EP2051836A1 - Support pour outil - Google Patents

Support pour outil

Info

Publication number
EP2051836A1
EP2051836A1 EP07730245A EP07730245A EP2051836A1 EP 2051836 A1 EP2051836 A1 EP 2051836A1 EP 07730245 A EP07730245 A EP 07730245A EP 07730245 A EP07730245 A EP 07730245A EP 2051836 A1 EP2051836 A1 EP 2051836A1
Authority
EP
European Patent Office
Prior art keywords
locking
tool holder
axially
tool
holder according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07730245A
Other languages
German (de)
English (en)
Other versions
EP2051836B1 (fr
Inventor
Andreas Strasser
Lars Schmid
Peter Loehnert
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2051836A1 publication Critical patent/EP2051836A1/fr
Application granted granted Critical
Publication of EP2051836B1 publication Critical patent/EP2051836B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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, in particular for a drill and / or chisel, with a receiving body having an insertion opening for receiving a tool shank, an axially movable locking control element for axial locking of the tool shaft in the insertion and with a rotatably mounted locking control body for rotational locking of receiving body.
  • DE 100 01 193 A1 has a tool holder for a machine tool, in which a locking control element is moved axially with a first actuating sleeve for the axial locking and unlocking of a tool shaft 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.
  • the locking 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.
  • a locking body rotatably mounted on the receiving body is provided for the 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 advantageously has a toothing with at least partially trapezoidal recesses and / or trapezoidal teeth, via which large torques can be transmitted.
  • the common component and the locking body has a rear handle structure for axially displacing the locking body between the rotationally fixed position and a rotatable position of the locking body and the
  • 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.
  • Locking body is in particular a locking ring.
  • 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 is 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, 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 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 of 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.
  • 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.
  • Tool shank displaced radially outward against the locking pin.
  • a ball release element is provided for transmitting power from the tool shank on the locking pin, which projects radially into the insertion opening of the tool holder and the
  • 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 is 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, which can engage in the locking position of the locking element in longitudinal grooves of the tool shank.
  • 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.
  • FIG. 1a shows a sectional view of a tool holder in a rotationally fixed position and locking position
  • FIG. 1 b is a sectional view of the tool holder of FIG. 1 in a rotatable position and locking position
  • FIG. 1c is a sectional view of the tool holder of FIG. 1a in a rotationally fixed position and an unlocked position;
  • FIGS. 2a to c are sectional views of a second embodiment of a tool holder according to the invention corresponding to FIGS. 1a to c,
  • FIG. 3a to c are sectional views of a third embodiment of a tool holder according to the invention according to the figures 1a to c and
  • Figures 4a to d are schematic representations of the control of a locking body by a common component.
  • Embodiment (s) of the invention are schematic representations of the control of a locking body by a common component.
  • Figures 1a to 1c show a tool holder 1 for a hammer drill and / or a chisel hammer.
  • the tool holder 1 for a hammer drill and / or a chisel hammer.
  • Tool holder 1 a substantially hollow cylindrical receiving body 2 with an insertion opening 3, in which a tool shank 4 of a not fully shown tool 5 rests.
  • the receiving body 2 has distributed over the circumference a plurality of apertures 6, in each of which a
  • Locking roller 7 formed locking body 8 rests, wherein the apertures 6 taper inward in the radial direction.
  • the tool shank 4 has in its lateral surface on the axial section with the locking roller 7 beyond longitudinal groove 9, in which engages the locking roller 7.
  • 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. in the
  • 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.
  • 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.
  • Dust seal 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
  • the latching ring 31 is provided on the outer circumference of its workpiece in the side facing away from the workpiece formed with a toothed ring 34 teeth 35 which - for example in Figure 1a - in operative engagement with a housing-fixed, designed as an inner ring gear 36th Counter-structure 37 of a housing part 38 is engaged, which rotatably locks the locking body 32.
  • a housing-fixed designed as an inner ring gear 36th
  • Counter-structure 37 of a housing part 38 is engaged, which rotatably locks the locking body 32.
  • projections of the locking body 32 at its 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. If the locking body 32 is arranged as shown in FIG.
  • the locking element 11 is designed as a common component 41 which determines or controls the axial locking of the tool shaft 4 in the receiving body 2 and the rotational locking of the receiving body 2.
  • the control of the axial locking results directly from the fact that the locking sleeve 10 forms the common component 41.
  • the common component 41 at the height of the latching body 32 designed as a latching ring 32 has a slotted guide 42 shown in FIGS. 4a to 4d, in which a projection 43 of the latching element 32 engages.
  • the link 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.
  • the common component 41 is according to Figures 4a to d of the locking body 32 first axially displaced in the direction of the end 29 of the tool holder 1 (arrow 44) until the teeth 35 and the counter-structure 37 are no longer in operative engagement with each other. This is the situation illustrated in FIG. 1 b.
  • the common component 41 in this case the locking element 11
  • FIG. 1b essentially corresponds to FIG. 1a, but shows the FIG Locking body 32 in the axially displaced, rotatable position.
  • Locking element 11 axially into the locking position shown in Figure 1a, wherein the locking pin 19 is guided in the groove 25.
  • the locking element 11 covers with its inside from the opening 6 of the locking body 8, which thus can no longer dodge radially outward and lock the tool shaft 4 axially.
  • the tool shank 4 is locked in its insertion into the receiving body 2 without further user intervention.
  • the locking element To remove the tool shaft 4 from the receiving body 2, the locking element must first be brought from the locking position shown in Figure 1a in the unlocking position shown in Figure 1c.
  • 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
  • Figures 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 formed in one piece, but has the outer sleeve 17 as a separate component. In this embodiment, therefore, the outer sleeve 17 is the common component 41.
  • FIGS. 3 a to c show a third exemplary embodiment of the tool holder 1 according to the invention, which substantially corresponds to that of the second exemplary 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 38th
  • FIGS. 4a to d show four possible variants of
  • Curve contours 49 of a gate 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 until the teeth 35 and Counterstructure 37 are no longer in operative engagement with each other, so that the locking body 32 can rotate with the common component 41.
  • the slide 42 In the variants of FIGS. 4a and 4b, the slide 42 is only rotatable in one direction (arrow 50), while in the variant of the slide 42 shown in FIGS. 4c and 4d twisting in both directions (double arrow 51) is possible.
  • the locking body 32 is axially displaced by rotating the common component via an inclined edge 52.
  • the locking body 32 is axially displaced by rotation of the common component 41 via an arbitrary curve contour 53.
  • the locking body 32 is displaced axially by rotation of the common component 41 in both directions either via an oblique edge 52 or any curve contour 53.
  • the gate 42 shown in Figure 4d the locking body 32 by rotating the common component 41 in both directions via a repeating oblique flank 52 or any curve contour 53 axially displaced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

