EP0557773A1 - Disque support pour ponçage multi-couches - Google Patents

Disque support pour ponçage multi-couches Download PDF

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Publication number
EP0557773A1
EP0557773A1 EP93101920A EP93101920A EP0557773A1 EP 0557773 A1 EP0557773 A1 EP 0557773A1 EP 93101920 A EP93101920 A EP 93101920A EP 93101920 A EP93101920 A EP 93101920A EP 0557773 A1 EP0557773 A1 EP 0557773A1
Authority
EP
European Patent Office
Prior art keywords
driver
grinding
output shaft
grinding plate
arrangement 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
EP93101920A
Other languages
German (de)
English (en)
Other versions
EP0557773B1 (fr
Inventor
Klaus Wurst
Julian Dipl.-Ing. Pfaundler (Fh)
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 EP0557773A1 publication Critical patent/EP0557773A1/fr
Application granted granted Critical
Publication of EP0557773B1 publication Critical patent/EP0557773B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material
    • 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

Definitions

  • the invention relates to a sanding disc according to the preamble of claim 1.
  • a generic grinding plate which is provided with a central, pin-like, non-releasable head piece which is connected via a thread to the free end of the output shaft of a grinding machine.
  • the head piece is in the form of a disk approximately two thirds of the size of the grinding plate, which runs to the center of the grinding plate in a central pin with a central bore.
  • the free end of the output shaft protrudes into the bore.
  • This configuration of the head piece makes the sanding plate relatively heavy. Due to the large mass, even small irregularities in the mass distribution have an effect - i.e. Unbalance - extremely strong on the vibration behavior of the grinding plate. Therefore, this grinding plate must be particularly carefully balanced, which is complicated by the fact that the grinding plate must be screwed onto a long threaded pin before it can be operated at the intended minimum speed.
  • the grinding plate according to the invention with the characteristic features of claim 1 has the advantage that it is lighter and self-centered exactly with respect to the output shaft, so that no unbalance can occur. This affects the lifespan of the sanding plate and also the grinding machine that is operated with this sanding plate.
  • FIG. 1 shows a first exemplary embodiment of a grinding plate with driving shaft
  • FIG. 2 shows a perspective, exploded view of the first exemplary embodiment
  • FIG. 3 shows a top view of the first exemplary embodiment
  • FIG. 4 shows a second exemplary embodiment of a grinding plate with driving element
  • FIG. 5 shows a perspective illustration of a Driver according to Figure 4.
  • the centrally cut grinding plate 1 shown in FIG. 1 consists of a support plate 3 arranged on its upper side, a cushion 5 arranged on its underside, between which a perforated steel disk 7 serving as a reinforcing part is arranged.
  • the cushion 5 carries on its underside a Velcro fastener 9, which is suitable for holding abrasive sheets (not shown) with a velor back or for receiving further intermediate pillows (not shown) with a velor back and Velcro fastener.
  • the grinding plate 1 has a plurality of axial openings which serve as dust extraction openings 11 and not with the suction channels shown are assigned to remove the grinding dust.
  • a central through bore 13 is aligned with a bore 15 in the steel disk 7 for the passage of a screw 17, with which the grinding plate 1 can be coupled to the grinding machine output shaft so that it can be taken along.
  • the cushion 5 has a central recess 19 so that the underside of the steel disc 7 is exposed and the head of the screw 17 can come to rest against it.
  • the central recess 19 can be connected to the dust extraction openings 11 by means of radial channels (not shown) in the cushion 5 and thereby serve to remove the dust.
  • the support plate 3 carries on its upper side a collar which is arranged concentrically around the through hole 13 and which serves as a centering ring 21.
  • the support plate 3 and the steel disk 7 concentrically with the through hole 13 on a common pitch circle three continuous recesses, which serve as tooth engagement holes 23.
  • the support plate 3 On its underside, the support plate 3 carries a plurality of annular ribs 35 of different diameters which merge into one another and a plurality of radial ribs which cross the circular ribs and connect them to one another.
  • a driver 25, to be axially coupled to the grinding machine output shaft, not shown, consists of a driver shaft 27, which widens on its side facing the grinding plate 1 to a plate-like tooth carrier 29, which has three axially projecting teeth 31 on its circumference.
  • the driver 25 is provided with a central threaded bore 33 into which the screw 17 can be screwed in order to hold the grinding plate 1 axially on the driver 25.
  • the grinding plate 1 is coupled to the driver 25 in the following way:
  • the driver 25 is placed in the centering ring 21 on the upper side of the support plate 3 in such a way that the teeth 31 enter the tooth engagement bores 23 and by means of positive engagement with the driver 25, the grinding plate is rotated 1 effect.
  • the inner diameter of the three-part centering ring 21 is only slightly larger than the outer diameter of the Zannnum 29, so that the driver 25 is centered when coupled to the grinding plate 1, radially tightly gripped, arranged and axially fixed by the screw 17 in this position.
  • the centering ring 21 also serves as a reinforcing rib on the top of the support plate 3.
  • the exploded view of the exemplary embodiment according to FIG. 1 shown in FIG. 2 illustrates the arrangement and functioning of the teeth 31 with the tooth engagement bores 23. It is also clear that the steel disc 7 is continuously penetrated by the tooth engagement bores 23 and the central through bore 13 and that it acts as a captive washer and as a stiffening part for the grinding plate 1 at the same time. In addition, the steel disc 7 can absorb transmission forces of the teeth 31 and transmit them gently to the grinding plate 1.
  • the top view of the grinding plate 1 shown in FIG. 3 shows that the centering ring 21 is divided into three ring segments 23.
  • the segmentation of the centering ring 21 can be explained by the arrangement of the three tooth engagement bores 23 beyond the inner diameter of the centering ring 21, by an engagement in the contour thereof.
  • the exemplary embodiment of a grinding plate 41 shown in FIG. 4 differs from that of FIGS. 1, 2 and 3 primarily by the configuration of the coupling area between the grinding plate 41 and the grinding machine output shaft or by the configuration of the centering ring 61 and the driver 65 1
  • the sanding plate 41 is composed of: support plate 43, cushion 45, steel disc 47, Velcro fastener 9, dust extraction openings 51, central through-hole 53, hole 55, screw 57, central recess 59, centering ring 61.
  • the driver 65 is composed of: driver shaft 67, tooth carrier 69, tooth 71, threaded bores 73.
  • the centering ring 61 has a conical surface 62 on the inside, which is profiled like a gearwheel and into which the bevel gearwheel-shaped conical surface on the end face 64 of the driver 65 can be positioned, self-centering.
  • the cone surface 62 is dimensioned such that when the driver 65 is inserted, a cavity 66 remains, into which, depending on the state of wear of the cone surface 62 or depending on the pretensioning force caused by the screw 57, the driver 65 can plunge more or less deeply.
  • the cavity 66 also forms an escape space for grinding dust that may accumulate, to which dust ejection openings (not shown) are connected.
  • the steel washer 47 is designed here only as a washer and is captively pressed, foamed or glued into the central recess 59. The steel disc 47 is not used here for the rotary driving between the driver 65 and the grinding plate 41.
  • the driver is shown in perspective as a detail and illustrates its bevel gear-like configuration in the manner of a negative impression of the conical surface 62 of the centering ring 61.
  • the tooth flanks or impressions 63 of the conical surfaces 62 shown here arched can also be designed as right-angled notches if particularly high torques are to be transmitted from the output shaft to the grinding plate 41.
  • a rib-like configuration of the support plate 43 analogous to FIG. 1 is not shown.
  • the grinding plate has only two tooth engagement holes and the centering ring of the grinding plate is divided in the vicinity of the tooth engagement holes and consists of two segments.
  • the associated driver carries two axially projecting teeth in accordance with the number of two tooth engagement bores, the reasonable minimum number for a reliable function and simple manufacture of the driver.
  • the driver is freely rotatably coupled to the grinding machine shaft or to an eccentric pin that is rotationally fixedly coupled to it via a roller bearing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP93101920A 1992-02-27 1993-02-08 Ponceuse avec adapteur pour faire tourner un disque support multi-couches pour ponçage. Expired - Lifetime EP0557773B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4205977 1992-02-27
DE4205977A DE4205977A1 (de) 1992-02-27 1992-02-27 Schleifteller aus mehreren werkstoffschichten

