EP1291134A1 - Plateau de polissage - Google Patents

Plateau de polissage Download PDF

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Publication number
EP1291134A1
EP1291134A1 EP02017022A EP02017022A EP1291134A1 EP 1291134 A1 EP1291134 A1 EP 1291134A1 EP 02017022 A EP02017022 A EP 02017022A EP 02017022 A EP02017022 A EP 02017022A EP 1291134 A1 EP1291134 A1 EP 1291134A1
Authority
EP
European Patent Office
Prior art keywords
plate
sanding
spring
grinding
teeth
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Withdrawn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
EP02017022A
Other languages
German (de)
English (en)
Inventor
Steffen Wuensch
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 EP1291134A1 publication Critical patent/EP1291134A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the present invention is based on a grinding plate according to the preamble of claim 1.
  • a grinding plate is known from US Pat. No. 5,309,682 identifies the lower, separate sanding pad on the underside a sanding sheet can be attached. With its back is the sanding pad with Velcro fastener on one made of plastic existing round support plate releasably attachable to the Can be attached to the center of an output shaft of a hand grinder is. The back of the support plate is behind directed above and facing the output shaft.
  • the sanding pad is attached to the support plate using a Velcro fastener can be coupled and transmits the movement of the support plate or the output shaft on the sanding sheet.
  • the grinding pads of the known grinding plate can be different be thick and can be used to a limited extent Grinding concave or convex curved surfaces become. In such applications, however Adaptation of the sanding pad to certain radii of curvature of workpiece surfaces limited to relatively small Curvatures, d. H. Radii of curvature of the workpiece surface of more than 200 mm.
  • the invention with the features of the characterizing part of claim 1 has the advantage that workpiece surfaces with radii of curvature ⁇ 200 mm with even contact pressure and even grinding removal can be processed. Both concave and convex can be curved Machined surfaces with one and the same sanding plate become.
  • the plate spring or the leaf spring as a round, flat ring with radially inward tooth profile is configured, with a hub on the radially after holding inward-facing tooth tips is easy Way a bistable spring element can be realized, which at Automatically exceed a certain bending position pivots further into a mirror-symmetrical bending position and remains in it. So is a concave pre-curved one Leaf spring or disc spring can be folded into a convex position.
  • leaf or disc spring with polyurethane or the like foam is foamed, is the spring characteristic by selecting the foam in conjunction with its dimensions can be determined particularly well.
  • the sanding plate has dust extraction holes that axially pass through the grinding disc in the area of the tooth gaps, is the dust extraction without interfering with the spring characteristics the leaf or disc spring possible.
  • the invention is based on an exemplary embodiment explained with accompanying drawing.
  • FIG. 1 shows a hand tool 10 with a housing 12, the above with an unspecified handle Power button carries.
  • An output shaft protrudes from the housing 12 below 13 on which a round grinding plate 14 by means of Screw 15 is held in a rotationally fixed, which is the Rotary movement of the output shaft 13 follows.
  • the grinding plate 14 has a central hub 16 that a has central, axial, through hole 17, through that the bolt 15 occurs and so the back of the hub 16 holds on the output shaft 13.
  • the center hub is centered a flat, ring-like disc spring 22, the more essential Is part of a support plate 18 ( Figure 4.6).
  • the Disc spring 22 carries a tooth profile directed radially inwards 34 with tooth gaps 36 and flat, tongue-like teeth 38. These occur with their radially inner ends into the outer edge of the flat, disk-like hub 16.
  • the plate spring 22 is on both sides with polyurethane or Similar foam foams and thus forms the one Foam cushion 20 surrounding support plate 18.
  • the foam cushion 20 has a Velcro fabric on its underside 27, to which a sanding sheet 29 can be attached.
  • the existing of disc spring 22 and grinding pad 20 Sanding plate 14 has a plurality of axially penetrating dust extraction holes 40, of which only one is shown and that from the back with unspecified suction is predictable.
  • the grinding plate On the hub 16 is the grinding plate with a screw 15 14 attached to the drive shaft 13 and is therefore light interchangeable.
  • Plastic existing hub 16 is the plate spring 22,23, 24,25 connected, which is designed as a bistable switching spring is and forms a form-fitting insert that the foamed PU or integral foam, which on both sides Disc spring 22 forms abrasive pad 20 forms, holds.
  • the plate spring 18 enables switching and control functions perform. It is used in its in polyurethane foam embedded layer under force to one convex or concave backing pad / backing pad 14 to be deformed. Leave with such grinding plates predominantly spherical or spherical shapes evenly grind.
  • the compliance / deformability of the Disc spring or the grinding plate / grinding plate 14, 54 allowed grinding of workpiece surfaces with almost flat surfaces Shape. Is about the flatness of the grinding plate or If the grinding plates are pressed further axially, a Snap effect, and the sanding plate or the sanding plate takes the reverse arched shape, i.e. H. from the concave in the convex shape.
  • the grinding plate 14 shown in Figure 2 is without a hand tool shown and is basically with the identical to Figure 1.
  • Figure 3 shows the plate spring 22 in longitudinal section, the Truncated cone shape of the plate spring 22 is particularly clear.
  • the outer, continuous ring 32 can be seen, the radially inward into tooth profile 34 with teeth 38 transforms.
  • Figure 4 shows the top view of the plate spring 22 according to FIG. 3, the tooth profile 34 being particularly clear, whose teeth extend radially inwards, evenly spaced by tooth gaps 36.
  • Figures 5, 6 show another embodiment of a bistable disc spring 23, which is different from the disc spring 22 differs in that teeth 78 are wider than that There are tooth gaps 76 and the tips of the teeth 38 to extend further into the center of the circular disc spring, so that the spring characteristic is harder.
  • Figure 7 shows in the force-displacement diagram, as with increasing Force is reached to a maximum. With increasing strength the counterforce of the spring less; if flat, this jumps Spring over and is out of this position when grinding concave surfaces can be loaded up to a maximum.
  • FIG. 8 shows a characteristic curve of the plate spring that is obtained in this way is that the spring force increases with constant pressure and snapped before the flat position. Will the disc spring 22 relieved, the return to the initial state on. With such a characteristic can machined only concave and convex workpiece surfaces become. Sanding flat surfaces is only possible with considerable qualitative concessions possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP02017022A 2001-09-08 2002-07-27 Plateau de polissage Withdrawn EP1291134A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10144274 2001-09-08
DE2001144274 DE10144274A1 (de) 2001-09-08 2001-09-08 Schleifplatte

