EP0283395B1 - Grinding wheel dressing device - Google Patents

Grinding wheel dressing device Download PDF

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Publication number
EP0283395B1
EP0283395B1 EP19880400601 EP88400601A EP0283395B1 EP 0283395 B1 EP0283395 B1 EP 0283395B1 EP 19880400601 EP19880400601 EP 19880400601 EP 88400601 A EP88400601 A EP 88400601A EP 0283395 B1 EP0283395 B1 EP 0283395B1
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EP
European Patent Office
Prior art keywords
grinding wheel
dressing
wheel
shaft
support
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
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EP19880400601
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German (de)
French (fr)
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EP0283395A1 (en
Inventor
Paul Favrot
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
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Automobiles Peugeot SA
Automobiles Citroen SA
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Publication of EP0283395A1 publication Critical patent/EP0283395A1/en
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    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/12—Dressing tools; Holders therefor
    • B24B53/14—Dressing tools equipped with rotary rollers or cutters; Holders 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/07—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels by means of forming tools having a shape complementary to that to be produced, e.g. blocks, profile rolls

Definitions

  • the cutting devices for grinding wheels used until now generally include a template whose shape is complementary to that of the grinding wheel.
  • these devices have the drawback of requiring a large connection angle between the connection toroids and the flanks.
  • these sides must be pre-cut, a long and sometimes dangerous operation because it is practically impossible to automate.
  • Document FR-A-2 405 786 describes a device for cutting a grinding wheel having its axis rotatably mounted in a frame which comprises at least two diamond wheels whose axes are parallel to each other and perpendicular to the 'axis of the wheel and are rotatably mounted in a movable support and means for cutting the periphery of the wheel.
  • the present invention relates to a cutting device for grinding wheels, of the above type but which is much more precise.
  • This device is characterized in that the support for the diamond wheels is movable in a direction perpendicular to the axis of the wheels, therefore parallel to the axis of the grinding wheel, and in that the means for cutting the periphery of the grinding wheel are constituted by a scrubber carried by the support.
  • the wheel support being movable along an axis parallel to the axis of the wheel, the two wheels located on either side of the wheel operate separately; lateral wear of the grinding wheel is thus automatically compensated.
  • the movement of the carriage parallel to the axis of the grinding wheel allows the use of a scrubber whose position can be defined to the micron. This scrubber cuts the grinding wheel according to straight generators while the cup wheel of the aforementioned document traces arcs of a circle.
  • Each of the wheels preferably has two active parts, one cylindrical in its upper part and the other having a toric shape extended by frustoconical parts which make the same angle respectively with the axis of the grinding wheel and with a plane perpendicular to this axis.
  • a carriage 4 can be moved relative to the frame 3 in the direction x-x parallel to the axis of the shaft 2, by means not shown in the drawing.
  • Two pins 5a and 5b are mounted for rotation in the carriage 4, around an axis parallel to the axis y-y perpendicular to the axis x-x, and can be driven in rotation by a motor 6a or 6b.
  • Each of these pins carries a diamond wheel 7a or 7b which is fixed to the end 8 of the pin by a screw 9 and a washer 10.
  • a sheath 11 serving as a support for a rubbing device 12 fixed by a screw 13 is slidably mounted in the carriage 4, between the two pins 5g and 5b, in the direction of the yy axis and can be moved by means described further.
  • each of the wheels 7a and 7b is approximately complementary to the toric part of the grinding wheel 1.
  • the wheel has diamond grains, in two places, at its upper cylindrical part 14a and on its toric part 14b. But experience shows that it is impossible to cut the grinding wheel so that its toric part 1a or 1b is connected exactly with its side on the one hand, with its periphery on the other hand. This is due to the fact that the diameter of the upper part 14a of the wheel cannot be strictly equal to the internal diameter of its toric part; it differs from it by a value k, that is to say that the diameter on which the centers of this toric part are found has the value d + 2r + k, r being the radius of said toric part.
  • the position of the wiper 11 must be determined with great precision which can be of the order of a micron, in particular when the device has to cut several coaxial grinding wheels of the same diameters.
  • a bar 15 made of nickel or another material undergoing a variation in length under the effect of an electromagnetic field is fixed to two guide cylinders 16a and 16b which are slidably mounted with a small clearance in the carriage 4 and one of which is integral with the sheath 11.
  • the cylinders 16a and 16b are pressed into the carriage 4 by brake pistons 17a and 17b pushed by elastic washers 18a and 18b bearing on plugs 19a and 19b.
  • the cylinders in which the pistons are mounted are connected to the pressure source 20 of the machine by conduits 21a and 21b on which distributors 22a and 22b are interposed, the pressure in one of the cylinders having the effect of reversing) e corresponding piston against the action of the elastic washer 18a or 18b.
  • a coil 23 which can be supplied with current via a contactor 24.
  • the solenoid valve 22a When the device is started up, the solenoid valve 22a is de-energized while the solenoid valve 22 j b is energized, so that only the brake 17a is applied.
  • the present invention should not be considered as limited to the embodiment described and shown.
  • the same wheel cuts the left flank and the left toric part of the grinding wheel located on the right and the right flank and the right toric part of the grinding wheel located on the left.
  • the device can be incorporated into a grinding machine, for example a straight plunge grinding machine, the position of the rubbers being controlled by the diameter of the grinding wheel 1 measured by a self-calibrating gauge carried by the grinding machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

