EP0495691A1 - Cylindrical grinding machine - Google Patents
Cylindrical grinding machine Download PDFInfo
- Publication number
- EP0495691A1 EP0495691A1 EP92400034A EP92400034A EP0495691A1 EP 0495691 A1 EP0495691 A1 EP 0495691A1 EP 92400034 A EP92400034 A EP 92400034A EP 92400034 A EP92400034 A EP 92400034A EP 0495691 A1 EP0495691 A1 EP 0495691A1
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- EP
- European Patent Office
- Prior art keywords
- machining
- abrasive
- axial translation
- workpieces
- parts
- 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.)
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- 238000003754 machining Methods 0.000 claims abstract description 41
- 239000004744 fabric Substances 0.000 claims abstract description 34
- 230000010355 oscillation Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 5
- 230000003534 oscillatory effect Effects 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
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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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
- B24B21/025—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces for travelling elongated stock, e.g. wire
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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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/004—Machines or devices using grinding or polishing belts; Accessories therefor using abrasive rolled strips
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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
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
Definitions
- the present invention relates to a machine for abrasive machining of cylindrical parts, comprising means for supporting and driving the parts in rotation about their axes and in axial translation, and machining means comprising several work stations. abrasive machining with grains of increasing fineness succeeding one another in the direction of axial translation of the parts and acting successively on the parts during the axial translation of the latter.
- a known machine of this type used for superfinishing machining of cylindrical parts such as shock absorber rods, cylindrical rollers, etc. comprises as a support and drive device for the rotating parts and in axial translation two rollers cooperating with the workpieces in the manner of grinding wheels without "centerless" centers in a row.
- the machining means consist of a succession of abrasive stones, the application pressures on the workpiece are continuously adjustable and different depending on the quality of the stones used.
- Each of these stones is supported by a pneumatic or hydraulic cylinder, and the cylinders (generally six, eight or ten in number) located one after the other in the direction of the axial translation that the parts effect under the effect support and drive rollers carry stones with increasingly fine grains, which makes it possible to bring a part in one pass to the desired state of super-finishing.
- This machining technique has proven itself, but requires an adaptation of the quality of the stones to the workpiece, both in terms of the hardness and the material of the workpiece. It is therefore necessary, for each type of workpiece, to choose a set of stones for machining grains of different fineness, stones which are adapted to the operation to be carried out.
- the method of manufacturing these abrasive stones does not always make it possible to obtain perfect homogeneity, in particular for so-called blown stones, a lack of homogeneity which can cause "shoeing", that is to say clogging. rocks, causing defective machining.
- the number of successive stones required to bring a piece from a determined starting state to a determined superfinishing state is relatively high.
- the present invention aims to achieve an abrasive machining machine which, while being simple in structure and reliable in operation, eliminates the risks and imponderables of known machines for machining by abrasive stones, thus ensuring more machining regular at a reduced cost.
- the machining means comprise several strips of abrasive cloth having grains of increasing fineness in the direction of axial translation of the parts.
- the machining means further comprise advancing means for unrolling each strip of abrasive cloth, during machining, continuously from a new cloth reel and rewinding it on a worn cloth reel.
- the machining means furthermore comprise support means for applying each strip of abrasive cloth with a predetermined pressure on the workpieces.
- the machining means comprise oscillation means for animating said support means with an oscillatory movement in axial translation.
- the replacement of the abrasive stones of the known machining machines by abrasive cloth strips with continuous advance movement makes it possible, for an equal or even better machining quality, to considerably reduce the number of machining stations necessary to bring parts from the same starting state to an equal or even better superfinishing state.
- the machine according to the invention provides this final state with markedly increased reliability, since the strips of abrasive cloth with continuous advance used on the machine according to the invention eliminate the drawbacks associated with the abrasive stones used on the known machines.
- the means for supporting and driving in rotation and in axial translation the workpieces comprise two rollers cooperating with the workpieces by effect without said centers. "centerless effect”.
- the means of support of the abrasive cloth strips on the workpieces preferably comprise several support rollers carried by several jacks fixed on a plate movable in axial translation under the action of oscillation control means.
