WO1998042479A1 - Deformable polishing tool - Google Patents

Deformable polishing tool Download PDF

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Publication number
WO1998042479A1
WO1998042479A1 PCT/FR1998/000600 FR9800600W WO9842479A1 WO 1998042479 A1 WO1998042479 A1 WO 1998042479A1 FR 9800600 W FR9800600 W FR 9800600W WO 9842479 A1 WO9842479 A1 WO 9842479A1
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WO
WIPO (PCT)
Prior art keywords
polishing
lines
support
polishing piece
intervals
Prior art date
Application number
PCT/FR1998/000600
Other languages
French (fr)
Inventor
Georges Henri Broido
Original Assignee
Lam Plan S.A.
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 Lam Plan S.A. filed Critical Lam Plan S.A.
Publication of WO1998042479A1 publication Critical patent/WO1998042479A1/en

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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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
    • 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
    • B24B11/00—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • 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

Definitions

  • a polishing tool machined to a curved shape corresponding to that of the part to be polished has hitherto been used. After wear of the tool, it had to be re-machined by modifying its curvature. The tool could no longer be used to continue polishing the same part.
  • US Patent No. 4,010,583 describes an abrasive pad consisting for example of a malleable support having, in one piece, studs.
  • This embodiment differs from the invention, on the one hand, in that the polishing piece is not made of abrasive material, and, on the other hand and above all, in that the polishing piece according to the invention is in two parts, one flexible, which can be assimilated to the support and the other rigid, which cannot be in one piece with the flexible support.
  • the invention relates to a polishing piece which, while being able to adapt to a polishing tool with a curved surface, makes it possible to have a surface of the polishing tool, in contact with a surface to be machined via a sufficiently hard paste or abrasive liquid.
  • the polishing piece made of non-abrasive material comprises a substrate made of a rigid material and an underlying flexible support. It is characterized in that the substrate consists of pads separated by intervals, these intervals defining at least two lines extending in the same direction from one side of the support to the other.
  • the two lines can be parallel or, when the support is a disc, be radial.
  • the center of the support is considered to be one of its sides.
  • the lines extend over radii, without it being necessary for them to extend over diameters.
  • there are several equidistant lines which means for parallel lines that they are at the same distance and for radial lines that their angular deviation is the same. Thanks to these intervals which extend over at least two lines and preferably over several lines, the substrate made of a rigid material can be bent along these lines, which gives it the flexibility necessary to adapt to curved surfaces to be polished, the underlying flexible support adapting without difficulty. This gives a polishing piece that is both flexible, but whose substrate made of a rigid material is hard.
