EP3496897A1 - Meule de dégrossissage comprenant une couche de support - Google Patents

Meule de dégrossissage comprenant une couche de support

Info

Publication number
EP3496897A1
EP3496897A1 EP17733362.2A EP17733362A EP3496897A1 EP 3496897 A1 EP3496897 A1 EP 3496897A1 EP 17733362 A EP17733362 A EP 17733362A EP 3496897 A1 EP3496897 A1 EP 3496897A1
Authority
EP
European Patent Office
Prior art keywords
roughing
tool
layer
mineral additive
disc 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.)
Withdrawn
Application number
EP17733362.2A
Other languages
German (de)
English (en)
Inventor
Thomas Kamps
Bernd Conradi
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.)
Klingspor AG
Original Assignee
Klingspor 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
Application filed by Klingspor AG filed Critical Klingspor AG
Publication of EP3496897A1 publication Critical patent/EP3496897A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/11—Lapping tools
    • B24B37/20—Lapping pads for working plane surfaces
    • B24B37/22—Lapping pads for working plane surfaces characterised by a multi-layered structure
    • 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
    • B24D11/02—Backings, e.g. foils, webs, mesh fabrics
    • 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
    • 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
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—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 bonding agent
    • B24D3/20—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 bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • 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
    • B24D7/02—Wheels in one piece
    • B24D7/04—Wheels in one piece with reinforcing means

