EP0381809A2 - Dispositif pour le serrage rapide de disques d'usinage pour outils électriques - Google Patents

Dispositif pour le serrage rapide de disques d'usinage pour outils électriques Download PDF

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Publication number
EP0381809A2
EP0381809A2 EP89113940A EP89113940A EP0381809A2 EP 0381809 A2 EP0381809 A2 EP 0381809A2 EP 89113940 A EP89113940 A EP 89113940A EP 89113940 A EP89113940 A EP 89113940A EP 0381809 A2 EP0381809 A2 EP 0381809A2
Authority
EP
European Patent Office
Prior art keywords
clamping
flange
adjusting ring
nut
quick
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.)
Ceased
Application number
EP89113940A
Other languages
German (de)
English (en)
Other versions
EP0381809A3 (fr
Inventor
Musa Göcmez
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0381809A2 publication Critical patent/EP0381809A2/fr
Publication of EP0381809A3 publication Critical patent/EP0381809A3/fr
Ceased 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

Definitions

  • the invention relates to a quick release device according to the preamble of claim 1.
  • EP 02 31 500 A2 discloses a device for the releasable fastening of a disk-shaped tool, in which the clamping flange resting on the tool can be relieved of the clamping pressure for the tool by the fact that support means designed as rolling bodies and introduced into a space between the work spindle and the clamping flange transversely are arbitrarily movable to a support direction in an escape space.
  • Support means designed as rolling bodies and movable into an alternative space lead axially to a relatively large overall height of the part of the device which projects beyond the plane of the machining tool.
  • the invention has for its object to provide a quick release device of the generic type with a comparatively low axial height in order to achieve the smallest possible angle between the plane of the disk-shaped machining tools and the imaginary connecting line from the periphery of the machining tools to the lower edge of the quick clamping device.
  • the smallest possible angle is e.g. important for angle grinders.
  • the quick-action clamping device essentially consists of a clamping nut 10, an adjusting ring 11, a clamping flange 12, two locking elements 13, four return and centering springs 14, two balls 15 for absorbing radial forces and three O-rings 16 , 17 and 18.
  • the number of locking elements 13 and springs 14 depends on the particular case.
  • Both the clamping nut 10 and the clamping flange 12 are provided with a number of jumps 19, 20, of which a suitable number is arranged distributed over the circumference.
  • the jumps or wedge-like elevations 19, 20 lie on the mutually assigned surfaces of the clamping nut 10 and the clamping flange 12 and correspond to one another (see also FIG. 3).
  • the adjusting ring 11 On the inner circumference of the adjusting ring 11 there are radially inwardly extending barriers 21, on each of which one end of a spring 14 of a pair of springs is supported. The other end of the spring comes to bear on a ball 15. The end of the second spring 14 engages on the surface of this ball 15 opposite this contact side, the other end of which is supported on the stop surface 23 obtained by a recess 22 in the clamping nut 10.
  • the adjusting ring 11 Offset in relation to each barrier 21 in the circumferential direction, the adjusting ring 11 has a nose-shaped or similarly shaped projection 24, which cooperates with a locking element 13, which has a pin 26 rotatably mounted in a bore 25 in the clamping nut 10 and in this area to a matching recess in the clamping nut adjoins.
  • the two locking elements 13 provided in the exemplary embodiment lie opposite one another and are designed as small cam disks which each act in their area facing away from the pin 26 on the clamping flange 12 provided with
  • the two locking elements 13 are in the position as is illustrated in the right half of FIG. 3 for the one locking element, they prevent a relative movement between the clamping flange 12 and the clamping nut 10 and thus also between the jumps 19 and 20.
  • the Loading of the clamping flange 12 with the clamping pressure for the tool 28 is thus ensured and is maintained by the action of the spring 14.
  • This clamping position is illustrated in the right half of FIG. 2 by the clamping flange 12 lying directly against the tool 28.
  • the clamping flange 12 can now perform a relative movement to the clamping nut 10, and due to the effective axial preload, the jumps 20 of the clamping flange 12 slide down on the jumps 19 of the clamping nut, so that the clamping flange 12 moves from the clamping plane of the tool 28 against the clamping nut 10 moved down. Clamping flange 12 and clamping nut 10 are thus fully relieved of the clamping pressure for the tool, so that the latter can easily be released by hand from the threaded pin 29 of the output spindle 30 of the angle grinder.
  • the counter flange is designated 31.
  • the space between the surface of the clamping flange 12 and the opposite surface of the tool 28, which is created during the loosening process, is designated LS in the left half of FIG.
  • the right-hand half of FIG. 2 shows the clamping state.
  • the plane of the clamping flange 12 facing away from the tool 28 and the plane of the clamping nut 10 opposite this plane have a distance VS caused by the relative position of the jumps 19 and 20.
  • the locking elements 13 ' are approximately club-shaped.
  • the end face 32 of the locking elements 13 ' is each supported on a flank 33 of the clamping nut 10.
  • the clearance angle designated ⁇ in FIG. 7 between the two surfaces 32, 33 of the clamping nut 10 and the locking element 13 'coming into contact with one another is chosen in such a way that favorable friction conditions result, for example: ⁇ min ⁇ Ag ⁇ . If necessary, the use of ceramic materials with a low friction factor can reduce the friction.
  • the clearance angle ⁇ can be, for example, in the order of magnitude between 12 ° and 16 °, for locking elements made of ceramic, for example, 8 ° -12 °.
  • the locking elements 13 'can - but need not - be rotatably centered here by means of pins 25 in bores of the clamping flange 12 and the formation of the jumps 19 on the clamping nut 10 and the jumps 20 on the opposite surface of the clamping flange 12 corresponds to that after the first Embodiment explained The same applies to the arrangement and number of ski jumps 19 and 20, with various possibilities in this regard.
  • a total of two return springs 14 ' are provided.
  • one of the two return springs 14 ' is tensioned in the unloaded state of the clamping flange 12 (see right side of FIG. 5) and the locking element 13' comes as a result of the forces acting after the manual rotation of the adjusting ring 11 into the release position while being overcome the friction up to the stop on the inner surface of the collar 11 to the outside.
  • the exemplary embodiment according to FIGS. 4 to 7 has the advantage that standard counter flanges 31 can be used. It has proven to be expedient to provide the clamping nut 10 and the clamping flange 12 with three jumps (wedges) 19 and 20, respectively, which are offset by 120 ° to one another. Basically the number of jumps (wedges) depends on the respective requirements.
  • the number of ski jumps 19 and 20 is six in each of the two exemplary embodiments (FIGS. 1 to 6).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Clamps And Clips (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP19890113940 1989-02-09 1989-07-28 Dispositif pour le serrage rapide de disques d'usinage pour outils électriques Ceased EP0381809A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893903766 DE3903766A1 (de) 1989-02-09 1989-02-09 Schnellspanneinrichtung fuer scheibenfoermige bearbeitungswerkzeuge von elektrowerkzeugen
DE3903766 1989-02-09