- the means for advancing the abrasive cloth strips comprise a common drive system for all the spools of used cloth of the machine.
- These advancement means may preferably comprise a geared motor driving a shaft from which all the spools of used fabric are driven by means of belt transmissions.
- each abrasive machining station to include two mandrels with an inflatable elastic membrane for the pneumatic clamping and unclamping of the new abrasive canvas spool and the abrasive cloth coil worn on the two mandrels.
- the assembly 2 comprises, in a manner known per se, two cylindrical rollers 3 arranged side by side and driven in rotation so that the workpieces brought one behind the other on the two rollers, at one end of the latter, are both driven in rotation about their axis and driven in axial translation by the two rollers 3, by a centerless effect called “centerless” as it is well known for example for grinders without centers in a row.
- the spacing of the two rollers 3 is adjustable in order to adapt the support assembly 2 to workpieces of different diameters.
- the frame 1 also carries a console 4 on which are mounted several abrasive machining units 5 arranged one behind the other in the direction of axial translation of the parts to be machined on the support assembly 2 (arrow A in the figure 2).
- a plate 6 secured to the console 4 carries, for each machining unit 5, a reel 7 of reserve of new abrasive cloth and a reel 8 of worn abrasive cloth.
- the winding coils 8 are driven by a geared motor 9 installed on the column 4 by means of belt transmission 10.
- the column 4 also carries a plate 11 on which is mounted movable in horizontal translation, by slides 12, a plate 13 carrying several cylinders 14.
- Each cylinder 14 carries, at the lower end of its piston rod, a roller d 'support 15 rotatably mounted in a yoke 16 (see Figures 3 and 4).
- a strip of abrasive cloth 17 runs from each reserve reel 7 to the corresponding winding reel 8 by passing over a support roller 15.
- the plate 13 is coupled by a connecting rod 18 with an eccentric 19 driven by a motor 20.
- each winding reel 8 driven by a belt transmission 10 and each reserve reel 7 is mounted on a mandrel 22 carrying an elastic membrane 23 inflatable by means of compressed air arriving via a rotary joint 24 at the mandrel 22 rotatably mounted by bearings 25.
- the jack 14 of the first machining unit 5 is controlled so that the abrasive cloth of this first unit is applied by the pressure roller 15 of this jack 14 against the workpiece.
- the workpiece is rotated about its axis and in axial translation, which causes it to pass successively in contact with the abrasive cloths of other machining units 5. Since the strips of abrasive cloth, of increasing fineness, successive machining units 5 are continuously driven during machining, the successive parts are all subjected to identical machining conditions, hence obtaining parts of uniform quality.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Machine d'usinage par abrasif de pièces cylindriques, sur laquelle les pièces à usiner sont entrainées en rotation et en translation axiale par des moyens de support et d'entrainement. La machine comprend plusieurs bandes (17) de toile abrasive ayant des grains de finesse croissante dans le sens de translation axiale (A) des pièces à usiner, des moyens d'avancement pour dérouler chaque bande (17), pendant l'usinage, en continu d'une bobine de toile neuve et la réenrouler sur une bobine de toile usée, des moyens d'appui pour appliquer chaque bande (17) avec une pression prédéterminée sur les pièces à usiner, et des moyens d'oscillation (18, 19, 20) pour animer lesdits moyens d'appui d'un mouvement oscillatoire en translation axiale. Application : par exemple à la superfinition de tiges d'amortisseurs, de galets cylindriques, etc. <IMAGE>Abrasive machining machine for cylindrical parts, on which the workpieces are driven in rotation and in axial translation by support and drive means. The machine comprises several strips (17) of abrasive cloth having grains of increasing fineness in the direction of axial translation (A) of the workpieces, advancement means for unwinding each strip (17), during machining, in continuous of a new canvas spool and rewinding it on a worn canvas spool, support means for applying each strip (17) with a predetermined pressure on the workpieces, and oscillation means (18, 19 , 20) to animate said support means with an oscillating movement in axial translation. Application: for example to the superfinishing of shock absorber rods, cylindrical rollers, etc. <IMAGE>
Description
La présente invention se rapporte à une machine d'usinage par abrasif de pièces cylindriques, comprenant des moyens de support et d'entrainement des pièces en rotation autour de leurs axes et en translation axiale, et des moyens d'usinage comprenant plusieurs postes d'usinage par abrasif avec des grains de finesse croissante se succédant dans le sens de translation axiale des pièces et agissant successivement sur les pièces pendant la translation axiale de ces dernières.The present invention relates to a machine for abrasive machining of cylindrical parts, comprising means for supporting and driving the parts in rotation about their axes and in axial translation, and machining means comprising several work stations. abrasive machining with grains of increasing fineness succeeding one another in the direction of axial translation of the parts and acting successively on the parts during the axial translation of the latter.