On doit régulièrement tailler les meules, telles que celles utilisées par exemple pour la rectification des pièces de moteur automobile. Ce taillage doit porter aussi bien sur la périphérie de la meule que sur les bords des flancs et sur les parties toriques raccordant ces flancs à la périphérie de la meule. Les dispositifs de taillage des meules utilisés jusqu'à présent comportent généralement un gabarit dont la forme est complémentaire de celle de la meule. Mais ces dispositifs présentent l'inconvénient d'exiger un angle de raccordement important entre les tores de raccordement et les flancs. De plus, ces flancs doivent être prétaillés, opération longue et parfois dangereuse car elle est pratiquement impossible à automatiser.We must regularly cut the grinding wheels, such as those used for example for the grinding of automobile engine parts. This cutting must bear as well on the periphery of the grinding wheel as on the edges of the flanks and on the toric parts connecting these flanks to the periphery of the grinding wheel. The cutting devices for grinding wheels used until now generally include a template whose shape is complementary to that of the grinding wheel. However, these devices have the drawback of requiring a large connection angle between the connection toroids and the flanks. In addition, these sides must be pre-cut, a long and sometimes dangerous operation because it is practically impossible to automate.

Le document FR-A-2 405 786 décrit un dispositif de taillage d'une meule ayant son axe monté à rotation dans un bâti qui comporte au moins deux molettes diamantées dont les axes sont parallèles l'un à l'autre et perpendiculaires à l'axe de la meule et sont montés à rotation dans un support mobile et des moyens pour tailler la périphérie de la meule.Document FR-A-2 405 786 describes a device for cutting a grinding wheel having its axis rotatably mounted in a frame which comprises at least two diamond wheels whose axes are parallel to each other and perpendicular to the 'axis of the wheel and are rotatably mounted in a movable support and means for cutting the periphery of the wheel.

La présente invention a pour objet un dispositif de taillage de meules, du type ci-dessus mais qui est beaucoup plus précis.The present invention relates to a cutting device for grinding wheels, of the above type but which is much more precise.

Ce dispositif est caractérisé en ce que le support des molettes diamantées est mobile dans une direction perpendiculaire à l'axe des molettes, donc parallèle à l'axe de la meule, et en ce que les moyens pour tailler la périphérie de la meule sont constitués par un frottoir porté par le support. Le support des molettes étant mobile suivant un axe parallèle à l'axe de la meule, les deux molettes situées de part et d'autre de la meule interviennent séparément; l'usure latérale de la meule est ainsi automatiquement compensée. Par ailleurs, le déplacement du chariot parallèlement à l'axe de la meule permet l'utilisation d'un frottoir dont la position peut-être définie au micron. Ce frottoir taille la meule selon des génératrices rectilignes alors que la molette boisseau du document précité trace des arcs de cercle.This device is characterized in that the support for the diamond wheels is movable in a direction perpendicular to the axis of the wheels, therefore parallel to the axis of the grinding wheel, and in that the means for cutting the periphery of the grinding wheel are constituted by a scrubber carried by the support. The wheel support being movable along an axis parallel to the axis of the wheel, the two wheels located on either side of the wheel operate separately; lateral wear of the grinding wheel is thus automatically compensated. Furthermore, the movement of the carriage parallel to the axis of the grinding wheel allows the use of a scrubber whose position can be defined to the micron. This scrubber cuts the grinding wheel according to straight generators while the cup wheel of the aforementioned document traces arcs of a circle.

