EP1697086B1 - Einsatzwerkzeug für einen winkelschleifer - Google Patents

Einsatzwerkzeug für einen winkelschleifer Download PDF

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Publication number
EP1697086B1
EP1697086B1 EP04820605A EP04820605A EP1697086B1 EP 1697086 B1 EP1697086 B1 EP 1697086B1 EP 04820605 A EP04820605 A EP 04820605A EP 04820605 A EP04820605 A EP 04820605A EP 1697086 B1 EP1697086 B1 EP 1697086B1
Authority
EP
European Patent Office
Prior art keywords
fastening means
hub
fastening
driving device
application tool
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
Application number
EP04820605A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1697086A1 (de
Inventor
Ernst Kraenzler
Peter Stierle
Albrecht Hofmann
Juergen Wiker
Harald Krondorfer
Markus Heckmann
Joachim Schadow
Sinisa Andrasic
Thomas Schomisch
Christof Hoelzl
Johann Huber
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 EP1697086A1 publication Critical patent/EP1697086A1/de
Application granted granted Critical
Publication of EP1697086B1 publication Critical patent/EP1697086B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings

Definitions

  • the invention relates to an insert tool for an angle grinder according to the preamble of claim 1.
  • the invention is based on a system comprising an insert tool with a hub and a driving device for an angle grinder according to the preamble of claim 9.
  • a generic forming tool for an angle grinder having a hub with a plurality of fasteners formed by recesses.
  • the insert tool can advantageously be clamped by means of a quick-release system on a driving device of the angle grinder, which is also known from the above-mentioned document.
  • the invention is based on an insert tool for an angle grinder which has a hub with at least one fastening means for securing the hub to a driving flange of the angle grinder and having a second fastening means.
  • the invention is also based on a system consisting of an insert tool with a hub and an entrainment device for an angle grinder, wherein the hub has at least a first attachment means and the entrainment device at least a first attachment member for cooperation with the first attachment means and for securing the hub to the driving device wherein the hub has a second attachment means.
  • the first fastening means is arranged on a pitch circle with a radius between 12 mm and 25 mm
  • the second fastening means has a retaining area formed by a first elongated hole with a width of 3.5 mm to 4.5 mm and a release area with has a width of 6.5 mm to 7.5 mm
  • the second fastening means is formed from the oblong holes, each adjacent to each other along one of its long sides.
  • the proposed dimension of the pitch circle and in particular by the other, proposed in the dependent claims dimensions, configurations and positioning an insert tool can be achieved, especially with a quick-release system safely and easily mounted on an angle grinder and also allows a handy use with sufficient working material , It can be achieved advantageously in itself and with the driving flange tuned insert tool, and it can be achieved during a labor input with the insert tool advantageous force distributions in the insert tool and driving flange.
  • the hub may be made of the material of the grinding wheel or of another material, such as a steel sheet.
  • FIG. 1 shows an angle grinder 2 from above with a mounted in a housing 4, not shown electric motor.
  • the angle grinder 2 can be guided by means of two handles 6, 8.
  • a not shown gear in a gear housing 10 and also not visible drive shaft an insert tool 12 in the direction of rotation 14 can be driven.
  • FIG. 1 a hub 16 of the insert tool 12 is visible.
  • This hub is in FIG. 2 shown in a perspective view.
  • Around the hub 16 is an in FIG. 1 visible abrasive body 18 of the insert tool 12 which is fastened by means of fastening means 20 to the hub 16.
  • the fastening means 20 are arranged in a radially outer region of the hub 16 on a second pitch circle which extends completely in the region of hub material. Thus, no recesses are arranged between the fastening means 20, as a result of which a stable outer region of the hub 16 can be achieved.
  • the hub 16 of the trained as a roughing insert tool 12 is provided for mounting on a driving device 22 of the angle grinder 2, which in FIG. 3 is shown.
  • This driving device 22 comprises a centering collar 24, on which the hub 16 can be plugged with a centering opening 26.
  • the hub 16 is located with its radially innermost part on three Kodiererhebonne 28, which extend from the centering collar 24 radially outward.
  • On this Kodiererhebitch 28 resting the hub 16 can be rotated in the tangential direction 30 until three radial recesses 32 cover the three Kodiererhebitch 28. In this position, the hub 16 falls - and with it the entire insert tool 12 - slightly lower until it comes to lie with its inner plate 34 on three locking pins 36.
  • These three locking pins 36 are spring-loaded and can be pressed by an operator of the angle grinder 2 by pressing the insert tool 12 down. Now, the hub 16 can be pressed with its lower plate 34 to a bottom 38 of the driving device 22, whereby executed as a hook fastening elements 40 pass through openings 42 in the lower plate 34 of the hub 16.
  • the hub 16 can now be rotated clockwise, whereby a radially innermost portion 44 of the lower plate 34 can be passed under the Kodiererhebept 28.
  • a through-openings 42 respectively adjacent holding portion 46 of the lower plate 34 is pushed under an obliquely oriented ramp member 48 of the fastener 40, wherein the fastener 40 is pulled against the force of a biased spring, not shown, something up.