Une machine connue de ce type utilisée pour l'usinage de superfinition de pièces cylindriques telles que des tiges d'amortisseurs, des galets cylindriques, etc. comprend comme dispositif de support et d'entrainement des pièces en rotation et en translation axiale deux rouleaux coopérant avec les pièces à usiner à la manière des meules de rectification sans centres "centerless" en enfilade. Les moyens d'usinage sont constitués par une succession de pierres abrasives dont les pressions d'application sur la pièce à usiner sont réglables en continu et différentes suivant la qualité des pierres utilisées. Chacune de ces pierres est supportée par un vérin pneumatique ou hydraulique, et les vérins (généralement au nombre de six, huit ou dix) situés les uns à la suite des autres dans la direction de la translation axiale que les pièces effectuent sous l'effet des rouleaux de support et d'entrainement portent des pierres à grains de plus en plus fins, ce qui permet d'amener une pièce en une passe à l'état de superfinition recherché.A known machine of this type used for superfinishing machining of cylindrical parts such as shock absorber rods, cylindrical rollers, etc. comprises as a support and drive device for the rotating parts and in axial translation two rollers cooperating with the workpieces in the manner of grinding wheels without "centerless" centers in a row. The machining means consist of a succession of abrasive stones, the application pressures on the workpiece are continuously adjustable and different depending on the quality of the stones used. Each of these stones is supported by a pneumatic or hydraulic cylinder, and the cylinders (generally six, eight or ten in number) located one after the other in the direction of the axial translation that the parts effect under the effect support and drive rollers carry stones with increasingly fine grains, which makes it possible to bring a part in one pass to the desired state of super-finishing.
Cette technique d'usinage a fait ses preuves, mais demande une adaptation de la qualité des pierres à la pièce à usiner, tant du point de la dureté que de la matière de la pièce à usiner. Il est donc nécessaire, pour chaque type de pièces à usiner, de choisir un ensemble de pierres d'usinage de grains de finesses différentes, pierres qui soient adaptées à l'opération à réaliser. En outre, le mode de fabrication de ces pierres abrasives ne permet pas toujours d'obtenir une parfaite homogénéité, en particulier pour les pierres dites souffrées, un défaut d'homogénéité pouvant provoquer un "ferrage" c'est-à-dire un colmatage des pierres, provoquant un usinage défectueux. De plus, le nombre de pierres successives nécessaires pour amener une pièce d'un état de départ déterminé à un état de superfinition déterminé est relativement élevé.This machining technique has proven itself, but requires an adaptation of the quality of the stones to the workpiece, both in terms of the hardness and the material of the workpiece. It is therefore necessary, for each type of workpiece, to choose a set of stones for machining grains of different fineness, stones which are adapted to the operation to be carried out. In addition, the method of manufacturing these abrasive stones does not always make it possible to obtain perfect homogeneity, in particular for so-called blown stones, a lack of homogeneity which can cause "shoeing", that is to say clogging. rocks, causing defective machining. In addition, the number of successive stones required to bring a piece from a determined starting state to a determined superfinishing state is relatively high.
La présente invention a pour but de réaliser une machine d'usinage par abrasif qui, tout en étant de structure simple et d'un fonctionnement fiable, élimine les risques et impondérables des machines connues d'usinage par pierres abrasives, assurant ainsi un usinage plus régulier à un coût réduit.The present invention aims to achieve an abrasive machining machine which, while being simple in structure and reliable in operation, eliminates the risks and imponderables of known machines for machining by abrasive stones, thus ensuring more machining regular at a reduced cost.