Definitions

  • the invention relates to a roughing disc.
  • Such a roughing disc is known in practice and is suitable for the rough grinding of material surfaces of various materials, i. for surface removal of material. It comprises a disk-shaped main body with a tool side turned tool side and a workpiece zuwendbaren workpiece side.
  • the main body comprises a centered through a rotary axis central recess for direct or indirect connection of a drive shaft of a tool.
  • the main body also comprises a disk-shaped carrier layer arranged on the tool side, at least one abrasive layer and a separating layer between adjacent layers.
  • Previously known roughing discs consist of several abrasive layer layers, which comprise a mixture of phenolic resin and abrasive grains, wherein the mixture may be mixed with various fillers and additives. It is also known that the layers are separated from one another by means of separating layers, so that the grinding layers and separating layers are arranged alternately along the axis of rotation.
  • grinding discs which layers of different
  • the invention has for its object to provide a roughing disc of the aforementioned type, which is characterized by an improved structure and in particular has an improved bond between adjacent layers of different materials and improved strength and / or rigidity.
  • the roughing disc according to the invention comprises a disk-shaped basic body with a tool side which can be turned over a tool and a workpiece side which can be turned towards a workpiece.
  • the main body comprises a center recess, through which a rotation axis passes, for direct or indirect connection of a drive shaft of the tool, a disc-shaped carrier layer arranged on the tool side, at least one grinding layer and a separating layer between adjacent layers. Adjacent layers in this sense are adjacent abrasive layers in an array of multiple abrasive layers and an abrasive layer and a support layer adjacent thereto.
  • the roughing disc according to the invention is characterized in particular by the fact that the carrier layer is formed from a mixture of materials which is free of abrasive additives and which comprises at least one mineral additive.
  • the carrier layer is free of abrasive additives and fulfills an exclusively supporting function.
  • the mineral additive may be basalt, quartz sand, wollastonite, aluminum silicate and / or kaolin.
  • the mixture of the at least one carrier layer may also comprise different additives from this group.
  • the mineral additive may have a hardness of at least 2, preferably between 7 and 9. In particular, a high strength of the roughing disc can be ensured, the greater the hardness of the additive.
  • the mineral additive has a particle size of 30 to 1000 ⁇ m, preferably 200 to 500 ⁇ m.
  • the grain of the mineral additive is coated with phenolic resin systems comprising resol / novolak mixture.
  • Resoles are fusible, soluble phenolic resins that contain reactive methylol groups and are formed in the condensation of phenols with formaldehyde under basic conditions. The benzene rings are connected to each other via methylene groups and via ether bridges.
  • Novolaks are phenolic resins with a formaldehyde-phenol ratio of less than 1: 1, which are obtained by acid condensation of the starting materials.
  • the resol has a viscosity of 1000 to 5000 mPas, preferably 1200 to 3500 mPas.
  • the novolak has a content of hexamethylenetetramine of at least 9% by volume, preferably 12 to 16% by volume and a flow distance of 15 to 35 mm, preferably 17 to 26 mm.
  • the novolac may also be modified novolac.
  • additional defined amounts of other additives and / or additives of less than 20% by volume may be added to the novolak.
  • FIGURE of the drawing shows a section through a roughing disc according to the invention.
  • the roughing disc 1 shown in the drawing has a disk-shaped base body 3 with a layer-like structure and an outer radius a.
  • the main body 3 has a tool side 13 which can be turned over a tool and a workpiece side 12 which can be turned over to a workpiece.
  • the main body 3 comprises a central recess 2, which is penetrated by an axis of rotation 5.
  • the axis of rotation S is located in the center of rotation of the roughing disc 1.
  • an insert 4 for fixing the roughing disc 1 is arranged on a drive shaft of a tool.
  • a carrier layer 6 is arranged at the tool facing tool side 13 of the roughing disc.
  • the carrier layer 6 comprises a mixture which mixture of abrasive additives is free and which comprises at least one mineral additive.
  • the mineral additive may be basalt, quartz sand, wollastonite, aluminum silicate and / or kaolin.
  • the mixture of the at least one carrier layer may also comprise different additives from this group.
  • the additive may also have a Mohs hardness of at least 2, preferably between 7 and 9.
  • the grain size of the additive may be between 30 and 1000 .mu.m, preferably between 200 and 500 .mu.m.
  • the granules of the additive may be coated with phenolic resin systems wherein the phenolic resin system may comprise a ResoWNovolak mixture.
  • the resol may have a viscosity of 1000 to 5000 mPa ⁇ s, preferably 1200 to 3500 mPa ⁇ s. sen.
  • the novolak may have a content of hexamethylenetetramine of at least 9% by volume, preferably 12 to 16% by volume and a flow distance of 15 to 35 mm, preferably 17 to 26 mm.
  • the novolak may comprise additional defined amounts of other additives and / or additives of less than 20% by volume.
  • the carrier layer 6 has a high strength. It may also include a net-like insert to further increase the stability of the roughing disc 1.
  • the roughing disc 1 also has two stacked in the direction of the axis 5 grinding layers 8a, 8b, which are arranged on the workpiece side 12.
  • the abrasive layers 8a, 8b may have abrasive grains such as normal brown fused aluminum and derivatives, blue aluminum alumina, white fused alumina, zirconia alumina, silicon carbide, kerarnikkom (ceramic grain), pink fused alumina, and / or monocrystalline alumina.
  • the abrasive layers may include supporting fillers, such as polyaluminum fluoride, cryolite, pyrite, calcite, wollastonite, and / or graphite, which may be bonded with phenolic resin systems. Thus, a phenolic resin powder mixture is formed, which may be mixed with various fillers and additives.
  • a release layer is arranged, which is designed as a glass fabric layer 10.
  • a further glass fabric layer 10 is arranged between the carrier layer 6 and the abrasive layer 8a adjoining the carrier layer 6.
  • the glass fabric layers 10 act as separating layers and serve the strength of the roughing disc 1.
  • the glass fabric layers 10 extend from an outer edge 15 of the roughing disc 1 to the central recess 2 or encircle the central recess 2 annularly.
  • the central recess 2 is designed as a recessed hub.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

L'invention concerne une meule de dégrossissage pour l'usinage de surfaces de matériau. La meule de dégrossissage comprend un corps de base (3) en forme de disque pourvue d'une face outil (13) pouvant être tournée vers un outil et d'une face pièce (12) pouvant être tournée vers une pièce. Le corps de base (3) comporte un évidement (2) central traversé par un axe de rotation (5) pour le raccordement direct ou indirect d'un arbre d'entraînement de l'outil, une couche de support (6) en forme de disque agencée sur le côté outil (13), au moins une couche de dégrossissage (8a, 8b) et une couche de séparation entre les couches voisines. La couche de support (6) est formée d'un mélange de matériau, lequel est exempt d'additifs abrasifs et lequel comporte au moins un additif minéral.
EP17733362.2A 2016-08-10 2017-05-31 Meule de dégrossissage comprenant une couche de support Withdrawn EP3496897A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016114851 2016-08-10
PCT/EP2017/063090 WO2018028849A1 (fr) 2016-08-10 2017-05-31 Meule de dégrossissage comprenant une couche de support

