EP1797995B1 - Schleifwerkzeug - Google Patents

Schleifwerkzeug Download PDF

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Publication number
EP1797995B1
EP1797995B1 EP05111767A EP05111767A EP1797995B1 EP 1797995 B1 EP1797995 B1 EP 1797995B1 EP 05111767 A EP05111767 A EP 05111767A EP 05111767 A EP05111767 A EP 05111767A EP 1797995 B1 EP1797995 B1 EP 1797995B1
Authority
EP
European Patent Office
Prior art keywords
layer
abrasive
resins
abrasive tool
substrate
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.)
Revoked
Application number
EP05111767A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1797995A1 (de
Inventor
Christian Jentgens
Adrian Schoch
Hans-Ulrich Kaufmann
Peter Eggenberger
René Bunner
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.)
Sia Abrasives Industries AG
Original Assignee
Sia Abrasives Industries AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36095668&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1797995(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sia Abrasives Industries AG filed Critical Sia Abrasives Industries AG
Priority to EP05111767A priority Critical patent/EP1797995B1/de
Priority to PL05111767T priority patent/PL1797995T3/pl
Priority to ES05111767T priority patent/ES2322163T3/es
Priority to PT05111767T priority patent/PT1797995E/pt
Priority to AT05111767T priority patent/ATE425843T1/de
Priority to DE502005006896T priority patent/DE502005006896D1/de
Priority to DE502006008321T priority patent/DE502006008321D1/de
Priority to AT06120537T priority patent/ATE488327T1/de
Priority to EP10181613A priority patent/EP2305426A1/de
Priority to EP06120537A priority patent/EP1795303B1/de
Priority to US11/567,789 priority patent/US20070128989A1/en
Publication of EP1797995A1 publication Critical patent/EP1797995A1/de
Publication of EP1797995B1 publication Critical patent/EP1797995B1/de
Application granted granted Critical
Revoked 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
    • 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 relates to a grinding tool with diamond or cubic boron nitride as abrasive, which is particularly suitable for wet grinding hard surfaces of, for example, ceramic paints.
  • a corresponding to the preamble of claim 1 grinding tool is for example from the US-A-2005/0262773 known.
  • Hard surfaces require a very hard abrasive grain such as diamond, cubic boron nitride or boron carbide. These are quite expensive, which stands in the way of their dissemination.
  • a grinding tool comprising resin bonded abrasive grain selected from the group consisting of diamond and cubic boron nitride, and a substrate having a first abrasive grain bearing layer which is water permeable and has a planar surface and at least one second layer , which can absorb water and is compressible with retention of shape, wherein the substrate is self-adhesive on the side facing away from the abrasive grain.
  • the abrasive grain is applied over the entire surface, but initially only that grain is used, which sits on the protruding parts of the first layer (webs).
  • the inventive grinding tool is characterized by a high degree of flexibility due to the nature of the substrate.
  • the resin-bonded abrasive grain on the surface can thus be pushed out of the tool during the grinding process. This leads to increased service life and gentle machining of the processed product.
  • the lower-lying abrasive particles of the compressible grinding tool can thus be used selectively.
  • the water supplied to the grinding tool is at least partially retained in the second, water-absorbable and compressible layer.
  • the grinding dust arising from grinding can be easily removed by squeezing the grinding tool.
  • the water contained in the second layer is pushed out, passes to the surface of the grinding tool due to the permeability of the grain-carrying layer and rinses the grinding dust located on or in the surface of the grinding tool.
  • the grinding tool can be easily used again following this simple and fast process.
  • the service lives of the grinding tool according to the invention exceed the service lives of conventional full-surface grinding tools by a factor of about 20 to 100.
  • the grinding tool has an amount of abrasive grain on its surface of 10 to 50 g / m 2 , preferably 10 to 30 g / m 2 (the latter corresponds to 50 to 150 carats / m 2 of diamond).
  • the abrasive grain is bonded to the substrate via a resin binder.
  • Metal bonded abrasives are not included in the present invention.
  • the use of a so-called resin-bonded abrasive grain or "Resin-Bond-Diamond” has the advantage that it has an increased Nachharrencing tendency (English high friability).
  • resin binders for example phenolic resins, melamine resins, urea resins, Epoxy resins, polyester resins, polyacrylate resins or polyurethane resins.
  • water-soluble resins such as phenolic resins
  • phenolic resins which are water-soluble in the uncured state.
  • the use of water-soluble resins allows easy recovery of the abrasive grain from wastes that may be incurred in application processes such as spraying.
  • the residue of abrasive grain and uncured resin is simply placed in an aqueous, preferably alkaline, solution and the resin is separated cleanly and efficiently.
  • the application process can be carried out more quickly, without any associated economic disadvantages (loss of abrasive grain).
  • the substrate of the grinding tool according to the invention comprises at least two different layers.
  • the first layer carries the abrasive grain which is bonded to this first layer via the resin binder described above.
  • the first layer must be permeable to water so that the water retained in the second layer can pass through that layer and wash away in or on top of deposited abrasive dust.
  • the first layer also serves to reinforce the second layer. On the other hand, however, it must have sufficient flexibility to allow compression of the second layer to squeeze out the water retained therein, while maintaining the shape of the grinding tool.
  • a knitted fabric such as a Charmeuse or a 1,4-fabric (fabric in which Weft threads and warp threads in the ratio 1: 4 are present) are constructed. It can be used here common knitted fabric or 1,4-fabric.
  • An example are the "Technical Fabrics for abrasive disks" from Sitip (Italy) (polyamide, dtex: 44).
  • the first layer is made of a suede, of spun-bonded nonwovens, needle flow or of a perforated full-surface support.
  • planar is understood to mean that parts (webs) of the first layer protruding from the layer are at essentially the same height (within the scope of customary measuring accuracy).
  • the first layer usually has a thickness of 0.01 cm to 0.1 cm.
  • the selected thickness depends on the requirement profile and can be determined and adjusted by the skilled person without any problems.
  • the grinding tool according to the invention comprises at least one second layer.