  • a detailed description of the driving device 22, the spring-loaded locking pin 36 and the fasteners 40 can be found in the above-mentioned WO 03/097299 ,
  • FIG. 4 shows the hub 16 of the insert tool 12 in a plan view.
  • the hub 16 comprises three identical, designed as a cup-shaped depressions 52 first fastening means which protrude in the plan view of the drawing plane.
  • the pot-like recesses 52 have a circular cross section, the center of which lies on a pitch circle 54 which has a radius 56 of 16.7 mm.
  • the pot-shaped depressions 52 have a circular cross section with an inner diameter 58 of 6 mm (FIG. FIG. 5 ) and an internal depth 60 of 3.85 mm.
  • the hub 16 also includes three identically designed apertures 42 as second attachment means. These second fastening means are formed in the form of two oblong holes, which are tangential 30 and parallel to each other are aligned. The oblong holes are substantially rectangular and each adjacent to one another at one of their long sides partially.
  • the openings 42 comprise a first, formed by the radially inner slot holding portion 62 which has a radial width 64 of 3.9 mm.
  • the opening 42 In a release region 66 formed by both oblong holes, the opening 42 has a radial width 68 of 7.1 mm.
  • the radial width 72 of the opening 42 is 3.4 mm.
  • the three apertures 42 each extend over an angular range 74 of approximately 60 °.
  • the openings 42 furthermore have blocking elements 76 designed as bulges, which delimit the radially inner slot and project into the release area 66.
  • the blocking elements 76 in turn have a stop 78, which is provided to limit a release movement of the fastening element 40 in the opening 42.
  • openings 42 are formed by two rectangular slots, a particularly stable mounting of the hub 16 on the driving device 22 in the axial direction can be achieved with simple and inexpensive executable fasteners 40.
  • 28 can be effectively prevented at the dimensions given a laterally reversed mounting of the insert tool 12 on an identical driving flange without Kod michserhebept 28, since the fastener 40 with its dimensions given below by a laterally arranged breakthrough 42 is not feasible.
  • the dimension of the aperture 42 and its position relative to the recesses 32 is designed so that when abutting the web 82 to the stop 78, the recesses 32 are aligned with the Kodiererhebept 28. In this position, the hub 16 can be lifted from the driving device 22. Due to the shaping and dimensioning of the opening 42 with the blocking element 76 and the third region 70, the fastening element 40 may have the holding element 50, which projects further in the release direction than the web 82 of the fastening element 40. This enables a particularly simple and inexpensive production of a stable fastening element 40 and a stable mounting of the hub 16 on the driving device 22nd
  • the hub 16 is configured in its radially inner region with a cup-shaped recess 84 with a cup depth 86 of about 6 mm and an inner diameter 92 of 47 mm. From a Napfinnenwand 88 formed thereby, the openings 42 are removed with a minimum distance 90 of about 2 mm. Through this relatively far radially outward positioning of the apertures 42 within the hub 16 may be a stable axial fixation of the hub 16 on the driving device 22 can be achieved by the holding elements 50.
  • the detent pins 36 When engaging the detent pins 36 designed as fastening elements into the depressions 52, the detent pins 36, which have an outer diameter 94 of 5.5 mm, are arranged in the depressions 52 with a clearance of 0.5 mm.
  • the locking pin 36 engage in the recesses 52, even if the locking pin 36 or the recesses 52 are heavily contaminated. In this way, a secure fixation of the insert tool 12 in the tangential direction 30 can be ensured even with a heavily soiled insert tool 12.
  • the hub 16 can not be centered by the locking pins 36 are held on the driving device 22.
  • Such a necessary centering is achieved by the dimensioning of the Zentrier tellbruchs 26 and the Zentrierbunds 24, the game to each other by about a factor of 17 is smaller than the clearance between the locking pin 36 and the recesses 52.
  • the inner radius 96 of the Zentrier tellbruchs 26 is 11.1 mm while the outer radius 98 of the centering collar 24 is 11.115 mm. Since both the centering collar 24 and the centering opening 26 are configured circular, the clearance between centering collar 24 and centering opening 26 is 0.03 mm.
  • the locking pins 36 Due to the relatively large clearance between the locking pin 36 and the recesses 52 which can be achieved by an elastic deformation bearing surface between the locking pin 36 and the Recesses 52 during operation of the insert tool 12 is very small.
  • the locking pins 36 are made of a hardened steel, whereas the recesses 52 of the hub 16 are formed from an uncured metal, such as an unhardened steel sheet.
  • the locking pin 36 can press into the recesses 52 and deform it slightly, so that a sufficiently large contact surface between locking pin 36 and recess 52 is formed by the wear of the locking pin 36 even with strong vibration of the insert tool 12 low is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP04820605A 2003-12-20 2004-11-09 Einsatzwerkzeug für einen winkelschleifer Not-in-force EP1697086B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10360248A DE10360248A1 (de) 2003-12-20 2003-12-20 Einsatzwerkzeug für einen Winkelschleifer
PCT/EP2004/052876 WO2005061180A1 (de) 2003-12-20 2004-11-09 Einsatzwerkzeug für einen winkelschleifer

