EP0339027B1 - Spanneinrichtung zum lösbaren befestigen eines werkzeuges, insbesondere einer scheibe - Google Patents

Spanneinrichtung zum lösbaren befestigen eines werkzeuges, insbesondere einer scheibe Download PDF

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Publication number
EP0339027B1
EP0339027B1 EP19870907740 EP87907740A EP0339027B1 EP 0339027 B1 EP0339027 B1 EP 0339027B1 EP 19870907740 EP19870907740 EP 19870907740 EP 87907740 A EP87907740 A EP 87907740A EP 0339027 B1 EP0339027 B1 EP 0339027B1
Authority
EP
European Patent Office
Prior art keywords
flange
spindle
clamping device
tool
annular part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19870907740
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0339027A1 (de
Inventor
Erich Borst
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
Priority to AT87907740T priority Critical patent/ATE69572T1/de
Publication of EP0339027A1 publication Critical patent/EP0339027A1/de
Application granted granted Critical
Publication of EP0339027B1 publication Critical patent/EP0339027B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool

Definitions

  • the invention is based on a clamping device for releasably fastening a tool, in particular a disk, according to the generic preamble of the main claim.
  • Clamping devices for, in particular, disk-shaped tools are particularly suitable for portable hand-held machine tools and in particular for grinding machines.
  • a clamping device of the type mentioned is known (DE-PS 30 12 836), in which the one flange, which is arranged on the side of the tool facing the housing of the hand-held power tool, is axially movable relative to the spindle and is designed as a drive plate.
  • This rear support flange is coupled to the spindle in a torque-transmitting manner and is axially supported on a shoulder in one end position.
  • the other flange which can be screwed onto the end of the spindle, consists of a nut with a separate clamping element, approximately hat-shaped in cross section, which is supported axially against the flange of the clamping nut via a helical spring.
  • This clamping device is also intended to enable the grinding wheel to be replaced quickly and easily and at the same time to avoid overloading the hand-held power tool, in particular the angle grinder. If the torque applied to the grinding wheel becomes too large, the grinding wheel stops, while the rear flange and the clamping nut with clamping element execute a relative movement.
  • This clamping device counteracts the effect that the clamping nut continues to tighten itself during operation, which would otherwise make it considerably more difficult to loosen the clamping nut when changing the grinding wheel. Nevertheless, a loosening of the clamping nut is only possible with the help of a special auxiliary tool, and depending on the design of the machine, the spindle with a second auxiliary tool, eg. B. wrench, must be countered accordingly.
  • the tensioning device in the tensioning device according to the invention with the characterizing features of the main claim, the following advantages result.
  • a tool change is made possible without any auxiliary tool, which, moreover, can be carried out quickly and safely.
  • the tensioning device is from the one exposed during the intended use out front area and in the area between the tool and the bearing flange of the housing, so that any risk of damage, eg. B. met by abrasion on the workpiece.
  • the tensioning device is simple and robust in construction and is adequately protected against external contamination. Any wear on functionally important parts has been countered. Simple and easy two-hand operation is achieved.
  • the front clamping nut is unchanged in a known manner, so that standardized, inexpensive parts can be used here.
  • the support flange has a non-rotatable form fit with the spindle, so that relevant regulations are met.
  • the support flange is captively attached, which makes tool changing even easier.
  • a z. B. designed as an angle grinder, portable hand tool, which has a motor-driven and via a gear driven spindle 10 which is mounted in the housing 11 at one end by means of a needle bearing 12 and at an axial distance therefrom by means of a ball bearing 13.
  • the inner ring of the ball bearing 13 is axially supported on a shaft collar 14.
  • the spindle 10 is provided with a threaded shoulder 15, which carries an external thread 16.
  • the spindle 10 is used to drive a tool 17, the z. B. from the indicated grinding wheel or another tool disc, for. B. a cup wheel, brush, a rubber plate or the like.
  • the tool 17 is releasably attached to the spindle 10 by means of a clamping device.
  • the clamping device has two flanges 18 and 19, between which the tool 17 can be axially clamped.
  • One flange 19 is formed by a clamping nut 20 which has a hub part 21 and a continuous internal thread 22 with which the clamping nut 20 is screwed onto the external thread 16.
  • the tool 17 is centered on the outer peripheral surface of the hub part 21 during fastening.
  • the other flange 18 forms a counter flange. It is held axially displaceably on the spindle 10 and is coupled to the spindle 10 in a torque-transmitting manner.
  • a tongue and groove connection is used with a disc spring 23 which is positively received in the spindle 10 and which engages in an axially continuous groove 24 of the flange 18.
  • a support element which consists of an annular part 25, which is designed here as a nut 26, is arranged on the spindle 10 so as to be movable relative thereto.
  • the nut 26 is at least a small axial distance from the flange 18. It has an internal thread 27 with which it is movable on the thread of a threaded shoulder 28 of the spindle 10.
