EP0770457B1 - Meule - Google Patents

Meule Download PDF

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Publication number
EP0770457B1
EP0770457B1 EP19950116805 EP95116805A EP0770457B1 EP 0770457 B1 EP0770457 B1 EP 0770457B1 EP 19950116805 EP19950116805 EP 19950116805 EP 95116805 A EP95116805 A EP 95116805A EP 0770457 B1 EP0770457 B1 EP 0770457B1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
projections
grinding
coating film
abrasive grains
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
EP19950116805
Other languages
German (de)
English (en)
Other versions
EP0770457A1 (fr
Inventor
Kenji c/o Osaka Diamond Ind. Co. Fukushima
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.)
Osaka Diamond Industrial Co Ltd
Original Assignee
Osaka Diamond Industrial Co Ltd
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 Osaka Diamond Industrial Co Ltd filed Critical Osaka Diamond Industrial Co Ltd
Priority to DE1995619800 priority Critical patent/DE69519800T2/de
Priority to EP19950116805 priority patent/EP0770457B1/fr
Publication of EP0770457A1 publication Critical patent/EP0770457A1/fr
Application granted granted Critical
Publication of EP0770457B1 publication Critical patent/EP0770457B1/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
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
    • B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0018—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by electrolytic deposition
    • 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

Definitions

  • the present invention relates to a grinding wheel, and more particularly, it relates to a grinding wheel, employed for grinding various materials such as a plastic material, a glass material and a ceramics material, comprising super abrasive grains of diamond or CBN (cubic boron nitride) which are fixed to its grinding face.
  • a grinding wheel employed for grinding various materials such as a plastic material, a glass material and a ceramics material, comprising super abrasive grains of diamond or CBN (cubic boron nitride) which are fixed to its grinding face.
  • an electrodeposition grinding wheel which has a higher degree of concentration of abrasive grains on a grinding face as compared with a grinding wheel comprising abrasive grains which are fixed to a portion, forming a grinding face, of a metal base serving as a base material by a resinoid, metal or vitrified bond material.
  • the electrodeposition grinding wheel has excellent sharpness, due to a large amount of protrusion of abrasive grains concerning its grinding. With abrasion of the abrasive grains following progress of the grinding, however, dischargeability of chips is so deteriorated that clearances between the abrasive grains are clogged up with the chips and the chips are deposited onto the grinding face.
  • Japanese Utility Model Laying-Open No. 57-3561 (1982) proposes a rotary grinding wheel which is provided with a plurality of clearance grooves obliquely extending along its outer peripheral grinding face.
  • a plastic lens for example, is ground by the grinding wheel which is proposed in the aforementioned gazette, however, sharpness of the grinding wheel is extremely reduced due to viscosity which is specific to the material of the workpiece. Thus, the aforementioned problem cannot be solved by this grinding wheel.
  • An object of the present invention is to provide a grinding wheel which can solve such a problem that clearances between abrasive grains are clogged up with chips, with a grinding face which is substantially free from deposition of chips.
  • the present invention provides a grinding wheel having a grinding face being provided with a number of projections being formed on a portion of a base material forming said grinding face, said projections being homogeneously distributed at substantially uniform heights, and abrasive grains having grain sizes being smaller than said heights of said projections, being fixed to the surfaces of said projections, wherein said abrasive grains are fixed to said grinding face of the base material through an electrodeposited layer, a coating film chips for preventing deposition of said coating film being formed to at least partially cover the outer surface of said grinding face and including the surfaces of said abrasive grains, wherein said coating film includes fluororesin.
  • the aforementioned projections are preferably formed by pyramidal projections. More preferably, respective top portions of those of the pyramidal projections which are adjacent to each other along the rotational direction of the grinding wheel are arranged to be displaced from each other perpendicularly to the rotational direction of the grinding wheel.
  • the aforementioned projections are preferably formed by truncated-pyramidal projections. More preferably, respective top faces of those of the truncated-pyramidal projections which are adjacent to each other along the rotational direction of the grinding wheel are arranged to be displaced from each other perpendicularly to the rotational direction of the grinding wheel.
  • the abrasive grains are fixed to the surfaces of the projections by electrodeposition. Further, the abrasive grains are fixed to the surfaces of the projections through nickel layer.
