EP3846966B1 - Dispositif de ponçage - Google Patents

Dispositif de ponçage Download PDF

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Publication number
EP3846966B1
EP3846966B1 EP19762134.5A EP19762134A EP3846966B1 EP 3846966 B1 EP3846966 B1 EP 3846966B1 EP 19762134 A EP19762134 A EP 19762134A EP 3846966 B1 EP3846966 B1 EP 3846966B1
Authority
EP
European Patent Office
Prior art keywords
support element
grinding
abrasive
carrier
grinding device
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.)
Active
Application number
EP19762134.5A
Other languages
German (de)
English (en)
Other versions
EP3846966A1 (fr
Inventor
Christian Wall
Werner Unnerstall
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.)
Rud Starcke GmbH and Co KG
Original Assignee
Rud Starcke GmbH and Co KG
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 Rud Starcke GmbH and Co KG filed Critical Rud Starcke GmbH and Co KG
Publication of EP3846966A1 publication Critical patent/EP3846966A1/fr
Application granted granted Critical
Publication of EP3846966B1 publication Critical patent/EP3846966B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material
    • B24D15/026—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material able to be stripped-off from a built-in delivery spool
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/004—Machines or devices using grinding or polishing belts; Accessories therefor using abrasive rolled strips

Definitions

  • the invention relates to a grinding device according to the preamble of claim 1 and an abrasive.
  • a grinding device is, for example, from US2001031612 A1 known. It discloses a polishing pad which is held on a plate by structures that do not require adhesive.
  • the polishing pad has an upper polishing surface and a lower surface.
  • the underside has a surface profile configured to mate with a complementary surface profile on a panel.
  • Such grinding devices consist of a dimensionally stable support element, which can be in the form of a support plate or as a sanding block, the latter for manual use.
  • the abrasive is in the form of a flexible sanding sheet or a sanding belt, which is held on the support element by means of a Velcro connection, for which purpose the support element/abrasive pairing each has correspondingly designed Velcro layers.
  • abrasive this is provided on the side of a carrier opposite an abrasive layer consisting of an abrasive grain, which can consist of paper, foil, fabric or a combination thereof.
  • the unpublished DE 10 2017 108 191 proposed to hold the abrasive on the support element, i.e. a support plate, in a material, positive or frictional manner, with the frictional connection being produced by sucking the abrasive on the support plate.
  • the cohesive connection is made by gluing, whereby the contact surface of the carrier with the support plate is equipped with a self-adhesive layer.
  • the construction of the carrier to provide the Velcro or self-adhesive layer is cost-intensive, especially since such a layer must be designed in multiple stages. In addition, they are subject to relatively high levels of wear and tear due to the connection being made and released.
  • Holding the abrasive on the support element using a vacuum requires special measures with regard to air permeability and sealing.
  • the backing pad must have openings through which air is sucked in to hold the abrasive on it.
  • the disadvantage here is that the carrier is permeable, which means that grinding dust gets into the connection area with the support element, which leads to considerable problems as the operating time increases.
  • a grinding device in which a flexible belt or band serving as a feed and support element is frictionally connected to one side of the belt.
  • the US 5,109,638 A discloses a multilayer abrasive material in which a side facing away from the abrasive layer is formed from a durable, non-adhesive backing material with a textured outer surface.
  • the invention is based on the object of further developing a grinding device and an abrasive of the generic type in such a way that they are easier and more cost-effective to produce and their handling is easier.
  • the coefficient of friction between the support element and the abrasive held over its entire surface is sufficient to absorb the longitudinal and transverse forces that occur during grinding, with the coefficient of friction of the pairing being between 0.2 and 0.5 according to the invention.
  • Such a coefficient of friction is sufficient, particularly when selectively grinding a finished surface, with the frictional force between the backing plate and the abrasive being generated by pressing when the grinding device, ie the supporting element and the abrasive, are on the surface to be processed is pressed.
  • This frictional force is preferably between 0.5 and 2.0 N/mm 2 .
  • the abrasive is designed to be flexible.
  • the abrasive which can be available as a single sheet or as an abrasive belt, consists of a carrier and an abrasive layer held on it. While the carrier, which forms a contact layer to the support element, is constructed in several stages according to the prior art, in particular prepared for a Velcro or adhesive connection, the carrier according to the invention is only made in one layer from a suitable plastic that is both elastic and flexible should.
  • Polymers, elastomers or leather are particularly suitable for this, with the thickness of the carrier being between 0.7 and 4 mm.
  • the flexible and elastic properties of the carrier make it possible to grind both flat and curved surfaces, the latter being convex or concave.
  • the frictional connection between the support element and the abrasive is particularly advantageous when the abrasive is designed in the form of a web. Since the sanding belt is precisely aligned and guided in the connection area with the support element, problem-free positioning between the support element and the sanding sheet is guaranteed.
  • the sanding belt is raised for the further cycle of the support element or the sanding belt slides over the support plate if the lifting or tearing force with which the sanding belt is released from the support element is greater than the frictional force between the support element and the sanding belt.
  • the grinding itself is carried out, as mentioned, in a point or area manner, with orbital, rotating or vibrating movements.
  • the carrier carrying the abrasive can be made of paper, while the contact surface resting on the support element is made of an elastomeric, rubber-like or leather material.
  • the surface assigned to the support element is slightly structured and also made of an elastomeric, rubber-like or leather material.
  • the rough surface of the support formed from a fabric is slightly structured on the side held frictionally on the support element and may be formed from a foam. Additional anti-slip agents are not absolutely necessary for the pairings mentioned.
  • the surfaces can be dry, moistened or wet, with a corresponding influence on the friction pairs.
  • the only figure shows a schematic side view of a grinding device according to the invention.
  • the figure shows a grinding device 1 for removing a defect, in particular a finished surface of an object (not shown) by grinding.
  • This grinding device 1 has a robot arm 2 and a support element 3 held thereon in the form of a support plate, which can be moved to the surface for grinding the defect area, for example orbitally, vibrating or rotating.
  • an abrasive 5 in the example in the form of a grinding belt, rests frictionally on the support element 3, the back of the abrasive 5, so to speak, resting on the support element 3 is designed as a carrier, which on the other hand carries an abrasive grain that contacts the surface of the object.
  • the abrasive 5 is held in a dispenser in the form of a cassette 4 and wound in a roll 6 onto an unwinding shaft 7 and is wound onto a winding shaft 8, preferably in cycles, in accordance with the grinding process.
  • the frictional connection between the support element 3 and the abrasive 5 is released by lifting the support element 3, so that the abrasive 5 can be continued without hindrance.

