EP0769352B1 - Disque abrasif feuilleté - Google Patents

Disque abrasif feuilleté Download PDF

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Publication number
EP0769352B1
EP0769352B1 EP96890165A EP96890165A EP0769352B1 EP 0769352 B1 EP0769352 B1 EP 0769352B1 EP 96890165 A EP96890165 A EP 96890165A EP 96890165 A EP96890165 A EP 96890165A EP 0769352 B1 EP0769352 B1 EP 0769352B1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
recesses
laminated
wheel according
grinding
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.)
Expired - Lifetime
Application number
EP96890165A
Other languages
German (de)
English (en)
Other versions
EP0769352A1 (fr
Inventor
Josef Kofler
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.)
3M Schweiz GmbH
Original Assignee
Rappold International Sales 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 Rappold International Sales AG filed Critical Rappold International Sales AG
Publication of EP0769352A1 publication Critical patent/EP0769352A1/fr
Application granted granted Critical
Publication of EP0769352B1 publication Critical patent/EP0769352B1/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
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels

Definitions

  • the invention relates to a composite grinding wheel with a central, if necessary corrugated or cranked disc core with marginal recesses for Anchoring a peripheral grinding ring.
  • This grinding ring has one or more fabric inlays.
  • Such a compound grinding wheel is from US-A 3793783 known.
  • the composite grinding wheel according to the invention is the one mentioned at the beginning Type mainly characterized by that through the fabric insert (s) extending connector to Connect the fabric insert (s) with the one in the recesses Abrasive ring material are provided.
  • the fabric inserts can be joined together with one or more threads needled, i.e. sewn, or e.g. Impression bodies are provided, the outer Shape preferably corresponds to the profile of the recesses and the at least one Fabric insert as well as the abrasive ring material located in the recesses push through.
  • Such indenters are e.g. in the form of a nail board, so as Disk with pins.
  • the composite grinding wheel according to the invention is produced in the usual way In such a way that in a press mold first half of the grinding ring as a ring piled up, then the disc core is placed, the recesses of the Disc core to be filled with abrasive ring material, and then the second half of the grinding ring is piled up. Then the needles are needled in the green state or the indenters are pressed in, the mold is closed and the Sintered grinding ring under pressure and temperature.
  • the composite grinding wheels according to the invention are as recyclable wheels designed in which the disc core can be used again and again. To do this, the Grinding ring remainder ground away on one side, the one in the recesses Material pushed out hydraulically and material residues on the other side removed.
  • FIG. 1 is a partial section through a Compound grinding wheel with round wheel core
  • Fig. 2 corresponding partial sections two variants
  • Fig. 3 is a detailed front view of the edge area of the disc core 4 a plan view according to FIG. 3
  • FIG. 5 a Detail frontal view of the edge area of the disc core towards the center of the disc of a variant according to FIGS. 3 and 6 is a top view according to FIG. 5.
  • FIG. 1 shows a composite grinding wheel with a steel core with offset 2 and central hub 3 and a grinding ring 4, which is resin-bonded in the usual way Contains abrasive grain and has a central fabric insert 5, which is in the range of marginal recesses 7 (see Fig. 4) of the disc core 1 at 6 by the Sanding ring 4 is sewn through.
  • Fig. 2 shows variants with two fabric inserts and one to the disk periphery increasing thickness of the grinding ring.
  • 5 and 6 show an alternative way of anchoring without sewing.
  • an indentation body 8 in the form of a disk provided with pins provided that corresponds to the shape of the recess 7 and from one side is used so that the pins by at least one, preferably both Fabric inlays 5 and the green abrasive material in between in the Pass the recess 7 and the bottom plate of the indentation body 8 on one of the tissue inserts.
  • the disc core is preferably made of steel or a special alloy or made of high-strength plastic. In terms of reusability is metals and To give plastics preference over ceramic disc cores that are usually more susceptible to breakage when subjected to impact.
  • the disk core contour is usually round - except for the recesses - but can also be general Have polygonal shape.
  • the abrasive ring is usually resin bound, the most common formaldehyde resin bound - however, other resins such as polyester, Polyimides, polyurethanes, epoxies, rubber resins (e.g. SBR, SBN) and hybrid resins be used.
  • As fillers are glass, carbon, kevlar and other threads, Metal whiskers and wires are known, and as abrasive material, corundum, spinels, and zircon Sintered corundum, carbides, nitrides such as cubic boron nitride and the like, as well as after Ceramic powder produced using the sol / gel method.
  • the disk core consists of metal
  • it is particularly advantageous Pretreat the wheel core in the application area of the grinding ring with a primer, which serves as an adhesion promoter to ensure the surface adhesion between the disc core and Increase grinding wheel in that when sintering the grinding ring Scorching occurs, e.g. also the fabric inserts.
  • a primer which serves as an adhesion promoter to ensure the surface adhesion between the disc core and Increase grinding wheel in that when sintering the grinding ring Scorching occurs, e.g. also the fabric inserts.
  • the disc core at least degreased in the contact area, preferably stripped or sanded, before the primer is applied.
  • the primer is preferably based on phenolic resin (high molecular weight) with a metal oxide component and an organosilicate component and is suitable especially for steel surfaces.
  • Phenol / formaldehyde resins are particularly suitable as phenolic resins for the primer Flow ranges from 20 to 100 mm, especially with hexamethylene tetramine content (4 to 12%).
  • the phenol / formaldehyde resins can also be modified, e.g. epoxy, be phthalate, styrene, rubber or sulfur modified. Also amide and Imide resins, as well as combinations with ABS, polystyrene and polyester are suitable.
  • Heavy metal oxides are particularly suitable as metal oxides, in particular from Iron group and / or rare earth group.
  • the primer can also contain finely divided fillers, such as silicates, carbonates, chlorides, eutectic salt mixtures, clays or sintered materials, also metal sulfides all of divalent and trivalent metals.
  • finely divided fillers such as silicates, carbonates, chlorides, eutectic salt mixtures, clays or sintered materials, also metal sulfides all of divalent and trivalent metals.
  • the primer is applied in a conventional manner to the degreased metal surface, e.g. brushed on or sprayed on as a slurry in a solvent.