Chacune des molettes comporte de préférence deux parties actives, l'une cylindrique dans sa partie haute et l'autre ayant une forme torique prolongée par des parties tronconiques qui font le même angle respectivement avec l'axe de la meule et avec un plan perpendiculaire à cet axe.Each of the wheels preferably has two active parts, one cylindrical in its upper part and the other having a toric shape extended by frustoconical parts which make the same angle respectively with the axis of the grinding wheel and with a plane perpendicular to this axis.

On a décrit ci-après à titre d'exemple non limitatif, un mode de réalisation du dispositif selon l'invention, avec référence aux dessins annexés dans lesquels :

  • La Figure 1 en est une vue en plan schématique;
  • La Figure 2 est une vue à plus grande échelle montrant le frottoir et l'une des molettes;
  • La Figure 3 est une vue en coupe d'un fourreau porte-frottoir et montre les moyens pour déplacer axialement le fourreau.
An embodiment of the device according to the invention has been described below by way of nonlimiting example, with reference to the appended drawings in which:
  • Figure 1 is a schematic plan view thereof;
  • Figure 2 is an enlarged view showing the scrubber and one of the wheels;
  • Figure 3 is a sectional view of a scrub holder sleeve and shows the means for axially moving the sleeve.

A la Figure 1, on voit une meule 1 qui est fixée sur un arbre 2 monté à rotation dans un bâti 3.In Figure 1, we see a grinding wheel 1 which is fixed on a shaft 2 rotatably mounted in a frame 3.

Un chariot 4 peut être déplacé par rapport au bâti 3 dans la direction x-x parallèle à l'axe de l'arbre 2, par des moyens non représentés au dessin.A carriage 4 can be moved relative to the frame 3 in the direction x-x parallel to the axis of the shaft 2, by means not shown in the drawing.

Deux broches 5a et 5b sont montées à rotation dans le chariot 4, autour d'un axe parallèle à l'axe y-y perpendiculaire à l'axe x-x, et peuvent être entraînées en rotation par un moteur 6a ou 6b. Chacune de ces broches porte une molette diamantée 7a ou 7b qui est fixée sur l'extrémité 8 de la broche par une vis 9 et une rondelle 10.Two pins 5a and 5b are mounted for rotation in the carriage 4, around an axis parallel to the axis y-y perpendicular to the axis x-x, and can be driven in rotation by a motor 6a or 6b. Each of these pins carries a diamond wheel 7a or 7b which is fixed to the end 8 of the pin by a screw 9 and a washer 10.

Par ailleurs, un fourreau 11 servant de support pour un frottoir 12 fixe par une vis 13 est monté coulissant dans le chariot 4, entre les deux broches 5g et 5b, dans la direction de l'axe y-y et peut être déplacé par des moyens décrits plus loin.Furthermore, a sheath 11 serving as a support for a rubbing device 12 fixed by a screw 13 is slidably mounted in the carriage 4, between the two pins 5g and 5b, in the direction of the yy axis and can be moved by means described further.

Le profil de chacune des molettes 7a et 7b est approximativement complémentaire de la partie torique de la meule 1. Après avoir réglé la position axiale des broches 5_a et 5b de façon que la base des tores des molettes 7a et 7b se trouve sur une ligne sensiblement confondue avec une génératrice de la meule 1, on déplace le chariot 4 de façon à tailler à l'aide de la molette 7a le flanc gauche et le rayon gauche 1 a de la meule, puis à l'aide de la molette 7b le flanc droit et le rayon droit lb de cette meule. On taille enfin la périphérie de la meule à l'aide du frottoir 12.The profile of each of the wheels 7a and 7b is approximately complementary to the toric part of the grinding wheel 1. After having adjusted the axial position of the pins 5_a and 5b so that the base of the toroids of the wheels 7a and 7b is on a line substantially combined with a generator of the grinding wheel 1, the carriage 4 is moved so as to cut with the wheel 7a the left flank and the left spoke 1 a of the grinding wheel, then with the wheel 7b the side right and the right radius lb of this wheel. Finally, the periphery of the grinding wheel is cut using the scrubber 12.