Publications (1)

Publication Number Publication Date
EP1291134A1 true EP1291134A1 (fr) 2003-03-12

Family

ID=7698318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017022A Withdrawn EP1291134A1 (fr) 2001-09-08 2002-07-27 Plateau de polissage

Country Status (3)

Country Link
EP (1) EP1291134A1 (fr)
CN (1) CN1404963A (fr)
DE (1) DE10144274A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2857610A1 (fr) * 2003-07-16 2005-01-21 Essilor Int Outil pour le surfacade d'une surface optique
FR2900356A1 (fr) * 2006-04-27 2007-11-02 Essilor Int Outil de surfacage d'une surface optique
US9132527B2 (en) 2010-08-31 2015-09-15 Jöst Gmbh Backing plate unit for a rotary grinding machine
WO2017025303A1 (fr) * 2015-08-11 2017-02-16 Festool Gmbh Disque de ponçage et machine de ponçage équipée d'un tel disque

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE476276T1 (de) 2007-06-22 2010-08-15 Metabowerke Gmbh Schleifwerkzeuggerät
FR2935627B1 (fr) * 2008-09-10 2010-09-03 Essilor Int Outil de surfacage a qualite optique
CN112873026A (zh) * 2021-01-13 2021-06-01 意力(广州)电子科技有限公司 一种供料机构及抛光装置
CN112872929B (zh) * 2021-01-13 2023-06-09 意力(广州)电子科技有限公司 一种抛光装置及圆柱形零部件的抛光方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665292A (en) * 1925-11-27 1928-04-10 Gen Motors Corp Buffer
US3583111A (en) * 1966-08-22 1971-06-08 David Volk Lens grinding apparatus
US5309682A (en) * 1990-03-28 1994-05-10 Robert Bosch Gmbh Hand held power tool with working disc

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665292A (en) * 1925-11-27 1928-04-10 Gen Motors Corp Buffer
US3583111A (en) * 1966-08-22 1971-06-08 David Volk Lens grinding apparatus
US5309682A (en) * 1990-03-28 1994-05-10 Robert Bosch Gmbh Hand held power tool with working disc

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100795456B1 (ko) * 2003-07-16 2008-01-16 에실러에떼르나쇼날(꽁빠니제네랄돕띠끄) 광학적 표면 마감 장치
WO2005007340A2 (fr) * 2003-07-16 2005-01-27 Essilor International (Compagnie Generale D'optique) Outil pour le surfaçage d’une surface optique
WO2005007340A3 (fr) * 2003-07-16 2005-03-24 Essilor Int Outil pour le surfaçage d’une surface optique
US7223164B2 (en) 2003-07-16 2007-05-29 Essilor International (Compagnie Generale D'optique) Optical surface-finishing tool
AU2004256949B2 (en) * 2003-07-16 2008-05-29 Essilor International (Compagnie Generale D'optique) Optical surface-finishing tool
FR2857610A1 (fr) * 2003-07-16 2005-01-21 Essilor Int Outil pour le surfacade d'une surface optique
FR2900356A1 (fr) * 2006-04-27 2007-11-02 Essilor Int Outil de surfacage d'une surface optique
WO2007128894A1 (fr) * 2006-04-27 2007-11-15 Essilor International (Compagnie Generale D'optique) 'outil de surfaçage d'une surface optique'
AU2007247018B2 (en) * 2006-04-27 2012-03-15 Essilor International Optical surface surfacing tool
KR100955617B1 (ko) * 2006-04-27 2010-05-03 에실러에떼르나쇼날(꽁빠니제네랄돕띠끄) 광학표면을 표면가공하기 위한 공구
US7559829B2 (en) 2006-04-27 2009-07-14 Essilor International (Compagnie Generale D'optique) Tool for surfacing an optical surface
US9132527B2 (en) 2010-08-31 2015-09-15 Jöst Gmbh Backing plate unit for a rotary grinding machine
EP2611573B1 (fr) * 2010-08-31 2017-03-01 Jöst GmbH Unité de plateau circulaire de meulage pour une meuleuse rotative
WO2017025303A1 (fr) * 2015-08-11 2017-02-16 Festool Gmbh Disque de ponçage et machine de ponçage équipée d'un tel disque

Also Published As

Publication number Publication date
DE10144274A1 (de) 2003-03-27
CN1404963A (zh) 2003-03-26

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