Publications (2)

Publication Number Publication Date
EP1697086A1 EP1697086A1 (de) 2006-09-06
EP1697086B1 true EP1697086B1 (de) 2008-07-02

Family

ID=34706393

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04820605A Not-in-force EP1697086B1 (de) 2003-12-20 2004-11-09 Einsatzwerkzeug für einen winkelschleifer

Country Status (5)

Country Link
US (1) US7722445B2 (zh)
EP (1) EP1697086B1 (zh)
CN (1) CN100540222C (zh)
DE (2) DE10360248A1 (zh)
WO (1) WO2005061180A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10360252A1 (de) * 2003-12-20 2005-07-21 Robert Bosch Gmbh Werkzeugadapter
US8430725B2 (en) * 2008-12-19 2013-04-30 Jovan Pajovic Abrasive disc construction
US8192255B2 (en) * 2010-02-11 2012-06-05 Eric Gallup Tool holder with tapered slot for a grinding machine
CN102814792B (zh) * 2011-06-09 2014-12-17 苏州宝时得电动工具有限公司 动力工具及应用于该动力工具的工作头和转接器
US20190270178A1 (en) 2018-03-04 2019-09-05 Osborn GmbH Rotary Surface Finishing Implement with Tool Mounting Adapter
CN111546159B (zh) * 2020-06-08 2021-06-25 上海高仙自动化科技发展有限公司 抛光头组件及石材抛光机器人
CN111660193B (zh) * 2020-06-08 2021-08-10 苏州高之仙自动化科技有限公司 抛光头组件及石材抛光机器人

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295262A (en) * 1964-06-17 1967-01-03 Gen Pneumatic Products Corp Pneumatic motor mechanism for hand tools
US5346453A (en) * 1993-08-12 1994-09-13 Rivera Bottzeck Otto Multiple bit power drill
US5406752A (en) * 1993-09-13 1995-04-18 American Pneumatic Technologies Reversible sander
US6093090A (en) * 1998-01-28 2000-07-25 The Stanley Works Reversible clamping hub
DE29900612U1 (de) * 1999-01-15 1999-03-18 Chung, Lee-Hsin-Chih, Chung-Li, Taoyuan Verzögerungseinrichtung für eine Schleifmaschine
US6309288B1 (en) * 2000-02-22 2001-10-30 Chung Lee Hsin-Chih Retarding mechanism for a grinding machine
DE10017458A1 (de) * 2000-04-07 2001-10-18 Bosch Gmbh Robert Schleifmaschinenwerkzeugaufnahme
DE10017981A1 (de) * 2000-04-11 2001-10-25 Bosch Gmbh Robert Werkzeugaufnahme
DE10131326A1 (de) 2001-06-28 2003-01-16 Bosch Gmbh Robert Einsatzwerkzeug für Schleifmaschinen
DE10136459A1 (de) * 2001-07-26 2003-02-13 Bosch Gmbh Robert System mit einer Werkzeugaufnahme
DE10218196B4 (de) 2002-04-24 2017-06-29 Robert Bosch Gmbh Einsatzwerkzeug und Schnellspannsystem mit einer rotierend antreibbaren, schweibenförmigen Nabe
DE10222292A1 (de) * 2002-05-18 2003-12-04 Bosch Gmbh Robert System mit einer Werkzeugaufnahme
DE10225583A1 (de) 2002-06-10 2004-01-08 Robert Bosch Gmbh Werkzeugaufnahme und Einsatzwerkzeug
TWM255104U (en) * 2003-02-05 2005-01-11 Applied Materials Inc Retaining ring with flange for chemical mechanical polishing
US6813837B1 (en) * 2003-06-02 2004-11-09 Lung-Hui Chen Bi-directional rotation pneumatic cutting machine
US6984169B2 (en) * 2003-06-04 2006-01-10 Lung-Hui Chen Bi-directional rotation pneumatic grinding tool
US6905401B1 (en) * 2004-05-07 2005-06-14 Sunmatch Industrial Co., Ltd. Bi-directional rotation pneumatic grinding tool
US7029385B1 (en) * 2005-07-27 2006-04-18 Fu-Chun Wang Two-way rotary multi-function polisher

Also Published As

Publication number Publication date
CN1898063A (zh) 2007-01-17
CN100540222C (zh) 2009-09-16
US7722445B2 (en) 2010-05-25
DE10360248A1 (de) 2005-07-28
DE502004007518D1 (de) 2008-08-14
WO2005061180A1 (de) 2005-07-07
EP1697086A1 (de) 2006-09-06
US20070060029A1 (en) 2007-03-15

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