Sur la machine conforme à l'invention d'usinage par abrasif de pièces cylindriques, sur laquelle les pièces à usiner sont entraînées en rotation et en translation axiale par des moyens de support et d'entraînement, les moyens d'usinage comprennent plusieurs bandes de toile abrasive ayant des grains de finesse croissante dans le sens de translation axiale des pièces. Les moyens d'usinage comprennent, en outre, des moyens d'avancement pour dérouler chaque bande de toile abrasive, pendant l'usinage, en continu d'une bobine de toile neuve et la réenrouler sur une bobine de toile usée. Les moyens d'usinage comprennent, par ailleurs, des moyens d'appui pour appliquer chaque bande de toile abrasive avec une pression prédéterminée sur les pièces à usiner. Enfin, les moyens d'usinage comprennent des moyens d'oscillation pour animer lesdits moyens d'appui d'un mouvement oscillatoire en translation axiale.On the machine according to the invention for abrasive machining of cylindrical parts, on which the workpieces are driven in rotation and in axial translation by support and drive means, the machining means comprise several strips of abrasive cloth having grains of increasing fineness in the direction of axial translation of the parts. The machining means further comprise advancing means for unrolling each strip of abrasive cloth, during machining, continuously from a new cloth reel and rewinding it on a worn cloth reel. The machining means furthermore comprise support means for applying each strip of abrasive cloth with a predetermined pressure on the workpieces. Finally, the machining means comprise oscillation means for animating said support means with an oscillatory movement in axial translation.
Le remplacement des pierres abrasives des machines d'usinage connues par des bandes de toile abrasive à mouvement d'avance continu permet, pour une qualité d'usinage égale, voire meilleure, de réduire considérablement le nombre de postes d'usinage nécessaires pour amener des pièces d'un même état de départ à un état de superfinition égal, voire meilleur. De plus, la machine conforme à l'invention procure cet état final avec une fiabilité nettement accrue, du fait que les bandes de toile abrasive à avance continue utilisées sur la machine conforme à l'invention éliminent les inconvénients liés aux pierres abrasives utilisées sur les machines connues.The replacement of the abrasive stones of the known machining machines by abrasive cloth strips with continuous advance movement makes it possible, for an equal or even better machining quality, to considerably reduce the number of machining stations necessary to bring parts from the same starting state to an equal or even better superfinishing state. In addition, the machine according to the invention provides this final state with markedly increased reliability, since the strips of abrasive cloth with continuous advance used on the machine according to the invention eliminate the drawbacks associated with the abrasive stones used on the known machines.
De préférence, les moyens de support et d'entraînement en rotation et en translation axiale des pièces à usiner comprennent deux rouleaux coopérant avec les pièces à usiner par effet sans centres dit "effet centerless".Preferably, the means for supporting and driving in rotation and in axial translation the workpieces comprise two rollers cooperating with the workpieces by effect without said centers. "centerless effect".
Les moyens d'appui des bandes de toile abrasive sur les pièces à usiner comprennent de préférence plusieurs rouleaux d'appui portés par plusieurs vérins fixés sur une platine mobile en translation axiale sous l'action de moyens de commande d'oscillation.The means of support of the abrasive cloth strips on the workpieces preferably comprise several support rollers carried by several jacks fixed on a plate movable in axial translation under the action of oscillation control means.
Ainsi, seuls les vérins et les rouleaux d'appui portés par ces vérins sont animés d'un mouvement oscillatoire nécessaire, comme cela est bien connu, pour donner aux pièces l'état de surface requis, tandis que les bobines de toile neuve et les bobines de toile usée ainsi que les moyens d'avancement des bandes de toile abrasive sont fixes. Malgré cela les bandes de toile abrasive peuvent suivre sans difficulté, dans leur partie située entre les bobines de toile neuve et les bobines de toile usée, les mouvements oscillatoires d'amplitude réduite des rouleaux d'appui.Thus, only the jacks and the support rollers carried by these jacks are driven by a necessary oscillatory movement, as is well known, to give the parts the required surface condition, while the coils of new canvas and the spools of used canvas as well as the means for advancing the abrasive cloth strips are fixed. Despite this, the abrasive cloth strips can easily follow, in their part located between the new cloth coils and the worn cloth coils, the oscillatory movements of reduced amplitude of the support rollers.