  • resin containing polytetrafluoroethylene is employed as the fluororesin forming the coating film.
  • a filler of diamond, metal oxide, metal, SiC, glass, graphite, molybdenum disulfide or mica may be mixed into the coating film.
  • the filler is preferably mixed into the coating film in the form of particles, powder, fiber or whisker.
  • a mixture of fluororesin and silicon resin and optionally another resin such as polyamide, polyimide, polystyrene, epoxy, polyester, polyurethane or polyphenylene sulfide resin, for example, may be employed as the material for the coating film.
  • a number of projections are formed on the portion of the base material forming the grinding face to be homogeneously distributed at substantially uniform heights similarly to knurled surfaces, for example.
  • the abrasive grains are fixed to the surfaces of the projections, i.e., crests and troughs of the projections, by a bond material. Therefore, those of the abrasive grains which are fixed to the crests of the projections directly concern the grinding, while the trough portions of the projections serve as chip pockets. Chips fall in the trough portions.
  • the grinding wheel according to the present invention is provided with the coating film for preventing deposition of the workpiece, to at least partially cover the outer surface of the grinding face including the surfaces of the abrasive grains.
  • the abrasive grains which are fixed onto the surfaces of the crests of the projections directly concern the grinding. Portions of the coating film covering the surfaces of the abrasive grains are abraded and separated, with progress of the grinding. On the other hand, portions of the coating film covering the abrasive grains which are fixed to the surfaces of the troughs of the projections remain as such with those covering the bond material, regardless of progress of the grinding.
  • the grinding progresses in such a state that these portions of the coating film remain on the trough portions of the projections, whereby the chips falling in the trough portions serving as chip pockets are discharged following rotation of the grinding wheel, without coming into direct contact with the abrasive grains and the bond material, with no adhesion to portions around the chip pockets. If no coating film is provided, the chips falling in the trough portions of the projections serving as chip pockets are pressed against the surfaces of the abrasive grains and the bond material to adhere to the same. Thus, the clearances between the abrasive grains are clogged up with the chips to deteriorate sharpness of the grinding wheel, and the chips are finally deposited onto the grinding face.
  • the material for the coating film for preventing deposition of the workpiece is prepared from fluororesin, preferably from fluororesin containing polytetrafluoroethylene (PTFE) which is called “Teflon” (trade name: by Du Pont Co., Ltd.).
  • fluororesin preferably from fluororesin containing polytetrafluoroethylene (PTFE) which is called “Teflon” (trade name: by Du Pont Co., Ltd.).
  • PTFE polytetrafluoroethylene
  • Teflon polytetrafluoroethylene
  • silicon resin is further employed as the material for the coating film for preventing deposition of the workpiece.
  • the silicon resin which has extremely strong water repellency and low adhesion with other materials, can be employed as the material for the coating film together with the aforementioned fluororesin.
  • Both of these resin materials may conceivably be employed as the materials for the coating film, depending on the position of formation and the shape of the coating film.
  • the projections are formed by pyramidal or truncated-pyramidal projections.
  • a homogeneous irregularity pattern is formed on the grinding face through the projections of such shapes, so that a number of clearances are defined in the grinding face to serve as chip pockets.
  • Only the abrasive grains provided around the top portions or top faces of the pyramidal or truncated-pyramidal projections concern the grinding, whereby the clearances between the abrasive grains are not clogged up with chips.
  • the respective top portions or top faces of the pyramidal or truncated-pyramidal projections which are adjacent to each other along the rotational direction of the grinding wheel are arranged to be displaced from each other perpendicularly to the rotational direction of the grinding wheel.
  • the respective pyramidal or truncated-pyramidal projections bite into the working surface at fine pitches, whereby an accurate machined surface can be obtained.
  • a portion 2 defining a grinding face of an electrodeposition grinding wheel is provided on the outer peripheral edge portion of a metal base 1 which consists of a steel disc of 150 mm in diameter, 50 mm in axial hole diameter and 10 mm in thickness.
  • the portion 2 defining a grinding face is provided with a number of inclined grooves, i.e., trough lines 3 and 4 which extend inclinedly with respect to the circumferential direction at constant pitches from both side surfaces of the metal base 1.