  • An adhesive layer is generally provided on the face of the support opposite the substrate, a layer by which the piece can be bonded to the polishing tool itself. When the part is worn, we take it off and replace it.
  • FIG. 1 represents a top view of a polishing piece according to the invention, in the form of a disc.
  • FIGS. 2a, 2b and 2c are side views of a piece polishing according to the invention, in a non-deformed state, in a first deformed state and in a second deformed state respectively.
  • Figures 3 to 12 show other polishing pieces in the shape of a rectangle with pads of various shapes separated by intervals.
  • Figures 13 and 14 each show a top view of another polishing disc-shaped part.
  • FIG. 15 represents a top view of a polishing disc, the studs of which are distributed, according to the quarters, in different patterns.
  • FIG. 1 represents a top view of a polishing piece according to the invention, in the form of a disc.
  • FIGS. 2a, 2b and 2c are side views of a piece polishing according to the invention, in a non-deformed state, in a first deformed state and in a second deformed state respectively.
  • FIG. 16a is a perspective view of a workpiece and of the shape taken by the disc of FIG. 1 to adapt to it, with a view to running in.
  • Figure 16b is a perspective view of another workpiece and of the shape taken by the disc of Figure 1 to adapt to it, for lapping.
  • Figure 17a is a perspective view of a workpiece and the shape taken by one of the polishing parts of Figures 3 to 12 to adapt to it, for a lapping.
  • Figure 17b is a perspective view of another workpiece and IO of the form taken by one of the polishing parts of Figures 3 to 12 to adapt to it, for a lapping.
  • the polishing piece is disc-shaped. Studs
  • intervals 3, 4 define a
  • Radial cutouts 5 are provided in the flexible support 2. They delimit six disc quarters, in each of which the studs form a grid.
  • the intervals 3, 4 have a width of 1 to 6 mm and the studs have a height, with respect to the flexible support, of 0.3 to 7 mm.
  • the square studs can have, for example, side lengths from 25 to 40 mm.
  • the lengths, widths and heights indicated with reference to FIG. 1 also apply to the embodiments shown in the other figures, it being understood that the width of the gap means the minimum distance between two studs.
  • the flexible support 2 can easily be bent so as to give the polishing piece a required shape, corresponding to the shape of the workpiece, as shown in
  • Figures 3 to 12 show other polishing pieces in the form of rectangles, where the studs have the shape of small tiles (Figure 3), large tiles (Figure 4), large rectangles (Figure 5), small rectangles ( Figure 6 ),
  • FIG. 13 shows another polishing disc, the studs 1 of which are arranged in an angularly constant grid, the intervals 4 in the form of radial lines converge towards one another at the center of the disc where an interval 6 in the form of a circle is formed.
  • FIG. 14 shows another polishing disc where the pads 1 are in the form of circles, distributed in a regular arrangement over the entire surface of the disc and the intervals in the form of radial straight lines being indicated by solid lines, converging towards the center, the radius of the circles increasing from the center to the periphery.
  • FIG. 15 a polishing disc having, like the disc in FIG. 1, cutouts made in the flexible support 2, is shown.
  • FIG. 16a represents a workpiece 7 to be machined and a polishing disc 2 whose shape is adapted to that of the workpiece.

