EP2139643A1 - Machine-outil à entraînement motorisé - Google Patents

Machine-outil à entraînement motorisé

Info

Publication number
EP2139643A1
EP2139643A1 EP08717196A EP08717196A EP2139643A1 EP 2139643 A1 EP2139643 A1 EP 2139643A1 EP 08717196 A EP08717196 A EP 08717196A EP 08717196 A EP08717196 A EP 08717196A EP 2139643 A1 EP2139643 A1 EP 2139643A1
Authority
EP
European Patent Office
Prior art keywords
tool
fastening device
shaft
machine tool
tool shaft
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.)
Withdrawn
Application number
EP08717196A
Other languages
German (de)
English (en)
Inventor
Adolf Zaiser
Jens Blum
Heiko Roehm
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 EP2139643A1 publication Critical patent/EP2139643A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/003—Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • 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
    • Y10T279/34—Accessory or component

Definitions

  • the invention relates to a motor-driven machine tool with a driven by a drive unit tool shaft for receiving a tool according to the preamble of claim 1.
  • DE 10 2004 050 798 A1 discloses a hand tool machine with an electric motor driven tool on a tool shaft, which exerts an oscillating rotary pendulum movement, whereby the possibility is opened to use the hand tool both for grinding and for cutting.
  • the tool is fastened by means of a fastening device on the front side of the tool shaft, wherein the fastening device comprises a contact flange on the tool shaft, which in a plane perpendicular to the axis of rotation of the
  • Tool shaft distributed over the circumference axially projecting interlocking elements, on which a mounting portion of the tool with correspondingly formed recesses is attachable. After attaching the tool to the interlocking elements of the contact flange, the tool is secured by means of a fastening screw.
  • the invention has for its object to simplify the replacement of the fastening device on a machine tool for fastening the tool.
  • the motor-driven machine tool which is in particular a hand tool with rotatably driven tool, has a tool shaft which is driven by a drive unit - usually an electric motor -, wherein on the front side of the tool shaft, a fastening device for receiving and fastening of the tool is provided.
  • the fastening device is detachably received on the tool shaft.
  • the fastening device forms the frontal extension of the tool shaft.
  • the fastening device is not pushed onto the shaft in this embodiment, but placed only on the front side of the shaft, which offers the advantage that a short machine tool in the axial direction can be realized.
  • a simple attachment of the fastening device on the end face of the shaft is possible by, for example, the fastening device has a circumferential annular shoulder, which on a corresponding paragraph is placed on the tool shaft.
  • connection between the fastening device and the tool shaft for example via friction; but also come into question other types of connection, in particular acting in the axial direction positive connection, which is realized for example via a bayonet closure, or a connection via other connection devices such as clamping devices or the like.
  • frictional, positive or cohesive connections or any combinations thereof can be selected.
  • Fastening element and the associated shoulder on the tool shaft is advantageously carried out a frictional engagement by the fastening device is annular and is pushed onto the shoulder on the tool shaft as a press fit.
  • the fastening device is annular, wherein in the end face of the tool shaft, a threaded hole is introduced, which is reached by the circular recess in the fastening device from the outside, so that even with attached fastening device, an additional component can be screwed into the threaded hole.
  • This additional component is, for example, another component of the fastening device for secure locking of the tool to the tool shaft.
  • auxiliary tool for releasing the fastening device expediently consists of a peeling device, which engages behind the fastening device on the tool shaft, and a supporting part on the peeling device, which in the position of use the
  • the support part is expediently - A -
  • the removal device of the auxiliary tool is arranged in relation to the fastening device such that the
  • Fastening device is engaged behind by the stripper, so that there is a positive connection in the axial direction. Subsequently, the executed as a threaded rod support member is screwed into the threaded recess on the front side of the tool shaft, then the stripping device can be rotated in the stationary position threaded rod in the release direction, due to the positive connection, the fastening device is axially released from the seat on the tool shaft.
  • the threaded rod can also be part of another
  • the threaded rod performs the function of a clamping part, which cooperates with a pressing device for acting on the fastening device in the fastening position.
  • This pressing device is advantageously designed as a nut, which rests on the external thread of the threaded rod.
  • FIG. 1 in a schematic representation of a
  • Hand tool with a drive shaft, the at the same time represents the tool shaft, on whose front side a fastening device is arranged for receiving and holding a tool,
  • Fig. 2 shows the tool shaft with frontally patched
  • Fig. 3 shows the hand tool with a cooperating
  • FIG. 4 shows the portable power tool with a further auxiliary tool which serves to arrange the fastening device on the end face of the tool shaft.
  • the hand tool 1 illustrated in FIG. 1 is, in particular, a cutting and grinding device, the tool of which can execute an oscillating rotary pendulum movement about the axis of rotation of the tool shaft.
  • the hand tool 1 has in a housing 2 an electric motor-driven tool shaft 3, which is rotatably received in the housing 2 via bearings 4 and 5.
  • a fastening ring 7 is frictionally mounted on the tool shaft 3, which optionally additionally or alternatively, a form-fitting comes into consideration, which may be formed for example in the manner of a bayonet closure.
  • a form-fitting comes into consideration, which may be formed for example in the manner of a bayonet closure.
  • At the free end face of the mounting ring 7 axially projecting, uniformly distributed over the circumference nubs 8, which corresponding recesses are assigned in a mounting plate of the tool 9.
  • Tool shaft 3 the mounting plate is pressed with the recesses on the studs 8 of the mounting ring.
  • the drive or tool shaft 2 and the mounting ring 7 form separately formed components which are to be connected to each other, wherein the mounting ring can be solved by the tool shaft 3 if necessary.
  • annular shoulder-shaped shoulder 10 On the front side of the tool shaft 3, an annular shoulder-shaped shoulder 10 is formed, which is adapted in terms of shape and size to the mounting ring 7 and on which the fastening ring can be pressed with frictional engagement.
  • the frictional engagement is chosen so that a sufficiently high frictional force between the fastening ring and the end face of the tool shaft, which reliably prevents undesired loosening of the fastening ring from the tool shaft during operation.
  • Fig. 2 the tool shaft 3 is shown with attached mounting ring in perspective detail view.
  • a threaded bore 3 is introduced, which is axially accessible via the circular recess in the mounting ring 7 from the outside.
  • the power tool 1 is shown with an auxiliary tool 13 for releasing the mounting ring 7 of the tool shaft 3.
  • the auxiliary tool 13 comprises a frame-shaped peeling device 14, which engages in the position of use the attached to the front side of the tool shaft 3 mounting ring 7.
  • the auxiliary tool 13 includes a threaded rod 15, which has the task of a support member and is guided in a threaded bore in the stripper and this protrudes.
  • the threaded rod 15 is screwed in use position in the end-side threaded bore 11 in the tool shaft 3.
  • the threaded hole in the stripper 14 is guided by a polygon 16, which performs the function of a force application part and on which the frame-shaped peeling device 14 is fixed.
  • the mounting ring 7 is formed in a respect to the embodiment of FIG. 2 alternative cross-sectional shape.
  • the fastening ring 7 has an upper, radially inwardly extending annular shoulder 12, which rests on an associated end shoulder on the tool shaft 3.
  • the power tool 1 is shown with a further auxiliary tool 18, which serves for arranging or pushing the fastening ring 7 on the end face 6 of the tool shaft 3.
  • This second auxiliary tool 18 comprises on the one hand the threaded rod 15, which has the function of a clamping part in the second auxiliary tool, by means of which the fastening ring 7 is guided and clamped for pushing, and a nut 19, which has the task of a pressing device and securing means, via the the fastening ring 7 is moved into its frontal position on the tool shaft 3.
  • the fastening ring is first attached to the threaded rod 15 and the latter subsequently screwed into the threaded bore 11 in the end face of the tool shaft.
  • the mounting ring 7 is secured axially against the nut 19 against loss, also the mounting ring 7 is subjected to force axially by a thrust washer 20 which rests axially loose on the threaded rod 15.
  • the nut 19 can then be rotated on the external thread of the threaded rod 15 by means of the socket wrench 17 shown in Fig. 3, whereby on the pressure plate 20 of the mounting ring 7 axially in his Working position on the front side of the tool shaft 3 is pushed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Sawing (AREA)
  • Harvester Elements (AREA)