Publications (2)

Publication Number Publication Date
EP0381809A2 true EP0381809A2 (fr) 1990-08-16
EP0381809A3 EP0381809A3 (fr) 1990-10-17

Family

ID=6373672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890113940 Ceased EP0381809A3 (fr) 1989-02-09 1989-07-28 Dispositif pour le serrage rapide de disques d'usinage pour outils électriques

Country Status (2)

Country Link
EP (1) EP0381809A3 (fr)
DE (1) DE3903766A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0558277A1 (fr) * 1992-02-28 1993-09-01 Black & Decker Inc. Amélioration de ou en rapport avec le bloquage de flasques
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
DE4305317A1 (de) * 1993-02-20 1994-09-01 Metabowerke Kg Spannmutter
WO1994025221A1 (fr) * 1993-04-29 1994-11-10 Filip Kozelj Dispositif de serrage permettant le montage axial rapide d'outils et plus particulierement d'outils en forme de disque
EP0631844A1 (fr) * 1993-07-01 1995-01-04 Black & Decker Inc. Verrouillage de flasques
US5545078A (en) * 1992-11-16 1996-08-13 Metabowerke Gmbh & Co. Quick-action clamping device for axially securing a disk shaped tool
WO1997021519A1 (fr) * 1995-12-11 1997-06-19 INA Wälzlager Schaeffler oHG Accouplement a serrage rapide a pieces de serrage agissant radialement
US5871322A (en) * 1994-12-22 1999-02-16 Power Tool Holders Incorporated Clamp screw
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
EP1281478A2 (fr) * 2001-08-03 2003-02-05 Neudecker & Jolitz GmbH & Co. Ecrou à serrage rapide
EP2103383A3 (fr) * 2008-03-20 2013-01-16 Metabowerke GmbH Machine-outil
CN104044062A (zh) * 2013-03-15 2014-09-17 昆山齐升磨料磨具有限公司 一种新型的磨具