La molette possède des grains de diamant, en deux endroits, à sa partie cylindrique haute 14a et sur sa partie torique 14b. Mais l'expérience montre qu'il est impossible de tailler la meule de façon que sa partie torique 1a ou 1b se raccorde exactement avec son flanc d'une part, avec sa périphérie d'autre part. Cela est du au fait que le diamètre de la partie supérieure 14a de la molette ne peut être rigoureusement égal au diamètre intérieur de sa partie torique; il en diffère d'une valeur k , c'est-à-dire que le diamètre sur lequel se trouvent les centres de cette partie torique a pour valeur d+2r+k, r étant le rayon de ladite partie torique. De même, il est impossible que la partie travaillante du frottoir 12 soit rigoureusement à une distance r du plan contenant les centres de la partie torique 14.12 de la molette; il en diffère d'une valeur k'. Pour remédier à cette difficulté, on s'arrange pour que les valeurs respectives k et k' soient toujours positives et on donne à la molette un profil tel que sa partie torique 14b se prolonge par des parties tronconiques qui font le même angle a respectivement avec la direction x-x et avec la direction y-y, comme cela apparaît à la Figure 2. L'angle a qui est connu, doit être aussi faible que possible, de l'ordre de 1 à 3°.The wheel has diamond grains, in two places, at its upper cylindrical part 14a and on its toric part 14b. But experience shows that it is impossible to cut the grinding wheel so that its toric part 1a or 1b is connected exactly with its side on the one hand, with its periphery on the other hand. This is due to the fact that the diameter of the upper part 14a of the wheel cannot be strictly equal to the internal diameter of its toric part; it differs from it by a value k, that is to say that the diameter on which the centers of this toric part are found has the value d + 2r + k, r being the radius of said toric part. Similarly, it is impossible for the working part of the wiper 12 to be rigorously at a distance r from the plane containing the centers of the toroidal part 14.1 2 of the wheel; it differs by a value k '. To remedy this difficulty, it is arranged that the respective values k and k 'are always positive and the wheel is given a profile such that its toric part 14b is extended by frustoconical parts which make the same angle a respectively with the direction xx and with the direction yy, as it appears in Figure 2. The angle a which is known, must be as small as possible, of the order of 1 to 3 ° .

Dans ces conditions, l'erreur sur la longueur de la partie droite de la périphérie de la meule raccordant les deux tores est donnée par la formule :

Figure imgb0001
si a est exprimé en radian.Under these conditions, the error on the length of the straight part of the periphery of the grinding wheel connecting the two tori is given by the formula:
Figure imgb0001
 if a is expressed in radian.

Si, par exemple, on a k = 0,017 mm et a = 2°, l'erreur est approximativement de 1 millimètre. De même l'erreur ε' sur la hauteur du flanc taillé de la meule est donnée par la formule :

Figure imgb0002
If, for example, we have ak = 0.017 mm and a = 2 ° , the error is approximately 1 millimeter. Similarly the error ε 'on the height of the cut flank of the grinding wheel is given by the formula:
Figure imgb0002

La position du porte-frottoir 11 doit être déterminée avec une très grande précision qui peut être de l'ordre du micron en particulier quand le dispositif doit tailler plusieurs meules coaxiales de mêmes diamètres.The position of the wiper 11 must be determined with great precision which can be of the order of a micron, in particular when the device has to cut several coaxial grinding wheels of the same diameters.