De préférence, les moyens d'avancement des bandes de toile abrasive comprennent un système d'entraînement commun de toutes les bobines de toile usée de la machine.Preferably, the means for advancing the abrasive cloth strips comprise a common drive system for all the spools of used cloth of the machine.
Ces moyens d'avancement peuvent comprendre de préférence un motoréducteur entrainant un arbre à partir duquel toutes les bobines de toile usée sont entrainées par l'intermédiaire de transmissions à courroie.These advancement means may preferably comprise a geared motor driving a shaft from which all the spools of used fabric are driven by means of belt transmissions.
Pour simplifier le remplacement des bobines de toile neuve et des bobines de toile usée, il est avantageux que chaque poste d'usinage par abrasif comprenne deux mandrins à membrane élastique gonflable en vue du bridag et débridage pneumatique de la bobine de toile abrasive neuve et de la bobine de toile abrasive usée sur les deux mandrins.To simplify the replacement of new canvas spools and used canvas spools, it is advantageous for each abrasive machining station to include two mandrels with an inflatable elastic membrane for the pneumatic clamping and unclamping of the new abrasive canvas spool and the abrasive cloth coil worn on the two mandrels.
En se référant aux dessins schématiques annexés, on va décrire ci-après plus en détail un mode de réalisation illustratif et non limitatif d'une machine conforme à l'invention; sur les dessins :
- la figure 1 est une vue de côté et la figure 2 une vue de face d'une machie d'usinage conforme à l'invention à trois postes d'usinage;
- la figure 3 est une vue de face de la platine mobile portant les vérins de commande des rouleaux d'appui ainsi que la commande d'oscillation de cette platine;
- la figure 4 est une coupe suivant IV-IV de la figure 3;
- la figure 5 est une vue schématique de la cinématique du système d'avancement continu des bandes de toile abrasive;
- la figure 6 représente les mandrins à membrane gonflable pour le bridage de la bobine de toile neuve et de la bobine de toile usée d'un poste d'usinage.
- Figure 1 is a side view and Figure 2 a front view of a machining tool according to the invention at three machining stations;
- Figure 3 is a front view of the movable plate carrying the control cylinders of the support rollers and the oscillation control of this plate;
- Figure 4 is a section along IV-IV of Figure 3;
- Figure 5 is a schematic view of the kinematics of the continuous advancement system of the abrasive cloth strips;
- FIG. 6 shows the mandrels with an inflatable membrane for clamping the new canvas spool and the worn canvas spool of a machining station.