  • the external thread of the threaded shoulder 28 and the internal thread 27 of the nut 26 are each formed as a right-handed steep thread, the pitch angle of which is chosen so large that the steep thread lies in the safe range of self-locking.
  • An axial ball bearing 29 is arranged axially between the flange 18 and the nut 26, via which the flange 18 is axially supported on the nut 26.
  • a torsion spring 30 is placed between the flange 18 and the nut 26 and engages with one leg end 31 on the flange 18 and with its other leg end 32 on the nut 26.
  • the nut 26 is pressed against the axial ball bearing 29 by the torque of the torsion spring 30 via the steep thread of the threaded shoulder 28 of the spindle 10.
  • This axial screwing force is transmitted to the flange 18, the axial displacement of which in the direction facing away from the nut 26 is limited by means of a stop 33 in the form of a snap ring on the spindle 10.
  • Axial movement of the nut 26 relative to the spindle 10 and in the direction facing away from the flange 18 is limited by means of the shaft collar 14 of the spindle 10.
  • a cylindrical protective sleeve 34 is fastened to the flange 18 and extends axially over at least a region of both the flange 18 and the nut 26 and thereby covers the flange 18, the nut 26 and the axial intermediate region between the two in a protective manner.
  • the protective sleeve 34 provides the unmounted balls of the axial ball bearing 29 with radial support to the outside and at the same time seals the area between the nut 26 and the flange 18 to the outside.
  • the protective sleeve 34 overlaps the nut 26 axially with play so that it does not stand in the way of the relative movement of the nut 26 relative to the spindle 10 with flange 18.
  • two sealing rings 35, 36 are also arranged, of which one 35 is held on the nut 26 and the other 36 on part of the bearing flange 37 of the housing 11.
  • the two sealing rings 35, 36 together form a double labyrinth and protect the axial ball bearing 29 and the steep thread of the threaded shoulder 28 and the internal thread 27 of the nut 26 from dirt.
  • the nut 26 is associated with an externally accessible and actuatable locking device 38.
  • This has a pressure pin 40 which is loaded by a spring 39 and returned to the inactive disengaging position and which is held and guided in a guide 41 of the bearing flange 37 in a translationally translatable manner with respect to the spindle 10.
  • the pressure pin 40 carries at the inside end a locking member 42 which can block the nut 26 against rotation when the locking device 38 is actuated.
  • the locking member 42 consists here of an approximately strip-like finger 43 bent at the lower end. This is secured and guided in a guide 44 against tilting or rotating about the axis of the pressure bolt 40.
  • the guide 44 is z. B. formed by two adjacent ribs 45, 46 of the housing 11. Recesses 47, 48 adjacent to the ribs 45, 46 ensure that the translational movement of the finger 43, triggered by displacement of the pressure pin 40, is not blocked by dirt or the like.
  • the nut 26 has at least one, expediently a plurality of latching openings 49, 50 which are arranged at equal circumferential angular distances from one another and which are open towards the outside and towards the finger 43 and are adapted to the dimensions of the finger 43 such that the finger 43 enters the latching openings 49 , 50 fits into it when the pressure pin 40 is pressed in by hand in the direction of arrow 51.
  • the pressure bolt 40 is pressed with one hand in the direction of arrow 51 from the outside up to the stop when the engine is switched off and is gripped with the other hand on the tool 17 and this together with the clamping device including the flange 18 Spindle 10 and the nut 26 rotated until the finger 43 in one latching opening 49 or 50 engaging its area, whereupon the nut 26 is prevented from rotating during this rotation.
  • the pressure pin 40 is then held by hand in this locked position.
  • the other hand exerts a torque counterclockwise on the tool 17. This torque is transmitted from the tool 17 via the flanges 18, 19 to the spindle 10 and its threaded shoulder 28 with a steep thread.
  • the nut 26 is released from its axial contact with the axial ball bearing 29 and, upon further rotation, moves axially in a direction away from the flange 18 towards the stop on the shaft collar 14.
  • the axial ball bearing 29 and with it the flange 18 can move freely axially, so that the clamping pressure effective between the two flanges 18 and 19 and the tool 17 drops and the clamping nut 20 is relaxed. This can now be completely unscrewed from the threaded shoulder 15 by hand and the tool 17 can then be replaced.
  • the loosening torque on the circumference of the tool 17 depends on the helix angle of the high helix thread on the threaded shoulder 28 and the nut 26. The larger this helix angle, the smaller the loosening torque.
  • the pitch angle is determined so that the steep thread of the threaded shoulder 28 and the internal thread 27 of the nut 26 is in the safe range of self-locking, taking into account the torque of the torsion spring 30, which counteracts the loosening torque.
  • the locking device 38 is again actuated by hand in the manner described above, so that the finger 43 engages in a latching opening 49, 50 of the nut 26.
  • the clamping nut 20 is slightly tightened and the new tool 17 is also slightly tightened. This is sufficient because when the engine is subsequently switched on, the tool 17 then automatically tightens during operation.