  • Pyramidal projections 50 are formed in quadrilateral regions which are defined by the trough lines 3 and 4 intersecting with each other.
  • ridge lines 6 and 7 extend from the intersections between the trough lines 3 and 4.
  • the pyramidal projections 50 have top portions 5 in the regions enclosed with the trough lines 3 and 4. These top portions 5 are formed at intersections between the ridge lines 6 and 7 in the regions which are enclosed with the trough lines 3 and 4.
  • top portions 5a, 5b, 5c and 5d the respective top portions 5 of those of the pyramidal projections 50 which are adjacent to each other along the rotational direction Q of the grinding wheel are arranged to be displaced from each other little by little perpendicularly to the rotational direction Q.
  • the trough lines 3 or 4 are inclined with respect to the circumferential direction, i.e., the rotational direction Q, to obliquely extend at constant pitches P.
  • the trough lines 3 are formed to be at an angle A with respect to the axis of rotation.
  • the trough lines 4 are formed to be at an angle B with respect to the axis of rotation.
  • the angles A and B are set in ranges of 0° to 45° and ⁇ 10° about 45° respectively, to be different from each other (A ⁇ B).
  • top portions 5 of the pyramidal projections 50 which are formed in the regions enclosed with the trough lines 3 and 4 are displaced from each other little by little perpendicularly to the circumferential direction of the grinding wheel, i.e., the rotational direction Q of the grinding wheel, along the axis of rotation.
  • a number of super abrasive grains 8 consisting of artificial diamond or cubic boron nitride are fixed to the surface of each pyramidal projection 50 by a bond material 9 consisting of a nickel layer.
  • the number of super abrasive grains 8 are fixed to the surface of each projection 50 by electrodeposition.
  • the super abrasive grains 8 have grain sizes which are smaller than the pyramidal projections 50, and are homogeneously distributed along the overall grinding face 2 in a single-layer manner, to define a surface concerning grinding.
  • a coating film 10 of fluororesin is formed by coating the outer surfaces of the super abrasive grains 8 and the bond material 9 with Teflon (trade name: by Du Pont Co., Ltd.).
  • Teflon trade name: by Du Pont Co., Ltd.
  • This coating film 10 is formed by applying Teflon, heating the same at a temperature of about 300°C to 400°C for several 10 minutes, and thereafter cooling the same. Such application and heating may be repeated.
  • the thickness of the coating film 10 is preferably within the range of 5 to 30 ⁇ m.
  • the grain sizes of the super abrasive grains 8 are preferably within the range of 30 to 120 in U.S. mesh size (100 to 700 ⁇ m in grain size).
  • a number of clearances 60 are homogeneously defined in the overall grinding face 2 by the trough lines 3 and 4 and the ridge lines 6 and 7, to serve as chip pockets.
  • chips are discharged through the clearances 60, and clearances between the super abrasive grains 8 are prevented from being clogged up with the chips.
  • the grinding face 2 is provided with the projections 50, whereby the distance L between each adjacent pair of super abrasive grains 8 directly concerning grinding is larger than that in a planar grinding face.
  • the grinding wheel bites into a workpiece in an excellent state with improved sharpness.
  • the positions of the top portions 5 of the pyramidal projections 50 are displaced from each other little by little with respect to the rotational direction Q of the grinding wheel so that rotation loci of the pyramidal projections 50 differ from each other, whereby a working surface of the workpiece is ground by the surfaces of the projections 50 at fine pitches.
  • an accurate machined surface can be obtained with small irregularity. If all pyramidal projections 50 are on the same rotation locus, on the other hand, the working surface of the workpiece is repeatedly scooped out by the projections 50 and hence deep stripes are formed to deteriorate accuracy of the machined surface.
  • a grinding wheel according to another embodiment of the present invention may be provided with truncated-pyramidal projections 50.
  • top faces 51 are formed on intersections between ridge lines 6 and 7. Structures and shapes of other portions of the grinding wheel according to this embodiment are similar to those shown in Figs. 2 and 3, and hence redundant description is omitted.
  • portions of the coating film 10 covering the top portions 5 or the top faces 51 of the projections 50 are abraded and separated to expose the surfaces of the super abrasive grains 8.
  • the super abrasive grains 8 which are positioned on the top portions 5 or the top faces 51 directly concern grinding, while trough portions which are covered with the coating film 10 are adapted to discharge chips.
  • the super abrasive grains 8 which are positioned on the top portions 5 or the top faces 51 are abraded and dropped, while the top portions 5 of the projections 50 are also abraded to define planes, as shown in Fig. 6.
  • the super abrasive grains 8 which are positioned on the trough portions are successively exposed to concern the grinding.