Publications (2)

Publication Number Publication Date
EP0557773A1 true EP0557773A1 (fr) 1993-09-01
EP0557773B1 EP0557773B1 (fr) 1998-05-13

Family

ID=6452683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93101920A Expired - Lifetime EP0557773B1 (fr) 1992-02-27 1993-02-08 Ponceuse avec adapteur pour faire tourner un disque support multi-couches pour ponçage.

Country Status (2)

Country Link
EP (1) EP0557773B1 (fr)
DE (2) DE4205977A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29520566U1 (de) * 1995-12-29 1996-02-22 Joest Peter Direkt oder indirekt mit einer Maschine oder einem manuell betreibbaren Schleifmittelhalter adaptierbarer Schleifkörper sowie ein hierfür geeigneter Adapter
GB2322579A (en) * 1997-02-28 1998-09-02 Bosch Gmbh Robert A grinding plate for a hand-held tool
EP1186379A3 (fr) * 2000-09-07 2003-03-26 Tholes srl Dispositif de meulage et de ponçage de surface
GB2390316A (en) * 2002-07-05 2004-01-07 Bosch Gmbh Robert Backing pad for an abrasive disc
WO2006100153A1 (fr) * 2005-03-23 2006-09-28 Robert Bosch Gmbh Machine-outil manuelle pourvue d'un disque de ponçage
EP1775071A1 (fr) 2003-08-11 2007-04-18 UFI Schleiftechnik GmbH & Co. KG Disque abrasif pour machine à meuler
US7223165B2 (en) 2003-12-06 2007-05-29 Robert Bosch Gmbh Abrasive pad for a manual grinding machine
WO2008098637A1 (fr) * 2007-02-16 2008-08-21 Robert Bosch Gmbh Disque de meulage pour une meuleuse à excentrique
EP1977858A1 (fr) 2007-04-02 2008-10-08 UFI Schleiftechnik GmbH & Co. KG Système de rectification
WO2012019286A1 (fr) * 2010-08-10 2012-02-16 Miksa Marton Appareil et procédé de traitement de surface