Abstract

L'invention concerne une machine-outil à entraînement motorisé comportant un outil à entraîner en rotation et présentant un arbre d'outil sur la face avant duquel est prévu un dispositif de fixation permettant la mise en place et la fixation de l'outil. Ce dispositif de fixation est mis en place de manière amovible sur l'arbre d'outil. Un outil auxiliaire permettant de détacher le dispositif de fixation présente un organe d'extraction qui s'engage à l'arrière du dispositif de fixation sur l'arbre d'outil, et une pièce d'appui sur l'organe d'extraction qui, en position d'utilisation, sert de support à l'organe d'extraction en exerçant une force d'appui et de dégagement sur la machine-outil. Un autre outil auxiliaire permettant de placer le dispositif de fixation sur l'arbre d'outil présente une pièce de serrage qui, en position d'utilisation, doit être reliée solidement à la machine-outil, et un organe presseur permettant l'introduction du dispositif de fixation, l'organe presseur étant placé de manière réglable sur la pièce de serrage.
EP08717196A 2007-04-19 2008-02-27 Machine-outil à entraînement motorisé Withdrawn EP2139643A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018467A DE102007018467A1 (de) 2007-04-19 2007-04-19 Motorisch angetriebene Werkzeugmaschine
PCT/EP2008/052391 WO2008128813A1 (fr) 2007-04-19 2008-02-27 Machine-outil à entraînement motorisé

Publications (1)