  • Trough lines 3 and 4 were formed on the outer peripheral edge portion of a discoidal metal base 1 of 150 mm in outer diameter and 10 mm in width, which was made of S25C, as inclined grooves which were inclined with respect to the circumferential direction at pitches P of 1.5 mm from both side surfaces.
  • Pyramidal projections 50 each having a base of 0.8 mm were formed in regions which were enclosed with these trough lines 3 and 4.
  • the angles A and B of inclination shown in Fig. 2 were set at 11° and 49° respectively.
  • the metal base 1 which was formed in the aforementioned manner was subjected to electrolytic degreasing and hydrochloric acid treatment as pretreatment for plating. Thereafter the metal base 1 was introduced into a nickel electroplating tank 100 containing diamond abrasive grains 80 shown in Fig. 7, and subjected to nickel electrodeposition. In this electrodeposition, the metal base 1 was rotated along arrow R, and the diamond abrasive grains 80 were stirred by a pump 11 and precipitated on the metal base 1, to adhere to its outer peripheral surface. The grain sizes of the diamond abrasive grains 80 were #80/100 in U.S. mesh size.
  • the thickness of the bond material 9 which was formed on the grinding face 2 as a plating layer was set at about 60 % of the grain sizes of the abrasive grains 8. Referring to Fig. 7, a nickel plate 12 and an electric heater 13 were arranged in the plating tank 100.
  • the electrodeposition grinding wheel obtained in the aforementioned manner was heated at a temperature of 380°C for 40 minutes, to be degreased. Thereafter the grinding wheel was sandblasted, and then air was sprayed to this grinding wheel to wash the outer surface.
  • a coating film of 5 ⁇ m in thickness was formed on the grinding face 2 of the electrodeposition grinding wheel which was pretreated in the aforementioned manner by primer coating with fluororesin through an air spray. Thereafter the grinding wheel was dried at a temperature of 100 to 120°C for 15 minutes. The grinding wheel was cooled in the air, and thereafter another coating film of 20 ⁇ m in thickness was formed on the grinding face 2 of the grinding wheel by enamel coating with fluororesin through an air spray.
  • the coating film was fired at a temperature of 380°C for 20 minutes. Thereafter the grinding wheel was cooled in the air.
  • a coating film 10 of fluororesin having a thickness of 25 ⁇ m was uniformly formed on the outer surface of the grinding face 2.
  • the electrodeposition grinding wheel which was coated with fluororesin according to the present invention it was possible to surface-grind the workpieces up to an amount of working of 50,000 mm 3 , while the clearances between the abrasive grains were hardly clogged up with chips and absolutely no chips were deposited onto the grinding face.
  • the clearances between the abrasive grains were clogged with chips at an amount of working of about 100 mm 3 and the chips were deposited onto the grinding face to disable continuation of the grinding.
  • a rotary grinding wheel according to the present invention which was formed in the aforementioned manner was employed to cylindrically grind a disc of polycarbonate resin having a diameter of 100 mm and a thickness of 5 mm.
  • This grinding was performed under conditions of a grinding wheel peripheral velocity of 800 m/min. and a depth of cut of 0.02 to 0.03 mm/rev.
  • the cylindrical grinding was carried out in both of wet and dry types, and chips were hardly deposited onto the grinding face and the clearances between the abrasive grains were hardly clogged up with chips in either type.
  • the projections 50 are formed by knurling in each of the aforementioned embodiments, the same may alternatively be formed by another cutting or grinding.
  • the coating film 10, which is made of Teflon in the above description may alternatively be made of another fluororesin.
  • the super abrasive grains 8, which are prepared from diamond abrasive grains in the aforementioned embodiments, may alternatively be prepared from CBN abrasive grains.
  • the present invention is not restricted to a discoidal grinding wheel, but is also applicable to another grinding wheel such as a straight cup grinding wheel. If necessary, a plurality of obliquely extending clearance grooves may be provided in the outer peripheral grinding face of the rotary grinding wheel, as described with reference to the background technique.
  • the number of the abrasive grains acting on grinding can be freely changed by changing the angles A and B of inclination and the pitches P.
  • the number of working abrasive grains optimizing discharge of chips can be set in response to the properties of the workpiece to be worked, whereby stable working can be carried out in high efficiency.
  • the present invention is also applicable to a deformed grinding wheel having a grinding face in the form of a circular arc which is convexed or concaved in the radial direction, or a grinding wheel consisting of a metal base which is in the form of a bar.
  • the inventive grinding wheel is optimum for working the outer peripheral surface of a plastic lens for an eyeglass which is made of polycarbonate resin.

