE DE102006036955A patent/DE102006036955A1/en not_active Withdrawn
-
2007
- 2007-06-19 EP EP07730245A patent/EP2051836B1/en not_active Not-in-force
- 2007-06-19 US US12/160,799 patent/US20100147542A1/en not_active Abandoned
- 2007-06-19 CN CNA2007800292614A patent/CN101500763A/en active Pending
- 2007-06-19 DE DE502007003774T patent/DE502007003774D1/en active Active
- 2007-06-19 WO PCT/EP2007/056068 patent/WO2008017539A1/en active Application Filing
- 2007-06-19 RU RU2009107893/02A patent/RU2009107893A/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP2051836A1 (en) | 2009-04-29 |
CN101500763A (en) | 2009-08-05 |
US20100147542A1 (en) | 2010-06-17 |
RU2009107893A (en) | 2010-09-20 |
DE502007003774D1 (en) | 2010-06-24 |
DE102006036955A1 (en) | 2008-02-14 |
WO2008017539A1 (en) | 2008-02-14 |
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