Abstract

The invention relates to a part for polishing, comprised of a substrate of a rigid material and an underlying flexible support. The substrate consists of contacts (1) separated by intervals (3, 4), said intervals (3, 4) defining at least two lines (3) extending in the same direction from one side of the support to the other.

Description

Outil de polissage déformableDeformable polishing tool
Pour polir une pièce courbe, telle qu'un cylindre ou une sphère, on utilisait jusqu'ici un outil de polissage usiné à une forme courbe correspondant à celle de la pièce à polir. Après usure de l'outil, il fallait le réusiner en en modifiant la courbure. L'outil ne pouvait plus être utilisé pour continuer à polir la même pièce.To polish a curved part, such as a cylinder or a sphere, a polishing tool machined to a curved shape corresponding to that of the part to be polished has hitherto been used. After wear of the tool, it had to be re-machined by modifying its curvature. The tool could no longer be used to continue polishing the same part.
Pour pallier cet inconvénient, on avait déjà pensé à utiliser une pièce d'usure sous la forme d'une pièce souple que l'on pouvait conformer aisément à la forme requise et que l'on collait sur l'outil pour, après usure, la décoller et la remplacer. Cette pièce déformable n'avait pas la dureté nécessaire à l'obtention d'une bonne géométrie du polissage.To overcome this drawback, we had already thought of using a wearing part in the form of a flexible part which could easily conform to the required shape and which we stuck on the tool for, after wear, take it off and replace it. This deformable part did not have the hardness necessary to obtain a good polishing geometry.
Le brevet américain n° 4 010 583 décrit une pastille abrasive constituée par exemple d'un support maléable ayant, d'un seul tenant, des plots. Cette réalisation se distingue de l'invention, d'une part, en ce que la pièce de polissage n'est pas en matériau abrasif, et, d'autre part et surtout, en ce que la pièce de polissage suivant l'invention est en deux parties, l'une souple, que l'on peut assimiler au support et l'autre rigide, qui ne peut pas être d'un seul tenant avec le support souple.US Patent No. 4,010,583 describes an abrasive pad consisting for example of a malleable support having, in one piece, studs. This embodiment differs from the invention, on the one hand, in that the polishing piece is not made of abrasive material, and, on the other hand and above all, in that the polishing piece according to the invention is in two parts, one flexible, which can be assimilated to the support and the other rigid, which cannot be in one piece with the flexible support.
L'invention vise une pièce de polissage qui, tout en pouvant s'adapter à un outil de polissage de surface courbe, permet d'avoir une surface de l'outil de polissage, au contact d'une surface à usiner par l'intermédiaire d'une pâte ou d'un liquide abrasif, suffisamment dure.The invention relates to a polishing piece which, while being able to adapt to a polishing tool with a curved surface, makes it possible to have a surface of the polishing tool, in contact with a surface to be machined via a sufficiently hard paste or abrasive liquid.
La pièce de polissage en matériau non abrasif comprend un substrat en un matériau rigide et un support souple sous-jacent. Elle est caractérisée en ce que le substrat est constitué de plots séparés par des intervalles, ces intervalles définissant au moins deux lignes s'étendant dans une même direction d'un côté du support à l'autre.The polishing piece made of non-abrasive material comprises a substrate made of a rigid material and an underlying flexible support. It is characterized in that the substrate consists of pads separated by intervals, these intervals defining at least two lines extending in the same direction from one side of the support to the other.
Les deux lignes peuvent être parallèles ou, lorsque le support est un disque, être radiales. Dans ce cas, le centre du support est considéré comme l'un de ses côtés. En d'autres termes, il suffit que les lignes s'étendent sur des rayons, sans qu'il soit besoin qu'elles s'étendent sur des diamètres. On préfère qu'il y ait plusieurs lignes équidistantes, ce qui signifie pour des lignes parallèles qu'elles sont à la même distance et pour des lignes radiales que leur écart angulaire est le même. Grâce à ces intervalles qui s'étendent sur au moins deux lignes et, de préférence, sur plusieurs lignes, le substrat en un matériau rigide peut être courbé le long de ces lignes, ce qui lui confère la souplesse nécessaire pour s'adapter à des surfaces courbes à polir, le support souple sous-jacent s'adaptant sans difficulté. On obtient ainsi une pièce de polissage à la fois souple, mais dont le substrat en un matériau rigide est dur.The two lines can be parallel or, when the support is a disc, be radial. In this case, the center of the support is considered to be one of its sides. In other words, it suffices that the lines extend over radii, without it being necessary for them to extend over diameters. It is preferred that there are several equidistant lines, which means for parallel lines that they are at the same distance and for radial lines that their angular deviation is the same. Thanks to these intervals which extend over at least two lines and preferably over several lines, the substrate made of a rigid material can be bent along these lines, which gives it the flexibility necessary to adapt to curved surfaces to be polished, the underlying flexible support adapting without difficulty. This gives a polishing piece that is both flexible, but whose substrate made of a rigid material is hard.