  • the arranged between the nut 26 and the flange 18 axial ball bearing 29 has the advantage that the existing front friction between the two is reduced to a rolling friction and is therefore practically negligible.
  • the clamping device described has many advantages. It lies in the protected area between the tool 17 and the bearing flange 37 running above it, which completely eliminates the risk of any damage or impairment when the handheld power tool is used as intended. Reliable protection against dirt, dust and other contaminants is achieved with simple means.
  • the tensioning device is simple and robust in construction. Any wear and tear on functionally important parts is reduced to a minimum or even completely eliminated.
  • the clamping device is extremely simple, inexpensive and fast, safe and easy to use. It enables a quick and safe change of the tool 17 without the need for any additional special tools. Simple and easy two-hand operation is achieved. The other.
  • the clamping device is not limited to grinding wheels as a tool 17. Rather, other tools, e.g. B. pot washers, brushes, rubber plates or the like.
  • Locking devices for the spindle of angle grinders are known per se. However, in known hand-held power tools, these are located in the gearbox.
  • the design according to the invention differs from the fact that the locking device 38 is instead arranged in the region of the bearing flange 37 and the ball bearing 13.
  • This relocation of the spindle locking device has the advantage that there are no sealing problems, furthermore there is no need for locking openings on the ring gear for the form-locking spindle locking, as a result of which the ring gear becomes much cheaper, and the design of the housing 11 becomes simpler and cheaper.
  • the stress on the individual parts of the spindle lock is significantly reduced. When released, the stress is, for example, only about 6% of that of the otherwise known spindle locking devices.
  • the advantage of the lateral arrangement of the pressure bolt 40 which is accessible from the air, is also retained. Before each clamping of the tool 17, the nut 26 is inevitably returned to the starting position via the locking device 38.
  • the second exemplary embodiment differs from the first exemplary embodiment in that the ring part 125, which serves as a support element for the flange 118, consists of a disk 152 which is displaceable and rotatable relative to the spindle 110.
  • the spindle 110 is provided with a continuous cylindrical outer peripheral surface in this area.
  • the axial ball bearing arranged axially between the ring part 25 and the nut 26 in the first embodiment is omitted in the second embodiment.
  • a schematically indicated axial ball bearing 153 is arranged on the axial side of the disk 152, which faces away from the flange 118, on which the disk 152 is supported with the facing axial side.
  • the axial ball bearing 153 is in turn supported on the shaft collar 114 of the spindle 110.
  • the cylindrical protective sleeve 134 is firmly attached to the disk 152 here. It covers an axial part of the flange 118, and this with play. As in the first exemplary embodiment, the disk 152 and the flange 118 are coupled by means of the torsion spring 130.
  • the inclined surfaces 152a, 118a are axial wedge surfaces with which the flange 118 and the disk 152 lie axially against one another, as is evident from the development according to FIG. 4.
  • the wedge angle ⁇ of these inclined surfaces 152a, 118a is chosen so large that it lies in the safe range of self-locking.
  • the torsion spring 130 which is supported, as in the first exemplary embodiment, with one leg end 132 on the disk 152 and with its other leg end 131 on the flange 118, rotates the disk 152 and the flange 118 relative to one another in such a way that both parts on the inclined surfaces 118a, 152a slide up and thereby be pushed apart axially.
  • This axial spreading movement is limited in one direction by the shaft collar 114 and in the other direction by the stop 133 in the form of the snap ring of the spindle 110.
  • the disk 152 is first rotationally blocked as described in the first exemplary embodiment by means of the locking device 138, which is designed in the same way as in the first exemplary embodiment. If the tool 117 is then rotated counterclockwise with the other hand, the flange 118 and the spindle 110 are also taken along. Rotation of the flange 118 counterclockwise causes the tapered surfaces 118a of the flange 118 to slide wedge down the tapered surfaces 152a of the rotationally locked washer 152, which results in a corresponding axial relaxation, whereupon the clamping nut 120 becomes loose and can be easily unscrewed by hand.
  • the torsion spring 130 is able to clamp the flange 118 relative to the disk 152 to rotate so that the inclined surfaces 118a of the flange 118 slide upward on the inclined surfaces 152a of the disc 152, whereby the two parts 152, 118 are axially pressed apart again.
  • the tool 117 is clamped in the pressed-apart position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Gripping On Spindles (AREA)
EP19870907740 1986-12-24 1987-12-05 Spanneinrichtung zum lösbaren befestigen eines werkzeuges, insbesondere einer scheibe Expired - Lifetime EP0339027B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87907740T ATE69572T1 (de) 1986-12-24 1987-12-05 Spanneinrichtung zum loesbaren befestigen eines werkzeuges, insbesondere einer scheibe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863644441 DE3644441A1 (de) 1986-12-24 1986-12-24 Spanneinrichtung zum loesbaren befestigen eines werkzeuges, insbesondere einer scheibe
DE3644441 1986-12-24