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)

Claims (6)

  1. Dispositif de ponçage comportant un élément d'appui (3) et un moyen abrasif (5), de préférence flexible, maintenu sur celui-ci, qui se compose d'un support s'appliquant sur une surface fermée de l'élément d'appui (3) et d'une couche abrasive, le moyen abrasif (5), dont la surface du support tournée vers l'élément d'appui (3) est structurée, étant maintenu en position de ponçage sur toute sa surface par friction sur l'élément d'appui (3), et l'élément d'appui étant réalisé sous la forme d'un plateau d'appui, caractérisé en ce que le coefficient de friction du couple élément d'appui (3)/moyen abrasif (5) est compris entre 0,2 et 0,5.
  2. Dispositif de ponçage selon la revendication 1, caractérisé en ce que la force de friction produite par la pression de l'élément d'appui (3) contre le moyen abrasif (5) est comprise entre 0,5 et 2,0 N/mm2.
  3. Dispositif de ponçage selon la revendication 1 ou 2, caractérisé en ce que la face du support tournée vers l'élément d'appui (3) est constituée d'un polymère, d'un élastomère ou de cuir.
  4. Dispositif de ponçage selon l'une des revendications précédentes, caractérisé en ce que l'épaisseur du support sur la face tournée vers l'élément d'appui (3) est comprise entre 0,7 et 4 mm.
  5. Dispositif de ponçage selon l'une des revendications précédentes, caractérisé en ce que la surface du support tournée vers l'élément d'appui (3) est constituée d'une mousse synthétique.
  6. Dispositif de ponçage selon l'une des revendications précédentes, caractérisé en ce que le moyen abrasif (5) est réalisé sous la forme d'une bande abrasive.
EP19762134.5A 2018-09-05 2019-08-30 Dispositif de ponçage Active EP3846966B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018121625.4A DE102018121625A1 (de) 2018-09-05 2018-09-05 Schleifeinrichtung
PCT/EP2019/073205 WO2020048886A1 (fr) 2018-09-05 2019-08-30 Dispositif de ponçage

Publications (2)

Publication Number Publication Date
EP3846966A1 EP3846966A1 (fr) 2021-07-14
EP3846966B1 true EP3846966B1 (fr) 2023-10-18

Family

ID=67810609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19762134.5A Active EP3846966B1 (fr) 2018-09-05 2019-08-30 Dispositif de ponçage

Country Status (12)