Pour faciliter l'adaptation de la pièce de polissage à des surfaces courbes à polir, on peut prévoir, notamment lorsque le support est un disque, des découpes radiales.To facilitate the adaptation of the polishing piece to curved surfaces to be polished, it is possible to provide, in particular when the support is a disc, radial cuts.
On prévoit généralement une couche adhésive sur la face du support opposée au substrat, couche grâce à laquelle on peut coller la pièce sur l'outil de polissage proprement dit. Lorsque la pièce est usée, on la décolle et on la remplace.An adhesive layer is generally provided on the face of the support opposite the substrate, a layer by which the piece can be bonded to the polishing tool itself. When the part is worn, we take it off and replace it.
Aux dessins, donnés uniquement à titre d'exemple, la figure 1 représente une vue de dessus d'une pièce de polissage suivant l'invention, en forme de disque les figures 2a, 2b et 2c sont des vues de côté d'une pièce de polissage suivant l'invention, dans un état non déformé, dans un premier état déformé et dans un second état déformé respectivement. les figures 3 à 12 représentent d'autres pièces de polissage en forme de rectangle avec des plots de formes variées séparés par des intervalles. les figures 13 et 14 représentent chacune une vue de dessus d'une autre pièce de polissage en forme de disque. la figure 15 représente une vue de dessus d'un disque de polissage dont les plots sont répartis, suivant les quartiers, en motifs différents. la figure 16a est une vue en perspective d'une pièce à usiner et de la forme prise par le disque de la figure 1 pour s'y adapter, en vue d'un rodage. la figure 16b est une vue en perspective d'une autre pièce à usiner et de la forme prise par le disque de la figure 1 pour s'y adapter, en vue d'un 5 rodage. la figure 17a est une vue en perspective d'une pièce à usiner et de la forme prise par l'une des pièces de polissage des figures 3 à 12 pour s'y adapter, en vue d'un rodage. la figure 17b est une vue en perspective d'une autre pièce à usiner et I O de la forme prise par l'une des pièces de polissage des figures 3 à 12 pour s'y adapter, en vue d'un rodage.In the drawings, given solely by way of example, FIG. 1 represents a top view of a polishing piece according to the invention, in the form of a disc. FIGS. 2a, 2b and 2c are side views of a piece polishing according to the invention, in a non-deformed state, in a first deformed state and in a second deformed state respectively. Figures 3 to 12 show other polishing pieces in the shape of a rectangle with pads of various shapes separated by intervals. Figures 13 and 14 each show a top view of another polishing disc-shaped part. FIG. 15 represents a top view of a polishing disc, the studs of which are distributed, according to the quarters, in different patterns. FIG. 16a is a perspective view of a workpiece and of the shape taken by the disc of FIG. 1 to adapt to it, with a view to running in. Figure 16b is a perspective view of another workpiece and of the shape taken by the disc of Figure 1 to adapt to it, for lapping. Figure 17a is a perspective view of a workpiece and the shape taken by one of the polishing parts of Figures 3 to 12 to adapt to it, for a lapping. Figure 17b is a perspective view of another workpiece and IO of the form taken by one of the polishing parts of Figures 3 to 12 to adapt to it, for a lapping.
A la figure 1 , la pièce de polissage est en forme de disque. Des plotsIn Figure 1, the polishing piece is disc-shaped. Studs
1 , en un matériau rigide, sont collés sur un support 2 souple, et sont séparés les uns des autres par des intervalles 3, 4. Les intervalles 3, 4 définissent un1, made of a rigid material, are bonded to a flexible support 2, and are separated from each other by intervals 3, 4. The intervals 3, 4 define a
15 quadrillage angulairement régulier, constitué de cercles 4 concentriques et de droites 3 radiales, espacées angulairement régulièrement les unes des autres.15 angularly regular grid, consisting of concentric circles 4 and 3 radial lines, angularly regularly spaced from each other.