Publications (2)

Publication Number Publication Date
EP0339027A1 EP0339027A1 (de) 1989-11-02
EP0339027B1 true EP0339027B1 (de) 1991-11-21

Family

ID=6317198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870907740 Expired - Lifetime EP0339027B1 (de) 1986-12-24 1987-12-05 Spanneinrichtung zum lösbaren befestigen eines werkzeuges, insbesondere einer scheibe

Country Status (8)

Country Link
US (1) US5022188A (es)
EP (1) EP0339027B1 (es)
JP (1) JPH02501722A (es)
AT (1) ATE69572T1 (es)
BR (1) BR8707927A (es)
DE (2) DE3644441A1 (es)
ES (1) ES2006016A6 (es)
WO (1) WO1988004976A1 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722444B2 (en) 2005-05-13 2010-05-25 Black & Decker Inc. Angle grinder
US10818450B2 (en) 2017-06-14 2020-10-27 Black & Decker Inc. Paddle switch

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826610A1 (de) * 1988-08-05 1990-02-08 Licentia Gmbh Einrichtung zum loesbaren befestigen eines scheibenfoermigen werkzeugs auf der arbeitsspindel eines elektrowerkzeugs
DE3832624A1 (de) * 1988-09-26 1990-04-05 Licentia Gmbh Schnellspanneinrichtung fuer auf der arbeitswelle eines elektrowerkzeugs angebrachte scheibenfoermige werkzeuge
DE3903766A1 (de) * 1989-02-09 1990-08-16 Licentia Gmbh Schnellspanneinrichtung fuer scheibenfoermige bearbeitungswerkzeuge von elektrowerkzeugen
DE4238466C1 (de) * 1992-11-16 1994-01-20 Metabowerke Kg Schnellspanneinrichtung zum axialen Festspannen eines scheibenförmigen Werkzeugs
DE4243328C1 (de) * 1992-12-22 1994-06-09 Metabowerke Kg Schnellspanneinrichtung zum axialen Festspannen eines scheibenförmigen Werkzeugs
DE4305317C2 (de) * 1993-02-20 1995-10-12 Metabowerke Kg Schnellspanneinrichtung zum axialen Festspannen eines scheibenförmigen Werkzeugs
US5577872A (en) * 1993-03-15 1996-11-26 Power Tool Holders Incorporated Torque enhancing tightening screw
US5567100A (en) * 1993-03-15 1996-10-22 Power Tool Holders Incorporated Torque enhancing clamping nut
JPH0727121A (ja) * 1993-06-30 1995-01-27 Jacobs Japan Inc 締付け用ネジ
DE4336620C2 (de) * 1993-10-27 1997-07-03 Fein C & E Elektrowerkzeug mit einer nur bei ausgeschaltetem Motor betätigbaren Spannvorrichtung
DE4337023B4 (de) * 1993-10-29 2007-08-09 Robert Bosch Gmbh Motorgetriebene Handwerkzeugmaschine
DE4344128B4 (de) * 1993-12-23 2008-09-11 Robert Bosch Gmbh Elektrische Handwerkzeugmaschine mit einer Spindelarretierung
US5871322A (en) * 1994-12-22 1999-02-16 Power Tool Holders Incorporated Clamp screw
DE19509147C1 (de) * 1995-03-14 1996-05-23 Atlas Copco Elektrowerkzeuge Spanneinrichtung zum Festlegen eines scheibenförmigen Werkzeugs
WO1998024589A1 (de) * 1996-12-05 1998-06-11 Robert Bosch Gmbh Handwerkzeugmaschine
DE19650364A1 (de) * 1996-12-05 1998-06-10 Bosch Gmbh Robert Handwerkzeugmaschine
US6050741A (en) * 1998-01-30 2000-04-18 Power Tool Holders Incorporated Tool clamping device
US6179512B1 (en) 1998-05-29 2001-01-30 Power Tool Holders Incorporated Collet nut
DE59801010D1 (de) * 1998-08-28 2001-08-16 Ceka Elektrowerkzeuge Ag & Co Automatische Spindelarretierung
DE19930919C2 (de) * 1999-07-06 2002-04-25 Stefan Fenchel Vorrichtung zum leichteren Lösen einer Schraubverbindung