Publications (1)

Publication Number Publication Date
EP3496897A1 true EP3496897A1 (fr) 2019-06-19

Family

ID=59227693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17733362.2A Withdrawn EP3496897A1 (fr) 2016-08-10 2017-05-31 Meule de dégrossissage comprenant une couche de support

Country Status (12)

Country Link
US (1) US20210323113A1 (fr)
EP (1) EP3496897A1 (fr)
JP (1) JP2019524464A (fr)
KR (1) KR20190035767A (fr)
CN (1) CN109890562B (fr)
AU (1) AU2017311190A1 (fr)
BR (1) BR112019002336A2 (fr)
CA (1) CA3033406A1 (fr)
RU (1) RU2766921C2 (fr)
SG (2) SG10202101268QA (fr)
WO (1) WO2018028849A1 (fr)
ZA (1) ZA201900649B (fr)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62199363A (ja) * 1986-02-24 1987-09-03 Daiwa Kasei Kogyo Kk オフセツト型弾性砥石
US5273558A (en) * 1991-08-30 1993-12-28 Minnesota Mining And Manufacturing Company Abrasive composition and articles incorporating same
US5571317A (en) * 1993-07-30 1996-11-05 Western Atlas Inc. Fiber-reinforced magnesium oxychloride bond
DE9412557U1 (de) * 1994-08-04 1994-11-10 Falk, Klaus-R., 48163 Münster Schleifkörper
US5582625A (en) * 1995-06-01 1996-12-10 Norton Company Curl-resistant coated abrasives
US6465076B2 (en) * 1998-09-15 2002-10-15 3M Innovative Properties Company Abrasive article with seamless backing
KR100465649B1 (ko) * 2002-09-17 2005-01-13 한국포리올 주식회사 일체형 연마 패드 및 그 제조 방법
FR2898070B1 (fr) * 2006-03-06 2009-01-09 Saint Gobain Abrasifs Tech Meule d'ebarbage fine, utilisation de cette meule, procede et dispositif pour la fabriquer
US8038750B2 (en) * 2007-07-13 2011-10-18 3M Innovative Properties Company Structured abrasive with overlayer, and method of making and using the same
US20130295827A1 (en) * 2011-01-22 2013-11-07 Johannes Tack Grinding body
JP5893479B2 (ja) * 2011-04-21 2016-03-23 東洋ゴム工業株式会社 積層研磨パッド
JP5858576B2 (ja) * 2011-04-21 2016-02-10 東洋ゴム工業株式会社 積層研磨パッド用ホットメルト接着剤シート、及び積層研磨パッド用接着剤層付き支持層
CN104125876B (zh) * 2011-12-31 2018-07-20 圣戈班磨料磨具有限公司 具有开口的不均匀分布的研磨制品
EP4159371A1 (fr) * 2013-06-28 2023-04-05 Saint-Gobain Abrasives, Inc. Article abrasif

Also Published As

Publication number Publication date
CA3033406A1 (fr) 2018-02-15
CN109890562A (zh) 2019-06-14
CN109890562B (zh) 2021-09-28
SG11201901044QA (en) 2019-03-28
SG10202101268QA (en) 2021-03-30
AU2017311190A1 (en) 2019-02-21
RU2766921C2 (ru) 2022-03-16
WO2018028849A1 (fr) 2018-02-15
ZA201900649B (en) 2020-06-24
KR20190035767A (ko) 2019-04-03
RU2019106513A3 (fr) 2020-09-17
RU2019106513A (ru) 2020-09-17
US20210323113A1 (en) 2021-10-21
JP2019524464A (ja) 2019-09-05
BR112019002336A2 (pt) 2019-06-18

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