A cet effet, dans le mode de realisation de la Figure 3, un barreau 15 en nickel ou en une autre matière subissant une variation de longueur sous l'effet d'un champ électro-magnétique, est fixé à deux cylindres de guidage 16a et 16b qui sont montés coulissants avec un jeu faible dans le chariot 4 et dont l'un est solidaire du fourreau 11. Les cylindres 16a et 16b sont plaqués dans le chariot 4 par des pistons freins 17a et 17b poussés par des rondelles élastiques 18a et 18b prenant appui sur des bouchons 19a et 19b. Les cylindres dans lesquels sont montés les pistons sont reliés à la source de pression 20 de la machine par des conduits 21a et 21b sur lesquels sont intérposés des distributeurs 22a et 22b, la pression dans l'un des cylindres ayant pour effet de reculer )e piston correspondant contre l'action de la rondelle élastique 18a ou 18b.To this end, in the embodiment of Figure 3, a bar 15 made of nickel or another material undergoing a variation in length under the effect of an electromagnetic field, is fixed to two guide cylinders 16a and 16b which are slidably mounted with a small clearance in the carriage 4 and one of which is integral with the sheath 11. The cylinders 16a and 16b are pressed into the carriage 4 by brake pistons 17a and 17b pushed by elastic washers 18a and 18b bearing on plugs 19a and 19b. The cylinders in which the pistons are mounted are connected to the pressure source 20 of the machine by conduits 21a and 21b on which distributors 22a and 22b are interposed, the pressure in one of the cylinders having the effect of reversing) e corresponding piston against the action of the elastic washer 18a or 18b.

Autour du barreau 15 est disposée une bobine 23 qui peut être alimentée en courant par l'intermédiaire d'un contacteur 24.Around the bar 15 is arranged a coil 23 which can be supplied with current via a contactor 24.

A la mise en marche du dispositif, l'électro-vanne 22a est désexcitée alors que l'électro-vanne 22jb est excitée, de sorte que seul le frein 17a est serré.When the device is started up, the solenoid valve 22a is de-energized while the solenoid valve 22 j b is energized, so that only the brake 17a is applied.

Pour faire avancer le fourreau 11 portant le frottoir 12 on procède successivement aux opérations suivantes :

  • - mise sous tension de la bobine 23, par fermeture du contacteur 24, ce qui a pour effet de produire une rétraction du barreau 15 qui entraîne le cylindre 16b;
  • - serrage du frein 17b par coupure de l'électrovanne 22b;
  • - excitation de l'électro-vanne 22a, ce qui desserre le frein 17a;
  • - coupure de l'alimentation de la bobine 23 de sorte que le barreau 15 se déplace de quelques microns vers la gauche en entraînant le cylindre 16a et le frottoir 12;
  • - serrage du frein 17a par coupure de l'alimentation de l'électro-vanne 22a;
  • - et desserrage du frein 17b par excitation de l'électro-vanne 22b.
To advance the sheath 11 carrying the scrubber 12, the following operations are carried out successively:
  • - energization of the coil 23, by closing the contactor 24, which has the effect of producing a retraction of the bar 15 which drives the cylinder 16b;
  • - application of the brake 17b by switching off the solenoid valve 22b;
  • - excitation of the solenoid valve 22a, which releases the brake 17a;
  • - Cutting the power supply to the coil 23 so that the bar 15 moves a few microns to the left, driving the cylinder 16a and the scrubber 12;
  • - application of the brake 17a by cutting off the power supply to the solenoid valve 22a;
  • - and release of the brake 17b by excitation of the solenoid valve 22b.

Pour faire reculer le frottoir 12, on opère de manière analogue mais en mettant la bobine 23 sous tension après serrage du frein 17b et desserrage du frein 17g.To roll back the rub 12, the operation is analogous but by putting the coil 23 under tension after application of the brake 17b and release of the brake 17g.