Tel qu'illustrée par les figures 1 et 2, une machine conforme à l'invention pour l'usinage par abrasif de pièces cylindriques, par exemple la superfinition de tiges d'amortisseurs ou de galets cylindriques comprend, sur un bâti 1 fixe, un ensemble 2 de support et d'entrainement en rotation et en translation axiale des pièces à usiner non représentées. L'ensemble 2 comprend, de façon connue en soi, deux rouleaux cylindriques 3 disposés côte à côte et entrainés en rotation de telle manière que les pièces à usiner amenées les unes derrière les autres sur les deux rouleaux, à une extrémité de ces derniers, soient à la fois entrainées en rotation autour de leur axe et entrainées en translation axiale par les deux rouleaux 3, par un effet sans centres dit "centerless" tel qu'il est bien connu par exemple pour les rectifieuses sans centres en enfilade.As illustrated in FIGS. 1 and 2, a machine according to the invention for the abrasive machining of cylindrical parts, for example the superfinishing of damper rods or cylindrical rollers comprises, on a
L'écartement des deux rouleaux 3 est réglable en vue de l'adaptation de l'ensemble de support 2 à des pièces à usiner de diamètres différents.The spacing of the two
Le bâti 1 porte par ailleurs une console 4 sur laquelle sont montées plusieurs unités d'usinage par abrasif 5 disposées les unes derrière les autres dans le sens de translation axiale des pièces à usiner sur l'ensemble de support 2 (flèche A sur la figure 2).The
Une platine 6 solidaire de la console 4 porte, pour chaque unité d'usinage 5, une bobine 7 de réserve de toile abrasive neuve et une bobine de renvidage 8 de toile abrasive usée. Les bobines de renvidage 8 sont entrainées par un motoréducteur 9 installé sur la colonne 4 par l'intermédiaire de transmission à courroie 10.A
La colonne 4 porte par ailleurs une platine 11 sur laquelle est montée mobile en translation horizontale, par des glissières 12, une platine 13 portant plusieurs vérins 14. Chaque vérin 14 porte, à l'extrémité inférieure de sa tige de piston, un rouleau d'appui 15 monté en rotation dans une chape 16 (voir figures 3 et 4).The
Tel que cela apparaît notamment sur les figures 1 et 2, une bande de toile abrasive 17 va de chaque bobine de réserve 7 à la bobine de renvidage 8 correspondante en passant sur un rouleau d'appui 15.As shown in particular in FIGS. 1 and 2, a strip of
La platine 13 est couplée par une bielle 18 avec un excentrique 19 entrainé par un moteur 20.The
Sur le schéma de la figure 5, on reconnaît que toutes les transmissions à courroie 10 qui entrainent les bobines 8 de renvidage de toile abrasive en vue de l'avancement continu des toiles 17 retirées des bobines de réserve 7 sont commandées par le motoréducteur 9 par l'intermédiaire d'un arbre 21 commun.In the diagram of FIG. 5, it can be recognized that all the
Selon la figure, chaque bobine de renvidage 8 entrainée par une transmission à courroie 10 et chaque bobine de réserve 7 est montée sur un mandrin 22 portant une membrane 23 élastique gonflable à l'aide d'air comprimé arrivant par un joint tournant 24 au mandrin 22 monté en rotation par des roulements 25.According to the figure, each
Lorsqu'un pièce amenée par exemple par un transporteur arrive sur les rouleaux 3 à l'extrémité de gauche sur la figure 2, le vérin 14 de la première unité d'usinage 5 est commandé de manière que la toile abrasive de cette première unité soit appliquée par le rouleau de pression 15 de ce vérin 14 contre la pièce à usiner. Par l'effet dit sans centre, la pièce à usiner est entrainée en rotation autour de son axe et en translation axiale, ce qui la fait passer successivement au contact des toiles abrasives des autres unités d'usinage 5. Etant donné que les bandes de toile abrasive, de finesse croissante, des unités d'usinage 5 successives sont entrainées en continu pendant l'usinage, les pièces successives sont toutes soumises à des conditions d'usinage identiques, d'où l'obtention de pièces de qualité uniforme.When a part brought for example by a conveyor arrives on the
Bien entendu, le mode de réalisation décrit ci-dessus et illustré par les dessins annexés n'a été donné qu'à titre d'exemple indicatif et non limitatif et de nombreuses modifications et variantes sont possibles dans le cadre de l'invention. Ainsi, le nombre des unités d'usinage successives sur une même machine peut être différent de trois, ce nombre pouvant être augmenté en fonction de la qualité exigée des pièces usinées.Of course, the embodiment described above and illustrated by the accompanying drawings has been given only by way of an indicative and non-limiting example and numerous modifications and variants are possible within the scope of the invention. Thus, the number of successive machining units on the same machine can be different from three, this number can be increased depending on the quality required of the machined parts.