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

Claims (10)

  1. Meule ayant une face de meulage (2) qui est pourvue de plusieurs saillies (50) qui sont formées sur une partie d'une matière de base (1) formant ladite face de meulage, lesdites saillies étant réparties de manière homogène à des hauteurs sensiblement uniformes, et des grains abrasifs (8) ayant des tailles de grain qui sont plus petites que lesdites hauteurs desdites saillies, en étant fixés sur les surfaces desdites saillies, lesdits grains abrasifs (8) étant fixés sur ladite face de meulage (2) de la matière de base (1) par l'intermédiaire d'une couche déposée par électrolyse (9), caractérisée par un film de revêtement (10) destiné à empêcher le dépôt de copeaux, ledit film de revêtement (10) étant formé afin de recouvrir au moins partiellement la surface extérieure de ladite face de meulage (2) et comprenant les surfaces desdits grains abrasifs (8), ledit film de revêtement (10) comprenant une résine fluorée.
  2. Meule selon la revendication 1, dans laquelle lesdites saillies (50) sont formées par des saillies pyramidales.
  3. Meule selon la revendication 2, dans laquelle des parties supérieures (5) respectives de celles desdites saillies pyramidales qui sont adjacentes l'une à l'autre le long d'un sens de rotation (Q) de ladite meule sont disposées afin d'être décalées l'une par rapport à l'autre perpendiculairement au dit sens de rotation.
  4. Meule selon la revendication 1, dans laquelle lesdites saillies (50) sont formées par des saillies pyramidales tronquées.
  5. Meule selon la revendication 4, dans laquelle des faces supérieures (51) respectives de celles desdites saillies pyramidales tronquées qui sont adjacentes l'une à l'autre le long d'un sens de rotation (Q) de ladite meule sont disposées afin d'être décalées l'une par rapport à l'autre perpendiculairement au dit sens de rotation.
  6. Meule selon la revendication 1, dans laquelle ledit film de revêtement (10) contient en outre une résine silicone.
  7. Meule selon la revendication 6, dans laquelle ledit film de revêtement (10) contient une charge se composant d'au moins une matière qui est choisie dans le groupe se composant du diamant, de l'oxyde métallique, du métal, du SiC, du verre, du graphite, du bisulfure de molybdène et du mica.
  8. Meule selon la revendication 7, dans laquelle ladite charge est contenue dans ledit film de revêtement (10) sous la forme d'au moins une charge choisie dans le groupe composé de particules, de poudre, de fibre et de barbe.
  9. Meule selon la revendication 6, dans laquelle ledit film de revêtement (10) contient en outre une autre résine en plus de ladite résine fluorée et de ladite résine silicone.
  10. Meule selon la revendication 1, dans laquelle lesdits grains abrasifs (8) sont fixés sur lesdites surfaces desdites saillies (50) par l'intermédiaire d'une couche de nickel (9).
EP19950116805 1995-10-25 1995-10-25 Meule Expired - Lifetime EP0770457B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1995619800 DE69519800T2 (de) 1995-10-25 1995-10-25 Schleifscheibe
EP19950116805 EP0770457B1 (fr) 1995-10-25 1995-10-25 Meule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19950116805 EP0770457B1 (fr) 1995-10-25 1995-10-25 Meule