Des découpes 5 radiales sont prévues dans le support 2 souple. Elles délimitent six quartiers de disque, dans chacun desquels les plots forment un quadrillage. 20 Les intervalles 3, 4 ont une largeur de 1 à 6 mm et les plots ont une hauteur, par rapport au support souple de 0,3 à 7 mm. Pour un diamètre du disque de 150 mm, les plots carrés peuvent avoir par exemple des longueurs de côté de 25 à 40 mm. Les longueurs, largeurs et hauteurs indiquées à propos de la figure 1 sont valables aussi pour les modes de réalisation 25 représentés aux autres figures, étant entendu que la largeur de l'intervalle s'entend de la distance minimum entre deux plots.Radial cutouts 5 are provided in the flexible support 2. They delimit six disc quarters, in each of which the studs form a grid. The intervals 3, 4 have a width of 1 to 6 mm and the studs have a height, with respect to the flexible support, of 0.3 to 7 mm. For a disc diameter of 150 mm, the square studs can have, for example, side lengths from 25 to 40 mm. The lengths, widths and heights indicated with reference to FIG. 1 also apply to the embodiments shown in the other figures, it being understood that the width of the gap means the minimum distance between two studs.
Comme on peut le voir aux figures 2b et 2c, le support 2 souple peut facilement être courbé de manière à donner à la pièce de polissage une forme requise, correspondant à la forme de la pièce à usiner, comme représenté auxAs can be seen in Figures 2b and 2c, the flexible support 2 can easily be bent so as to give the polishing piece a required shape, corresponding to the shape of the workpiece, as shown in
30 figures 16 et 17, les plots 1 rigides assurant cependant une dureté suffisante pour le polissage.30 Figures 16 and 17, the pads 1 rigid, however, ensuring sufficient hardness for polishing.
Les figures 3 à 12 représentent d'autres pièces de polissage en forme de rectangles, où les plots ont une forme de petits carreaux (figure 3), grands carreaux (figure 4), grands rectangles (figure 5), petits rectangles (figure 6),Figures 3 to 12 show other polishing pieces in the form of rectangles, where the studs have the shape of small tiles (Figure 3), large tiles (Figure 4), large rectangles (Figure 5), small rectangles (Figure 6 ),
35 grands triangles (figure 7), petits triangles (figure 8), petites ellipses (figure 9), petits cercles (figure 10), grands cercles (figure 11) et grandes ellipses (figure 12). Dans chacune de ces pièces de polissage, les plots sont séparés par des intervalles qui définissent plusieurs lignes s'étendant dans deux directions perpendiculaires d'un côté du support à l'autre. La figure 13 représente un autre disque de polissage dont les plots 1 sont agencés suivant un quadrillage angulairement constant, les intervalles 4 en forme de droites radiales convergent les unes vers les autres au centre du disque où un intervalle 6 en forme de cercle est formé.35 large triangles (figure 7), small triangles (figure 8), small ellipses (figure 9), small circles (Figure 10), large circles (Figure 11) and large ellipses (Figure 12). In each of these polishing pieces, the pads are separated by intervals which define several lines extending in two directions perpendicular from one side of the support to the other. FIG. 13 shows another polishing disc, the studs 1 of which are arranged in an angularly constant grid, the intervals 4 in the form of radial lines converge towards one another at the center of the disc where an interval 6 in the form of a circle is formed.
La figure 14 représente une autre disque de polissage où les plots 1 sont en forme de cercles, répartis suivant un agencement régulier sur toute la surface du disque et les intervalles en forme de droites radiales étant indiqués par des lignes en traits pleins, convergent vers le centre, le rayon des cercles augmentant du centre à la périphérie.FIG. 14 shows another polishing disc where the pads 1 are in the form of circles, distributed in a regular arrangement over the entire surface of the disc and the intervals in the form of radial straight lines being indicated by solid lines, converging towards the center, the radius of the circles increasing from the center to the periphery.
A la figure 15, un disque de polissage ayant, comme le disque de la figure 1 , des découpes ménagées dans le support 2 souple, est représenté.In FIG. 15, a polishing disc having, like the disc in FIG. 1, cutouts made in the flexible support 2, is shown.
Dans chacun des six quartiers délimités par ces découpes, des plots de formes différentes ont été collés. Ils correspondent chacun à des motifs du même genre que ceux représentés aux figures 3 à 12.In each of the six districts delimited by these cutouts, studs of different shapes have been glued. They each correspond to patterns of the same kind as those shown in Figures 3 to 12.
La figure 16a représente une pièce 7 à usiner et un disque 2 de polissage dont la forme est adaptée à celle de la pièce à usiner.FIG. 16a represents a workpiece 7 to be machined and a polishing disc 2 whose shape is adapted to that of the workpiece.
Il en est de même pour les figures 16b, 17a et 17b, la pièce à usiner étant concave (figure 16b), ou correspondant à l'extérieur d'un cylindre (figure 17a) ou à l'intérieur d'un cylindre (figure 17b). It is the same for Figures 16b, 17a and 17b, the workpiece being concave (Figure 16b), or corresponding to the outside of a cylinder (Figure 17a) or inside a cylinder (Figure 17b).