DE19960970B4 (de) * 1999-12-17 2007-07-12 Robert Bosch Gmbh Tragbare Handwerkzeugmaschine
NL1014558C2 (nl) * 2000-03-03 2001-09-13 Skil Europ Bv Boormachine met grendelmechanisme.
US6857943B2 (en) * 2000-06-28 2005-02-22 Michael Kapgan Burr removal apparatus
US6846226B2 (en) * 2000-06-28 2005-01-25 Michael Kapgan Burr removal apparatus
US7013987B2 (en) * 2000-09-08 2006-03-21 Black & Decker Clutch assembly and clamp mechanism for rotary tool disc
US6645058B2 (en) 2000-11-30 2003-11-11 Black & Decker Inc. Clamp mechanism for rotary tool disc
DE10059976A1 (de) * 2000-12-02 2002-06-06 Bosch Gmbh Robert Handwerkzeugmaschine
DE10064163C2 (de) * 2000-12-22 2003-04-17 Wernicke & Co Gmbh Anordnung zum lösbaren Befestigen einer Schleifscheibe oder eines Schleifscheibenpakets an einer Schleifspindel
TW496238U (en) * 2000-12-26 2002-07-21 Mobiletron Electronics Co Ltd Safety structure for replacing of grinding wheel for grinder
ATE327863T1 (de) * 2002-01-10 2006-06-15 Black & Decker Inc Getriebegehäuse
DE10308743B3 (de) * 2003-02-28 2004-11-11 Hilti Ag Schnellspannmutter für scheibenförmige Werkzeuge
DE10330122B4 (de) * 2003-07-04 2005-09-01 Festool Gmbh Handwerkzeugmaschine mit Blockierteil
DE102004020982A1 (de) * 2004-04-23 2005-11-17 C. & E. Fein Gmbh Kraftgetriebenes Handwerkzeug mit Spanneinrichtung für ein Werkzeug
US7424768B2 (en) * 2005-09-16 2008-09-16 Credo Technology Corporation Handle for power tool
US7261166B2 (en) * 2005-09-16 2007-08-28 Robert Bosch Gmbh Switch for power tool
US7547167B2 (en) 2005-09-16 2009-06-16 Robert Bosch Gmbh Storage drawer for hand-held power tool
DE102006001986A1 (de) * 2006-01-16 2007-07-19 Robert Bosch Gmbh Spannvorrichtung zum lösbaren Befestigen eines scheibenförmigen Werkzeugs
US8047242B2 (en) * 2007-12-07 2011-11-01 Black & Decker Inc. Power tool with spindle lock
EP2403685B1 (en) * 2008-01-07 2015-05-06 Lachlan George Reid Attachment mechanism for a cutting disc
US20090280733A1 (en) * 2008-05-08 2009-11-12 Mao Shan Machinery Industrial Co., Ltd Assembly/disassembly structure of upstanding grinding axle
US20110039482A1 (en) * 2009-07-29 2011-02-17 Terry Timmons Grinder
US8925931B2 (en) 2010-04-29 2015-01-06 Black & Decker Inc. Oscillating tool
US9073195B2 (en) 2010-04-29 2015-07-07 Black & Decker Inc. Universal accessory for oscillating power tool
US9186770B2 (en) 2010-04-29 2015-11-17 Black & Decker Inc. Oscillating tool attachment feature
US9149923B2 (en) 2010-11-09 2015-10-06 Black & Decker Inc. Oscillating tools and accessories
DE102011003098A1 (de) * 2011-01-25 2012-07-26 Robert Bosch Gmbh Werkzeugspannvorrichtung
USD832666S1 (en) 2012-07-16 2018-11-06 Black & Decker Inc. Oscillating saw blade
DE102015224006A1 (de) * 2015-12-02 2017-06-08 Robert Bosch Gmbh Handwerkzeugmaschine mit mindestens einem maschinenseitigem Kontaktelement
EP3300835B1 (en) 2016-09-29 2021-05-12 Black & Decker Inc. Accessory clamp and spindle lock mechanism for power tool lock
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
CN207189852U (zh) 2017-06-05 2018-04-06 米沃奇电动工具公司 台锯
CN109333353A (zh) * 2018-11-22 2019-02-15 沈阳航天新光集团有限公司 六轴气浮磨床快换夹具