Publications (2)

Publication Number Publication Date
EP0770457A1 EP0770457A1 (fr) 1997-05-02
EP0770457B1 true EP0770457B1 (fr) 2001-01-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950116805 Expired - Lifetime EP0770457B1 (fr) 1995-10-25 1995-10-25 Meule

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EP (1) EP0770457B1 (fr)
DE (1) DE69519800T2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5997597A (en) * 1998-02-24 1999-12-07 Norton Company Abrasive tool with knurled surface
CN101195256B (zh) * 2007-11-16 2011-02-09 丹阳华昌工具制造有限公司 具有曲线轮廓的金刚石串珠
KR101024674B1 (ko) * 2007-12-28 2011-03-25 신한다이아몬드공업 주식회사 소수성 절삭공구 및 그제조방법
CN102975292A (zh) * 2011-09-07 2013-03-20 福建万龙金刚石工具有限公司 多层钎焊金刚石串珠
CN103612215B (zh) * 2013-11-09 2015-11-04 郑州汇丰砂轮制造有限公司 一种砂轮的成型工艺
US9844853B2 (en) 2014-12-30 2017-12-19 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs Abrasive tools and methods for forming same
WO2017117524A1 (fr) 2015-12-30 2017-07-06 Saint-Gobain Abrasives, Inc. Outils abrasifs et leurs procédés de formation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868232A (en) * 1971-07-19 1975-02-25 Norton Co Resin-bonded abrasive tools with molybdenum metal filler and molybdenum disulfide lubricant
JPS573561U (fr) 1980-06-10 1982-01-09
US4511373A (en) * 1983-11-14 1985-04-16 The United States Of America As Represented By The United States Department Of Energy Fluorinated diamond particles bonded in a filled fluorocarbon resin matrix
DE4119872C2 (de) * 1991-06-17 1994-06-30 Kapp Werkzeugmasch Rotierendes Werkzeug zur spanabhebenden Bearbeitung von harten Werkstücken
JPH06114743A (ja) 1992-04-30 1994-04-26 Osaka Diamond Ind Co Ltd 電着砥石
JPH0754253Y2 (ja) 1993-09-02 1995-12-18 株式会社中越 帯締め
CH686787A5 (de) * 1993-10-15 1996-06-28 Diametal Ag Schleifbelag fuer Schleifwerkzeuge und Verfahren zur Herstellung des Schleifbelages.

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Publication number Publication date
EP0770457A1 (fr) 1997-05-02
DE69519800D1 (de) 2001-02-08
DE69519800T2 (de) 2001-08-02

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