Publication Number Publication Date
EP2139643A1 true EP2139643A1 (fr) 2010-01-06

Family

ID=39456428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08717196A Withdrawn EP2139643A1 (fr) 2007-04-19 2008-02-27 Machine-outil à entraînement motorisé

Country Status (6)

Country Link
US (1) US20090318065A1 (fr)
EP (1) EP2139643A1 (fr)
CN (1) CN101663131A (fr)
DE (1) DE102007018467A1 (fr)
RU (1) RU2009142435A (fr)
WO (1) WO2008128813A1 (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD623034S1 (en) 2009-12-18 2010-09-07 Techtronic Power Tools Technology Limited Tool arbor
USD619152S1 (en) 2009-12-18 2010-07-06 Techtronic Power Tools Technology Limited Adapter
US8925931B2 (en) 2010-04-29 2015-01-06 Black & Decker Inc. Oscillating tool
US9186770B2 (en) 2010-04-29 2015-11-17 Black & Decker Inc. Oscillating tool attachment feature
US9073195B2 (en) 2010-04-29 2015-07-07 Black & Decker Inc. Universal accessory for oscillating power tool
DE102010028976A1 (de) 2010-05-14 2011-11-17 Robert Bosch Gmbh Befestigungsflansch in einer Werkzeugmaschine
USD653523S1 (en) 2010-09-29 2012-02-07 Milwaukee Electric Tool Corporation Adapter for a tool
USD651062S1 (en) 2010-09-29 2011-12-27 Milwaukee Electric Tool Corporation Tool interface for an accessory
USD646542S1 (en) 2010-09-29 2011-10-11 Milwaukee Electric Tool Corporation Accessory interface for a tool
US9149923B2 (en) 2010-11-09 2015-10-06 Black & Decker Inc. Oscillating tools and accessories
USD651876S1 (en) 2010-12-14 2012-01-10 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD651877S1 (en) 2010-12-14 2012-01-10 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD651875S1 (en) 2010-12-14 2012-01-10 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD652274S1 (en) 2010-12-14 2012-01-17 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD651874S1 (en) 2010-12-14 2012-01-10 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD651878S1 (en) 2010-12-14 2012-01-10 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD694597S1 (en) 2012-06-25 2013-12-03 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD694599S1 (en) 2012-06-25 2013-12-03 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD694076S1 (en) 2012-06-25 2013-11-26 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD694598S1 (en) 2012-06-25 2013-12-03 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD694596S1 (en) 2012-06-25 2013-12-03 Techtronic Power Tools Technology Limited Universal interface for accessory blades
USD832666S1 (en) 2012-07-16 2018-11-06 Black & Decker Inc. Oscillating saw blade
US9555554B2 (en) 2013-05-06 2017-01-31 Milwaukee Electric Tool Corporation Oscillating multi-tool system
EP3012068B1 (fr) * 2014-10-24 2020-06-24 Guido Valentini Outil électrique guidé et/ou tenu à la main
US10265778B2 (en) 2017-01-16 2019-04-23 Black & Decker Inc. Accessories for oscillating power tools
USD814900S1 (en) 2017-01-16 2018-04-10 Black & Decker Inc. Blade for oscillating power tools

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303688A (en) * 1992-04-03 1994-04-19 Chiuminatta Edward R Mounting arbor for saw cutting blades
US5366312A (en) * 1993-08-18 1994-11-22 Surgiquip, Inc. Surgical saw blade attachment assembly
JPH1199460A (ja) * 1997-09-29 1999-04-13 Yanase Kk 回転研磨具
DE10061559A1 (de) * 2000-12-07 2002-06-13 C & E Fein Gmbh & Co Kg Aufnahme zur Befestigung eines Werkzeuges an einer Antriebswelle und Adapter hierzu
DE20115171U1 (de) * 2001-09-13 2001-11-22 Klann Tools Ltd., Oxfordshire Abziehvorrichtung für Wellensteckverbindungen
US6990713B2 (en) * 2003-01-27 2006-01-31 Lisle Corporation Steering column pivot pin removal tool
DE102004050798A1 (de) 2004-10-19 2006-04-20 Robert Bosch Gmbh Vorrichtung zum Befestigen eines Werkzeugs an einer oszillierend antreibbaren Antriebswelle einer Handwerkzeugmaschine
US7115028B1 (en) * 2005-04-25 2006-10-03 Sunmatch Industrial Co., Ltd. Coupling structure for grinding members
US7588484B2 (en) * 2006-01-19 2009-09-15 Nao Enterprises, Inc. Mounting system for grinding wheels and the like

Non-Patent Citations (1)

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See references of WO2008128813A1 *

Also Published As

Publication number Publication date
WO2008128813A1 (fr) 2008-10-30
CN101663131A (zh) 2010-03-03
DE102007018467A1 (de) 2008-10-23
US20090318065A1 (en) 2009-12-24
RU2009142435A (ru) 2011-06-27

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