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1539057A (en) * 1920-05-06 1925-05-26 Thomas C Rowen Tool holder
US2267781A (en) * 1939-11-09 1941-12-30 Albertson & Co Inc Electric sanding machine
FR1260181A (fr) * 1960-03-25 1961-05-05 S I O M E T Soc Ind D Outil Et Perfectionnements apportés aux porte-outil pour machines-outils et notamment aux porte-fraise
GB1068656A (en) * 1965-04-22 1967-05-10 Sheffield Twist Drill & Steel Improvements in chucks for milling machine cutters
CH449931A (de) * 1966-12-06 1968-01-15 Perles Elektrowerkzeuge & Moto Spannvorrichtung für das Blatt einer Handkreissäge
DE3120899C2 (de) * 1981-05-26 1983-10-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arretiervorrichtung für die Antriebsspindel von Winkelschleifern
US4637170A (en) * 1985-01-17 1987-01-20 Aleck Block Abrasive apparatus
DE3607377A1 (de) * 1986-03-06 1987-09-10 Metabowerke Kg Elektromotorisch angetriebener schleifer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722444B2 (en) 2005-05-13 2010-05-25 Black & Decker Inc. Angle grinder
US8087977B2 (en) 2005-05-13 2012-01-03 Black & Decker Inc. Angle grinder
US8087976B2 (en) 2005-05-13 2012-01-03 Black & Decker Inc. Trigger assembly for angle grinder
US10818450B2 (en) 2017-06-14 2020-10-27 Black & Decker Inc. Paddle switch

Also Published As

Publication number Publication date
JPH02501722A (ja) 1990-06-14
DE3774716D1 (de) 1992-01-02
ATE69572T1 (de) 1991-12-15
EP0339027A1 (de) 1989-11-02
BR8707927A (pt) 1989-10-31
ES2006016A6 (es) 1989-04-01
WO1988004976A1 (en) 1988-07-14
DE3644441A1 (de) 1988-07-07
US5022188A (en) 1991-06-11

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