Par ailleurs, pour le changement des bobines de réserve et des bobines de renvidage, il est possible d'utiliser d'autres moyens que des mandrins à membrane gonflable.In addition, for changing the reserve coils and the winding reels, it is possible to use other means than mandrels with an inflatable membrane.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9100296 | 1991-01-11 | ||
| FR9100296A FR2671504B1 (en) | 1991-01-11 | 1991-01-11 | MACHINE FOR ABRASIVE MACHINING OF CYLINDRICAL PARTS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0495691A1 true EP0495691A1 (en) | 1992-07-22 |
| EP0495691B1 EP0495691B1 (en) | 1995-11-02 |
Family
ID=9408613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92400034A Expired - Lifetime EP0495691B1 (en) | 1991-01-11 | 1992-01-08 | Cylindrical grinding machine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5224300A (en) |
| EP (1) | EP0495691B1 (en) |
| JP (1) | JPH06278004A (en) |
| AT (1) | ATE129657T1 (en) |
| DE (1) | DE69205693T2 (en) |
| ES (1) | ES2078672T3 (en) |
| FR (1) | FR2671504B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896856A1 (en) * | 1997-08-12 | 1999-02-17 | Société des Procédés et Machines Speciales | Machine tool especially for superfinishing of cylindrical surfaces of revolution by means of a tangential running grinding belt |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE159445T1 (en) * | 1991-11-30 | 1997-11-15 | Sony Corp | GRINDING MACHINE FOR GRINDING EMBOSSING DIES FOR PRODUCING PRESSED DISCS |
| CN1124472A (en) * | 1993-05-26 | 1996-06-12 | 美国3M公司 | Method of providing a smooth surface on a substrate |
| US5951377A (en) * | 1996-08-01 | 1999-09-14 | Radtec, Inc. | Microfinishing machine |
| DE19756610A1 (en) * | 1997-12-18 | 1999-07-01 | Junker Erwin Maschf Gmbh | Method and device for grinding workpieces with time-parallel fine machining |
| US6299512B1 (en) * | 1999-05-13 | 2001-10-09 | Alessandro Costa | Belt sander with orbitally translated abrasive belt |
| US6089958A (en) * | 1999-05-13 | 2000-07-18 | Costa; Alessandro | Belt sander with orbitally translated abrasive belt |
| US6135861A (en) * | 1999-11-01 | 2000-10-24 | Dana Corporation | Shaft polishing method and a shaft produced thereby |
| US6629875B2 (en) * | 2000-01-28 | 2003-10-07 | Accretech Usa, Inc. | Machine for grinding-polishing of a water edge |
| US6468140B1 (en) * | 2000-08-14 | 2002-10-22 | Chun-Hsiang Wang | Swinging device for a sanding machine |
| DE102007061404A1 (en) * | 2007-12-12 | 2009-06-18 | Nagel Maschinen- Und Werkzeugfabrik Gmbh | Workholding device for device for super finishing rotationally symmetric work piece in centerless continuous process, has pair of bearer drums for receiving workpiece in receiving slot |
| KR100840413B1 (en) * | 2008-03-25 | 2008-06-23 | 최영국 | Polishing system |
| CN105619213B (en) * | 2016-01-07 | 2017-09-12 | 温州大学激光与光电智能制造研究院 | A kind of automatic polishing system for cylindrical work |
| KR101695679B1 (en) | 2016-03-25 | 2017-01-12 | 이문섭 | cylinder type grinding apparatus using proximity sensor and electric clutch and timer and the method thereof |
| JP2019091746A (en) * | 2017-11-13 | 2019-06-13 | 株式会社荏原製作所 | Device and method for substrate surface treatment |
| CN113601286A (en) * | 2021-08-07 | 2021-11-05 | 湖南大学 | Vibration-assisted centerless grinding device |
| CN115816244B (en) * | 2022-12-31 | 2023-10-10 | 徐州汉裕铝业股份有限公司 | Generator guard plate grinding device |
| CN116214339B (en) * | 2023-02-28 | 2023-10-20 | 肇庆高峰机械科技有限公司 | High-precision numerical control verticality grinding machine |
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| GB656686A (en) * | 1948-02-10 | 1951-08-29 | J M Nash Company | Improvements in method and apparatus for smoothing and polishing workpieces |