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10357652A1 (de) * 2003-12-10 2005-07-07 Robert Bosch Gmbh Elektrohandwerkzeugmaschine, insbesondere Exzenterschleifer
DE102005062459B4 (de) 2005-12-27 2019-01-17 Robert Bosch Gmbh Handschleifmaschine
DE102007039367B4 (de) 2006-09-01 2019-12-19 C. & E. Fein Gmbh Werkzeugbefestigung
DE202006013890U1 (de) 2006-09-01 2006-11-16 C. & E. Fein Gmbh Werkzeugbefestigung
DE202009000880U1 (de) * 2009-01-23 2009-07-09 Kolthoff & Co., Flüelen Schleifteller
US11458595B2 (en) 2018-11-19 2022-10-04 Husqvarna Ab Tool attachment means for power trowels

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581567A (en) * 1948-12-29 1952-01-08 Darrell R Wiley Buffer backing pad
DE8907224U1 (fr) * 1989-06-13 1989-10-05 Ihmels, Manfred
EP0364282A2 (fr) * 1988-10-14 1990-04-18 Minnesota Mining And Manufacturing Company Plateau support avec dispositif d'accouplement et conduits décalés

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581567A (en) * 1948-12-29 1952-01-08 Darrell R Wiley Buffer backing pad
EP0364282A2 (fr) * 1988-10-14 1990-04-18 Minnesota Mining And Manufacturing Company Plateau support avec dispositif d'accouplement et conduits décalés
DE8907224U1 (fr) * 1989-06-13 1989-10-05 Ihmels, Manfred

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29520566U1 (de) * 1995-12-29 1996-02-22 Joest Peter Direkt oder indirekt mit einer Maschine oder einem manuell betreibbaren Schleifmittelhalter adaptierbarer Schleifkörper sowie ein hierfür geeigneter Adapter
GB2322579A (en) * 1997-02-28 1998-09-02 Bosch Gmbh Robert A grinding plate for a hand-held tool
GB2322579B (en) * 1997-02-28 2000-01-12 Bosch Gmbh Robert Grinding plate for a hand-held electric tool with dust extraction
CN1094814C (zh) * 1997-02-28 2002-11-27 罗伯特-博希股份公司 带吸尘装置的手持式电动工具用的磨光板
EP1186379A3 (fr) * 2000-09-07 2003-03-26 Tholes srl Dispositif de meulage et de ponçage de surface
GB2390316A (en) * 2002-07-05 2004-01-07 Bosch Gmbh Robert Backing pad for an abrasive disc
JP2004090212A (ja) * 2002-07-05 2004-03-25 Robert Bosch Gmbh 支持プレートを備えた取付工具
GB2390316B (en) * 2002-07-05 2005-05-18 Bosch Gmbh Robert Insert tool with a support plate
US7458884B2 (en) 2003-08-11 2008-12-02 Ufi Schleiftechnik Gmbh & Co. Kg Grinding disc for grinding machines
EP1775071A1 (fr) 2003-08-11 2007-04-18 UFI Schleiftechnik GmbH & Co. KG Disque abrasif pour machine à meuler
US7223165B2 (en) 2003-12-06 2007-05-29 Robert Bosch Gmbh Abrasive pad for a manual grinding machine
WO2006100153A1 (fr) * 2005-03-23 2006-09-28 Robert Bosch Gmbh Machine-outil manuelle pourvue d'un disque de ponçage
CN101146650B (zh) * 2005-03-23 2012-11-14 罗伯特·博世有限公司 具有一个磨削盘的手持式工具机
WO2008098637A1 (fr) * 2007-02-16 2008-08-21 Robert Bosch Gmbh Disque de meulage pour une meuleuse à excentrique
US8113921B2 (en) 2007-02-16 2012-02-14 Robert Bosch Gmbh Tool set for an eccentric grinder
EP1977858A1 (fr) 2007-04-02 2008-10-08 UFI Schleiftechnik GmbH & Co. KG Système de rectification
WO2012019286A1 (fr) * 2010-08-10 2012-02-16 Miksa Marton Appareil et procédé de traitement de surface
EP2603356A1 (fr) * 2010-08-10 2013-06-19 Miksa Marton Appareil et procédé de traitement de surface
EP2603356A4 (fr) * 2010-08-10 2014-01-08 Miksa Marton Appareil et procédé de traitement de surface
US8636562B2 (en) 2010-08-10 2014-01-28 Miksa Marton Surface treating apparatus and method

Also Published As

Publication number Publication date
DE4205977A1 (de) 1993-09-02
DE59308519D1 (de) 1998-06-18
EP0557773B1 (fr) 1998-05-13

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