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029744A1 (de) * 1990-09-20 1992-03-26 Metabowerke Kg Spannvorrichtung fuer scheibenfoermige werkzeuge
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
DE19511184A1 (de) * 1995-03-27 1996-10-02 Schaeffler Waelzlager Kg Einrichtung zum lösbaren Befestigen eines scheibenförmigen Werkzeugs auf einer Spindel
US7343841B2 (en) 2002-02-15 2008-03-18 Black & Decker Inc. Blade clamp assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637170A (en) * 1985-01-17 1987-01-20 Aleck Block Abrasive apparatus
WO1988004976A1 (fr) * 1986-12-24 1988-07-14 Robert Bosch Gmbh Dispositif de serrage pour la fixation amovible d'un outil, notamment d'un disque abrasif
WO1988004975A1 (fr) * 1986-12-24 1988-07-14 Robert Bosch Gmbh Dispositif de serrage pour la fixation amovible d'un outil, notamment d'un disque abrasif
WO1988006075A1 (fr) * 1987-02-21 1988-08-25 Robert Bosch Gmbh Dispositif de serrage axial d'outils, en particulier de meules
EP0231500B1 (fr) * 1986-02-05 1994-04-13 Robert Bosch Gmbh Dispositif de fixation démontable d'un outil en forme de disque

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516542A1 (de) * 1985-05-08 1986-11-13 Robert Bosch Gmbh, 7000 Stuttgart Werkzeughalter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637170A (en) * 1985-01-17 1987-01-20 Aleck Block Abrasive apparatus
EP0231500B1 (fr) * 1986-02-05 1994-04-13 Robert Bosch Gmbh Dispositif de fixation démontable d'un outil en forme de disque
WO1988004976A1 (fr) * 1986-12-24 1988-07-14 Robert Bosch Gmbh Dispositif de serrage pour la fixation amovible d'un outil, notamment d'un disque abrasif
WO1988004975A1 (fr) * 1986-12-24 1988-07-14 Robert Bosch Gmbh Dispositif de serrage pour la fixation amovible d'un outil, notamment d'un disque abrasif
WO1988006075A1 (fr) * 1987-02-21 1988-08-25 Robert Bosch Gmbh Dispositif de serrage axial d'outils, en particulier de meules

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388942A (en) * 1992-02-28 1995-02-14 Black & Decker Inc. Flange locks
EP0558277A1 (fr) * 1992-02-28 1993-09-01 Black & Decker Inc. Amélioration de ou en rapport avec le bloquage de flasques
DE4238466C1 (de) * 1992-11-16 1994-01-20 Metabowerke Kg Schnellspanneinrichtung zum axialen Festspannen eines scheibenförmigen Werkzeugs
US5545078A (en) * 1992-11-16 1996-08-13 Metabowerke Gmbh & Co. Quick-action clamping device for axially securing a disk shaped tool
DE4243328C1 (de) * 1992-12-22 1994-06-09 Metabowerke Kg Schnellspanneinrichtung zum axialen Festspannen eines scheibenförmigen Werkzeugs
DE4305317A1 (de) * 1993-02-20 1994-09-01 Metabowerke Kg Spannmutter
WO1994025221A1 (fr) * 1993-04-29 1994-11-10 Filip Kozelj Dispositif de serrage permettant le montage axial rapide d'outils et plus particulierement d'outils en forme de disque
US5518440A (en) * 1993-07-01 1996-05-21 Black & Decker Inc. Power tool flange lock
EP0631844A1 (fr) * 1993-07-01 1995-01-04 Black & Decker Inc. Verrouillage de flasques
US5871322A (en) * 1994-12-22 1999-02-16 Power Tool Holders Incorporated Clamp screw
WO1997021519A1 (fr) * 1995-12-11 1997-06-19 INA Wälzlager Schaeffler oHG Accouplement a serrage rapide a pieces de serrage agissant radialement
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
EP1281478A2 (fr) * 2001-08-03 2003-02-05 Neudecker & Jolitz GmbH & Co. Ecrou à serrage rapide
EP1281478A3 (fr) * 2001-08-03 2004-03-17 Neudecker & Jolitz GmbH & Co. Ecrou à serrage rapide
EP2103383A3 (fr) * 2008-03-20 2013-01-16 Metabowerke GmbH Machine-outil
CN104044062A (zh) * 2013-03-15 2014-09-17 昆山齐升磨料磨具有限公司 一种新型的磨具

Also Published As

Publication number Publication date
EP0381809A3 (fr) 1990-10-17
DE3903766A1 (de) 1990-08-16

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