Country Link
US (1) US20210316419A1 (fr)
EP (1) EP3846966B1 (fr)
JP (1) JP2021534993A (fr)
KR (1) KR20210042990A (fr)
CN (1) CN112752631B (fr)
BR (1) BR112021000891A2 (fr)
CA (1) CA3107230A1 (fr)
DE (1) DE102018121625A1 (fr)
ES (1) ES2968470T3 (fr)
MX (1) MX2021002576A (fr)
WO (1) WO2020048886A1 (fr)
ZA (1) ZA202100300B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017108191A1 (de) * 2017-04-18 2018-10-18 Rud. Starcke Gmbh & Co. Kg Verfahren zum partiellen Schleifen einer Oberfläche sowie Schleifeinrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999021683A1 (fr) * 1997-10-29 1999-05-06 Mandzsu Jozsef Sr Outil plaque comprenant un element de fixation rapide dote d'une surface de travail
US6116998A (en) * 1997-01-13 2000-09-12 Struers A/S Attachment means and use of such means for attaching a sheet-formed abrasive or polishing means to a magnetized support
US20010031612A1 (en) * 2000-01-06 2001-10-18 Scott Diane B. Retention of a polishing pad on a platen

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2258733A (en) * 1940-08-30 1941-10-14 Gen Motors Corp Sanding machine
US2309819A (en) * 1941-04-18 1943-02-02 Carborundum Co Art of grinding and polishing glass and apparatus therefor
US3345785A (en) * 1964-12-07 1967-10-10 Warren N Riker Sanding disc assembly
US3498010A (en) * 1965-06-03 1970-03-03 Nobuyoshi Hagihara Flexible grinding disc
DE1973875U (de) * 1965-12-31 1967-11-30 Franz Josefy Bandschleifmaschine.
US4010583A (en) * 1974-05-28 1977-03-08 Engelhard Minerals & Chemicals Corporation Fixed-super-abrasive tool and method of manufacture thereof
DE3642086A1 (de) * 1986-12-10 1988-06-23 Fraunhofer Ges Forschung Schleifvorrichtung
US5109638A (en) * 1989-03-13 1992-05-05 Microsurface Finishing Products, Inc. Abrasive sheet material with non-slip backing
EP0619165A1 (fr) * 1993-04-07 1994-10-12 Minnesota Mining And Manufacturing Company Article abrasif
DE19632809C2 (de) * 1996-08-14 2002-06-20 Infineon Technologies Ag Gerät zum chemisch-mechanischen Polieren von Wafern
US5967882A (en) * 1997-03-06 1999-10-19 Keltech Engineering Lapping apparatus and process with two opposed lapping platens
US6634929B1 (en) * 1999-04-23 2003-10-21 3M Innovative Properties Company Method for grinding glass
US6685539B1 (en) * 1999-08-24 2004-02-03 Ricoh Company, Ltd. Processing tool, method of producing tool, processing method and processing apparatus
US7520800B2 (en) * 2003-04-16 2009-04-21 Duescher Wayne O Raised island abrasive, lapping apparatus and method of use
ES2398931T3 (es) * 2007-08-03 2013-03-22 Saint-Gobain Abrasives, Inc. Artículo abrasivo con capa promotora de la adhesión
DE102010001769A1 (de) * 2010-02-10 2011-08-11 JÖST GmbH, 69483 Schleif- und Reinigungskörper
US9321149B2 (en) * 2011-11-09 2016-04-26 3M Innovative Properties Company Composite abrasive wheel
TWI548481B (zh) * 2014-11-17 2016-09-11 三芳化學工業股份有限公司 拋光墊及其製造方法
DE102017108191A1 (de) * 2017-04-18 2018-10-18 Rud. Starcke Gmbh & Co. Kg Verfahren zum partiellen Schleifen einer Oberfläche sowie Schleifeinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6116998A (en) * 1997-01-13 2000-09-12 Struers A/S Attachment means and use of such means for attaching a sheet-formed abrasive or polishing means to a magnetized support
WO1999021683A1 (fr) * 1997-10-29 1999-05-06 Mandzsu Jozsef Sr Outil plaque comprenant un element de fixation rapide dote d'une surface de travail
US20010031612A1 (en) * 2000-01-06 2001-10-18 Scott Diane B. Retention of a polishing pad on a platen

Also Published As

Publication number Publication date
DE102018121625A1 (de) 2020-03-05
ES2968470T3 (es) 2024-05-09
BR112021000891A2 (pt) 2021-04-13
KR20210042990A (ko) 2021-04-20
ZA202100300B (en) 2022-05-25
MX2021002576A (es) 2021-05-12
CA3107230A1 (fr) 2020-03-12
CN112752631A (zh) 2021-05-04
EP3846966A1 (fr) 2021-07-14
CN112752631B (zh) 2023-02-17
WO2020048886A1 (fr) 2020-03-12
US20210316419A1 (en) 2021-10-14
JP2021534993A (ja) 2021-12-16

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