Claims

REVENDICATIONS
1. Pièce de polissage en matériau non abrasif, comprenant un substrat en un matériau rigide et un support (2) souple sous-jacent, caractérisée en ce que le substrat est constitué de plots (1) séparés par des intervalles (3, 4), ces intervalles (3, 4) définissant au moins deux lignes (3) s'étendant dans une même direction d'un côté du support à l'autre.1. Polishing piece made of non-abrasive material, comprising a substrate made of a rigid material and an underlying flexible support (2), characterized in that the substrate consists of pads (1) separated by intervals (3, 4) , these intervals (3, 4) defining at least two lines (3) extending in the same direction from one side of the support to the other.
2. Pièce de polissage suivant la revendication 1 , caractérisée en ce que les deux lignes sont parallèles. 2. Polishing piece according to claim 1, characterized in that the two lines are parallel.
3. Pièce de polissage suivant la revendication 1 , caractérisée en ce que la pièce a la forme d'un disque et les lignes sont radiales.3. Polishing piece according to claim 1, characterized in that the piece has the shape of a disc and the lines are radial.
4. Pièce de polissage suivant la revendication 2, caractérisée en ce que les lignes sont équidistantes.4. Polishing piece according to claim 2, characterized in that the lines are equidistant.
5. Pièce de polissage suivant la revendication 3, caractérisée en ce que l'écart angulaire des lignes radiales est constant.5. Polishing piece according to claim 3, characterized in that the angular deviation of the radial lines is constant.
6. Pièce de polissage suivant l'une des revendications 1 , 2 ou 4, caractérisée en ce que des découpes (5) parallèles aux lignes sont prévues dans le support (2) souple.6. Polishing piece according to one of claims 1, 2 or 4, characterized in that cutouts (5) parallel to the lines are provided in the support (2) flexible.
7. Pièce de polissage suivant la revendication 3 ou 5, caractérisée en ce que des découpes (5) radiales sont prévues dans le support souple.7. Polishing piece according to claim 3 or 5, characterized in that radial cutouts (5) are provided in the flexible support.
8. Pièce de polissage suivant l'une des revendications précédentes, caractérisée en ce qu'il est prévu une couche adhésive sur la face du support opposée au substrat, de manière à pouvoir coller la pièce sur l'outil de polissage. 8. Polishing piece according to one of the preceding claims, characterized in that an adhesive layer is provided on the face of the support opposite the substrate, so as to be able to stick the piece on the polishing tool.
PCT/FR1998/000600 1997-03-25 1998-03-25 Deformable polishing tool WO1998042479A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR97/03605 1997-03-25
FR9703605A FR2761289B1 (en) 1997-03-25 1997-03-25 DEFORMABLE POLISHING TOOL

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WO1998042479A1 true WO1998042479A1 (en) 1998-10-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2582639A (en) * 2019-03-29 2020-09-30 Zeeko Innovations Ltd Shaping apparatus, method and tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2786118B1 (en) * 1998-11-19 2000-12-22 Lam Plan Sa LAPPING OR POLISHING DEVICE

Citations (5)

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Publication number Priority date Publication date Assignee Title
US4010583A (en) * 1974-05-28 1977-03-08 Engelhard Minerals & Chemicals Corporation Fixed-super-abrasive tool and method of manufacture thereof
GB2043501A (en) * 1979-02-28 1980-10-08 Interface Developments Ltd Abrading member
US5020282A (en) * 1988-04-02 1991-06-04 Sankyo Rikagaku Co., Ltd. Grinding tool and method of making the same
US5177908A (en) * 1990-01-22 1993-01-12 Micron Technology, Inc. Polishing pad
FR2699101A1 (en) * 1992-12-11 1994-06-17 Bourgeois Sa Optical lens surface smoothing device - includes abrasive elements in form of diamond pellets integral with supple metal netting support applied by pressure against driving tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010583A (en) * 1974-05-28 1977-03-08 Engelhard Minerals & Chemicals Corporation Fixed-super-abrasive tool and method of manufacture thereof
GB2043501A (en) * 1979-02-28 1980-10-08 Interface Developments Ltd Abrading member
US5020282A (en) * 1988-04-02 1991-06-04 Sankyo Rikagaku Co., Ltd. Grinding tool and method of making the same
US5177908A (en) * 1990-01-22 1993-01-12 Micron Technology, Inc. Polishing pad
FR2699101A1 (en) * 1992-12-11 1994-06-17 Bourgeois Sa Optical lens surface smoothing device - includes abrasive elements in form of diamond pellets integral with supple metal netting support applied by pressure against driving tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2582639A (en) * 2019-03-29 2020-09-30 Zeeko Innovations Ltd Shaping apparatus, method and tool
GB2582639B (en) * 2019-03-29 2023-10-18 Zeeko Innovations Ltd Shaping apparatus, method and tool

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FR2761289B1 (en) 1999-05-21
FR2761289A1 (en) 1998-10-02

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