  • the second layer must be able to absorb and retain water. Furthermore, the second layer must be compressible so that the water contained therein can be pushed out of this layer and through the first layer. In this case, however, the second layer or the entire grinding tool should be dimensionally true, ie assume its original shape after completion of external force again. In this way, it is ensured that the inventive grinding tool can be used again in the same way and can be freed from grinding dust.
  • the second layer of the substrate of the grinding tool according to the invention thus consists of a soft foam.
  • the skilled person is aware of soft foams.
  • An example is open-celled polyether PU foam.
  • the second layer can consist of several, preferably two, sublayers.
  • An example of this is the "3D spacer fabrics" from Scott & Fyve (Great Britain), a product consisting of two inseparably interwoven fabric layers.
  • the backsheets are not made of foam, it is of course also possible to use two foam underlays.
  • the second layer (or the entirety of sub-layers, which together form the second layer) generally has a thickness of 0.2 cm to 1 cm.
  • the selected thickness depends on the requirement profile and can be determined and adjusted by the skilled person without any problems.
  • the first and second layers may be bonded together in a conventional and known manner, for example by gluing, flame laminating or Velcro bonding. In the latter case, only the first, grain-bearing layer is laminated with a velor. The second layer is then in the form of a reusable intermediate pad. The connection must, however, be permeable to water in any case.
  • the two layers are joined together. But it is also possible to connect both layers permanently, as well as to make the connection only immediately before use. In the latter case, it is possible to provide the second layer on the support of a sander and to connect prior to use with the first layer unit and abrasive grain thereon - advantageously via a releasable connection such as a Velcro connection. As a result, a simple replacement of the first, the abrasive grain bearing layer is possible.
  • the surface of the second layer which faces away from the surface carrying the first layer, is designed such that it is self-adhesive. This can be done by providing on the corresponding surface of the second layer a layer of conventional suede (for example made of nylon) or Velcro or an adhesive layer.
  • a layer of conventional suede for example made of nylon
  • Velcro or an adhesive layer.
  • the inventive grinding tool is particularly suitable for processing surfaces containing ceramic components.
  • surface materials to be treated are: ceramic surfaces per se, ceramic lacquers on wood (eg sealed parquet floors), technical glass, glass, composite materials based on stone or minerals, fibrous composites such as fiberglass plastics (GRPs) or carbon fiber plastics (CFKs) ) or aramid fiber plastics, or "super hard" paints such as epoxy paints.
  • the abrasive tool of the invention is preferably provided in the form of discs or strips for use on conventional hand-held grinders, e.g. Excenterschleifmaschinen be applied.
  • the abrasive tool of the invention can be produced by applying to the first layer of the substrate the abrasive grain with the resin binder by a pressure-free coating process.
  • pressure-free coating methods are, for example, spray coating, dip coating, air knife or transfer method.
  • a water-soluble resin binder in the uncured state. It is then not necessary to take special care in the application process to the effect that the expensive abrasive grain reaches the substrate surface as completely as possible. Rather, faster processes such as over-spraying the substrate (beyond the surface to be coated) can be accomplished by providing a catcher such as a pan adjacent and below the substrate to be coated.
  • the surface treatment with the grinding tools according to the invention is carried out by wet grinding, preferably with a hand sprayer.
  • the expert usually adds just enough water that not the entire surface of the workpiece is wet, but that just the surface to be treated is moistened so far that the grinding tool can absorb the liquid in the compressible part again. If necessary, the skilled person rinses out the compressible part by applying slight pressure and adds new water.
  • a grinding tool 1 according to the invention is shown.
  • the grinding tool has resin-bonded diamond 2 as abrasive grain.
  • the binder resin is preferably a phenolic resin.
  • the diamond is located on the elevations (webs) of the first layer 3, preferably of a knitted fabric.
  • the first layer is permeable to water and has a flat surface.
  • the first layer is located on a second layer 4, which can absorb water and is compressible under retention of shape.
  • this second layer 4 consists of a soft foam.
  • the two layers are connected by a water-permeable connection.
  • a layer 5 On the opposite surface of the second layer 4 is a layer 5, which gives the substrate of the grinding tool self-adhesion.
  • the layer 5 is a Velcro layer or a layer of an adhesive.
  • the grinding performance of the abrasive tool thus produced was determined on 30mm discs with an eccentric grinder. On a scratch-resistant ceramic lacquer was sanded with the grinding tool for 10 s in the same place, before proceeding to the processing of another place. If the ground point appears dull after such machining, the grinding performance is considered good. With the inventive grinding tool, it was possible to this Way to process well over 100 places with good sanding results.
  • abrasive treatment was carried out with a conventional abrasive tool (pad: waterproof paper base or film) with alumina or silicon carbide as the abrasive grain. Already after the processing of 5 points no matting of the worked places was more recognizable. The abrasive was used up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
EP05111767A 2005-12-07 2005-12-07 Schleifwerkzeug Revoked EP1797995B1 (de)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP05111767A EP1797995B1 (de) 2005-12-07 2005-12-07 Schleifwerkzeug
PL05111767T PL1797995T3 (pl) 2005-12-07 2005-12-07 Narzędzie ścierne
ES05111767T ES2322163T3 (es) 2005-12-07 2005-12-07 Herramienta abrasiva.
PT05111767T PT1797995E (pt) 2005-12-07 2005-12-07 Ferramenta de abrasão
AT05111767T ATE425843T1 (de) 2005-12-07 2005-12-07 Schleifwerkzeug
DE502005006896T DE502005006896D1 (de) 2005-12-07 2005-12-07 Schleifwerkzeug
DE502006008321T DE502006008321D1 (de) 2005-12-07 2006-09-12 Schleifwerkzeug
AT06120537T ATE488327T1 (de) 2005-12-07 2006-09-12 Schleifwerkzeug
EP10181613A EP2305426A1 (de) 2005-12-07 2006-09-12 Schleifwerkzeug
EP06120537A EP1795303B1 (de) 2005-12-07 2006-09-12 Schleifwerkzeug
US11/567,789 US20070128989A1 (en) 2005-12-07 2006-12-07 Novel Grinding Tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05111767A EP1797995B1 (de) 2005-12-07 2005-12-07 Schleifwerkzeug