| US2756547A (en) * | 1955-03-03 | 1956-07-31 | Harold A Rippl | Machine for grinding and polishing round bars |
| US3041792A (en) * | 1959-09-14 | 1962-07-03 | Norton Co | Lapping machine |
| FR2003866A1 (en) * | 1968-03-14 | 1969-11-14 | Daimler Benz Ag | |
| DE2331068A1 (en) * | 1973-06-19 | 1975-01-16 | Greif Werk Gmbh Fuer Schleif U | Centreless grinding using belt grinding machine or polisher - has cork or plastic counter pressure or drive roller with belt tensioning arm |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US413786A (en) * | 1889-10-29 | Sandpapering-machine | ||
| US2119862A (en) * | 1937-11-13 | 1938-06-07 | Black Rock Mfg Company | Roller polishing machine |
| US2258733A (en) * | 1940-08-30 | 1941-10-14 | Gen Motors Corp | Sanding machine |
| US3040483A (en) * | 1960-05-25 | 1962-06-26 | William B Jaspert | Renewable bearing supports |
| CH610418A5 (en) * | 1975-11-08 | 1979-04-12 | Hell Rudolf Dr Ing Gmbh | |
| US4796387A (en) * | 1987-11-19 | 1989-01-10 | Johnson James N | Micro-abrasive finishing device |
| DE58905593D1 (en) * | 1988-06-21 | 1993-10-21 | Supfina Maschf Hentzen | Automatic centerless fine machining device for surface rotationally symmetrical bodies in a continuous machine. |
-
1991
- 1991-01-11 FR FR9100296A patent/FR2671504B1/en not_active Expired - Fee Related
-
1992
- 1992-01-08 DE DE69205693T patent/DE69205693T2/en not_active Expired - Fee Related
- 1992-01-08 ES ES92400034T patent/ES2078672T3/en not_active Expired - Lifetime
- 1992-01-08 EP EP92400034A patent/EP0495691B1/en not_active Expired - Lifetime
- 1992-01-08 AT AT92400034T patent/ATE129657T1/en not_active IP Right Cessation
- 1992-01-09 US US07/819,343 patent/US5224300A/en not_active Expired - Lifetime
- 1992-01-10 JP JP4003001A patent/JPH06278004A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB656686A (en) * | 1948-02-10 | 1951-08-29 | J M Nash Company | Improvements in method and apparatus for smoothing and polishing workpieces |
| US2756547A (en) * | 1955-03-03 | 1956-07-31 | Harold A Rippl | Machine for grinding and polishing round bars |
| US3041792A (en) * | 1959-09-14 | 1962-07-03 | Norton Co | Lapping machine |
| FR2003866A1 (en) * | 1968-03-14 | 1969-11-14 | Daimler Benz Ag | |
| DE2331068A1 (en) * | 1973-06-19 | 1975-01-16 | Greif Werk Gmbh Fuer Schleif U | Centreless grinding using belt grinding machine or polisher - has cork or plastic counter pressure or drive roller with belt tensioning arm |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896856A1 (en) * | 1997-08-12 | 1999-02-17 | Société des Procédés et Machines Speciales | Machine tool especially for superfinishing of cylindrical surfaces of revolution by means of a tangential running grinding belt |
| FR2767275A1 (en) * | 1997-08-12 | 1999-02-19 | Soc D Procedes Et Machines Spe | MACHINE FOR MACHINING, PARTICULARLY SUPERFINITION, OF CYLINDRICAL SURFACES OF PARTS OF REVOLUTION, BY ABRASIVE BELT WITH TANGENTIAL SCROLLING |
| US6572459B2 (en) | 1997-08-12 | 2003-06-03 | Societe Des Procedes Et Machines Speciales | Machine for machining in particular superfinishing, cylindrical surfaces of circular cylindrical workpieces, using an abrasive belt moving tangentially |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2078672T3 (en) | 1995-12-16 |
| FR2671504B1 (en) | 1993-04-30 |
| DE69205693T2 (en) | 1996-05-30 |
| JPH06278004A (en) | 1994-10-04 |
| EP0495691B1 (en) | 1995-11-02 |
| ATE129657T1 (en) | 1995-11-15 |
| DE69205693D1 (en) | 1995-12-07 |
| US5224300A (en) | 1993-07-06 |
| FR2671504A1 (en) | 1992-07-17 |
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