Il va de soi que la présente invention ne doit pas être considérée comme limitée au mode de réalisation décrit et représenté. Dans un autre mode de réalisation suivant l'invention on pourrait tailler en même temps plusieurs meules de même diamètre fixées coaxialement sur l'arbre 2 en prévoyant plusieurs frottoirs 12 séparés les uns des autres par un ensemble comportant une molette analogue à la molette 7a ou 7b et son moteur d'entraînement. Dans ce cas, dans un groupe de deux meules adjacentes, une même molette taille le flanc gauche et la partie torique gauche de la meule située à droite et le flanc droit et la partie torique droite de la meule située à gauche. Par ailleurs, le dispositif peut être incorporé à une rectifieuse, par exemple une rectifieuse à plongée droite, la position du ou des frottoirs étant asservie au diamètre de la meule 1 mesurée par une jauge d'autocalibrage portée par la rectifieuse.It goes without saying that the present invention should not be considered as limited to the embodiment described and shown. In another embodiment according to the invention, it would be possible to cut at the same time several grinding wheels of the same diameter fixed coaxially on the shaft 2 by providing several rubbers 12 separated from each other by an assembly comprising a wheel similar to the wheel 7a or 7b and its drive motor. In this case, in a group of two adjacent grinding wheels, the same wheel cuts the left flank and the left toric part of the grinding wheel located on the right and the right flank and the right toric part of the grinding wheel located on the left. Furthermore, the device can be incorporated into a grinding machine, for example a straight plunge grinding machine, the position of the rubbers being controlled by the diameter of the grinding wheel 1 measured by a self-calibrating gauge carried by the grinding machine.

Claims (5)

1. Device for dressing a grinding wheel (1) having its shaft (2) mounted for rotation in a frame (3), which comprises at least two diamond charged dressing rolls (7a and 7b) whose axes are parallel to each other and perpendicular to the shaft (2) of the grinding wheel and are mounted for rotation in a mobile support (4) and means for dressing the periphery of the grinding wheel, characterized in that the support (4) for the diamond charged dressing rolls is movable in a direction perpendicular to the axis of the dressing rolls so parallel to the shaft of the grinding wheel, and in that the means for dressing the periphery of the grinding wheel are formed by an abrader (12) carried by the support (4).
2. Device according to claim 1, characterized in that the abrader (12) is carried by a sleeve (11) whose position with respect to the support (4) is adjustable in the direction of the axes of the dressing rolls.
3. Device according to claim 1 or 2, characterized in that each of the dressing rolls (7a or 7b) comprises two active parts, one (14a) cylindrical in its top portion and the other (14b) having a toric shape extended by truncated-cone shaped portions which form the same angle respectively with the shaft of the grinding wheel and with a plane perpendicular to this shaft.
4. Device according to claim 3, characterized in that said angle of the truncated-cone shaped portions is between 1 and 3°.
5. Device according to one of claims 1 to 4, characterized by means sensitive to the magnetostriction of certain metals for adjusting the position of the sleeve.
EP19880400601 1987-03-16 1988-03-15 Grinding wheel dressing device Expired - Lifetime EP0283395B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8703788 1987-03-16
FR8703788A FR2612440B1 (en) 1987-03-16 1987-03-16 GRINDING DEVICE

Publications (2)

Publication Number Publication Date
EP0283395A1 EP0283395A1 (en) 1988-09-21
EP0283395B1 true EP0283395B1 (en) 1990-08-29

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DE (1) DE3860505D1 (en)
FR (1) FR2612440B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022192871A1 (en) * 2021-03-08 2022-09-15 Saint-Gobain Abrasives, Inc. Grinding wheel assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739799B3 (en) * 1995-10-11 1997-12-26 Tahay Benoit GRINDER FOR BRAKE DISC

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1128785B (en) * 1955-09-03 1962-04-26 Herbert Lindner Fa Device for the automatic dressing of profile grinding wheels
US3017875A (en) * 1957-04-17 1962-01-23 Landis Tool Co Form dressing device
GB1110423A (en) * 1963-11-08 1968-04-18 Newall Eng Improvements in or relating to dressing apparatus for grinding wheels
US3598100A (en) * 1969-03-03 1971-08-10 Gleason Works Dresser structures
JPS5141275Y2 (en) * 1972-03-08 1976-10-07
FR2405786A1 (en) * 1977-10-17 1979-05-11 Clichy Const Sa Grinding wheel truing unit - has face type diamond wheel and two complementary diamond wheels for facing and radiusing sides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022192871A1 (en) * 2021-03-08 2022-09-15 Saint-Gobain Abrasives, Inc. Grinding wheel assembly

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FR2612440A1 (en) 1988-09-23
DE3860505D1 (en) 1990-10-04
EP0283395A1 (en) 1988-09-21
FR2612440B1 (en) 1994-02-25

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