Publications (2)

Publication Number Publication Date
EP1797995A1 EP1797995A1 (de) 2007-06-20
EP1797995B1 true EP1797995B1 (de) 2009-03-18

Family

ID=36095668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05111767A Revoked EP1797995B1 (de) 2005-12-07 2005-12-07 Schleifwerkzeug

Country Status (6)

Country Link
EP (1) EP1797995B1 (pl)
AT (2) ATE425843T1 (pl)
DE (2) DE502005006896D1 (pl)
ES (1) ES2322163T3 (pl)
PL (1) PL1797995T3 (pl)
PT (1) PT1797995E (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110712142A (zh) * 2019-09-27 2020-01-21 台山市远鹏研磨科技有限公司 一种金刚石抛光研磨砂纸

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724502B1 (en) * 1993-10-19 2001-04-11 Minnesota Mining And Manufacturing Company Abrasive articles comprising a make coat transferred by lamination
DE9407622U1 (de) * 1994-05-06 1994-08-04 Jöst, Peter, 69518 Abtsteinach Schleifkörper mit einer Kontaktfläche zur Adaption mit einem Werkzeug
US20020090901A1 (en) * 2000-11-03 2002-07-11 3M Innovative Properties Company Flexible abrasive product and method of making and using the same
US6613113B2 (en) * 2001-12-28 2003-09-02 3M Innovative Properties Company Abrasive product and method of making the same
US7044989B2 (en) * 2002-07-26 2006-05-16 3M Innovative Properties Company Abrasive product, method of making and using the same, and apparatus for making the same

Also Published As

Publication number Publication date
ATE488327T1 (de) 2010-12-15
DE502005006896D1 (de) 2009-04-30
EP1797995A1 (de) 2007-06-20
PT1797995E (pt) 2009-05-06
DE502006008321D1 (de) 2010-12-30
ES2322163T3 (es) 2009-06-17
PL1797995T3 (pl) 2009-08-31
ATE425843T1 (de) 2009-04-15

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