L'invention concerne un support pour outil (1), en particulier pour un marteau perforateur et/ou marteau burineur, composé d'un corps de support (2) présentant un orifice d'entrée (3) pour loger un corps d'outil (4), un élément de commande de verrouillage (41), qui peut être déplacé axialement en vue de verrouiller le corps d'outil (4) dans l'orifice d'entrée (3), et un corps de commande de verrouillage (41) pivotant, servant à verrouiller par rotation le corps de support (2). Selon l'invention, l'élément de commande de verrouillage et le corps de commande de verrouillage sont conçus comme composant (41) commun.
EP07730245A 2006-08-08 2007-06-19 Support pour outil Not-in-force EP2051836B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006036955A DE102006036955A1 (de) 2006-08-08 2006-08-08 Werkzeugaufnahme
PCT/EP2007/056068 WO2008017539A1 (fr) 2006-08-08 2007-06-19 Support pour outil

Publications (2)

Publication Number Publication Date
EP2051836A1 true EP2051836A1 (fr) 2009-04-29
EP2051836B1 EP2051836B1 (fr) 2010-05-12

Family

ID=38472855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07730245A Not-in-force EP2051836B1 (fr) 2006-08-08 2007-06-19 Support pour outil

Country Status (6)

Country Link
US (1) US20100147542A1 (fr)
EP (1) EP2051836B1 (fr)
CN (1) CN101500763A (fr)
DE (2) DE102006036955A1 (fr)
RU (1) RU2009107893A (fr)
WO (1) WO2008017539A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013216516B4 (de) * 2013-08-21 2024-09-19 Robert Bosch Gmbh Handwerkzeugmaschinenwerkzeugaufnahme
US11117249B2 (en) * 2018-05-23 2021-09-14 Illinois Tool Works Inc. Powered fastener driving tool
DE102020201243B3 (de) * 2020-01-31 2021-04-22 Deprag Schulz Gmbh U. Co. Schnellwechselfutter zur reversiblen Arretierung eines Einsteckwerkzeugs an einem Bearbeitungsgerät
DE102020213165A1 (de) 2020-10-19 2022-04-21 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung

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Also Published As

Publication number Publication date
EP2051836B1 (fr) 2010-05-12
CN101500763A (zh) 2009-08-05
US20100147542A1 (en) 2010-06-17
RU2009107893A (ru) 2010-09-20
DE502007003774D1 (de) 2010-06-24
DE102006036955A1 (de) 2008-02-14
WO2008017539A1 (fr) 2008-02-14

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