Landscapes

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

Claims (7)

  1. Disque abrasif feuilleté ayant un centre de disque, le cas échéant ondulé ou contrecoudé, avec des creux marginaux, dans lesquels une couronne abrasive (4) périphérique est ancrée, qui a une couche de tissu (5) au moins d'un coté du centre (1) de disque, préférable des deux côtés, caractérisé en ce qu'un raccord (6, 8) s'étendant à travers la/les couche(s) de tissu est prévu pour relier la/les couche(s) de tissu avec le matériel de la couronne abrasive (4) dans les creux (7).
  2. Disque abrasif feuilleté selon la revendication 1, caractérisé en ce que les couches de tissu (5) sont cousues l'une avec l'autre.
  3. Disque abrasif feuilleté selon la revendication 1, caractérisé en ce que des corps à enfoncer traversant la/les couche(s) de tissu (5) en forme de peigne sont prévus comme raccords, dont les saillies s'étendant dans les creux (7) préférablement correspondent au profil intérieur des creux.
  4. Disque abrasif feuilleté selon la revendication 3, caractérisé en ce que les raccords ont la forme de disques avec des chevilles saillantes.
  5. Disque abrasif feuilleté selon l'une des revendications 1 à 3, caractérisé en ce que le centre (1) de disque est fait en métal, en particulier en acier.
  6. Disque abrasif feuilleté selon la revendication 5, caractérisé en ce que le centre (1) de disque est pourvu d'un agent adhésif pour la couronne abrasive (4).
  7. Disque abrasive feuilleté selon la revendication 6, caractérisé en ce que l'agent adhésif est un agent adhésif à base d'une résine synthétique, le cas échéant modifiée, en particulier à base de phénol/formaldéhyde, qui contient, le cas échéant, des matières auxiliaires, comme des oxydes, des sulfure et/ou des matières de charge.
EP96890165A 1995-10-18 1996-10-17 Disque abrasif feuilleté Expired - Lifetime EP0769352B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT56695U 1995-10-18
AT566/95U 1995-10-18
AT0056695U AT1003U1 (de) 1995-10-18 1995-10-18 Verbundschleifscheibe

Publications (2)

Publication Number Publication Date
EP0769352A1 EP0769352A1 (fr) 1997-04-23
EP0769352B1 true EP0769352B1 (fr) 1999-12-15

Family

ID=3494010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96890165A Expired - Lifetime EP0769352B1 (fr) 1995-10-18 1996-10-17 Disque abrasif feuilleté

Country Status (3)

Country Link
EP (1) EP0769352B1 (fr)
AT (2) AT1003U1 (fr)
DE (1) DE59603917D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101043978B (zh) * 2004-10-19 2010-10-27 格哈特·吉辛 包括双芯夹紧装置的切割轮

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE219410T1 (de) * 1997-10-16 2002-07-15 Rueggeberg August Gmbh & Co Schleifscheibe
DE102009056440A1 (de) * 2009-12-02 2011-06-09 Rhodius Schleifwerkzeuge Gmbh & Co. Kg System zum Trennen von Gegenständen
AT509371B1 (de) 2010-01-20 2013-01-15 Rappold Winterthur Technologie Gmbh Verbundschleifsystem
AT509372B1 (de) 2010-02-10 2013-01-15 Rappold Winterthur Technologie Gmbh Verbundschleifsystem

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989074A (en) * 1931-07-23 1935-01-29 George H Bullard Abrasive wheel
DE606001C (de) 1932-07-19 1934-11-23 Emil Motl Schneid- und Schleifscheibe mit einem scheibenfoermigen Traeger aus Metall
US2092591A (en) * 1935-08-17 1937-09-07 Norton Co Grinding wheel
US2694886A (en) * 1952-07-12 1954-11-23 Allison Company Abrasive cutting wheel
CH501468A (de) * 1968-11-19 1971-01-15 Esterol Ag Verbundelement für Schleifkörper
US3793783A (en) * 1972-10-02 1974-02-26 Norton Co Segmental cut-off grinding wheel
JPH0673817B2 (ja) * 1989-03-10 1994-09-21 三和ダイヤモンド工業株式会社 カッター

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101043978B (zh) * 2004-10-19 2010-10-27 格哈特·吉辛 包括双芯夹紧装置的切割轮

Also Published As

Publication number Publication date
AT1003U1 (de) 1996-09-25
DE59603917D1 (de) 2000-01-20
EP0769352A1 (fr) 1997-04-23
ATE187669T1 (de) 2000-01-15

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