EP0237439B1 - Device for axially holding a roll - Google Patents

Device for axially holding a roll Download PDF

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Publication number
EP0237439B1
EP0237439B1 EP87400554A EP87400554A EP0237439B1 EP 0237439 B1 EP0237439 B1 EP 0237439B1 EP 87400554 A EP87400554 A EP 87400554A EP 87400554 A EP87400554 A EP 87400554A EP 0237439 B1 EP0237439 B1 EP 0237439B1
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EP
European Patent Office
Prior art keywords
roller
bearing
axis
rotation
recess
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EP87400554A
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German (de)
French (fr)
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EP0237439A1 (en
Inventor
René Paulhac
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Clecim SAS
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Clecim SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/008—Rollers for roller conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the subject of the invention is a device for axially holding a roller mounted to rotate about its axis in a fixed frame.
  • rollers In certain applications, for example in devices for continuously planing metal strips, rollers are used which rotate about an axis but which cannot, for various reasons, be fixed on bearings intended to hold them in position, because they must have a degree of freedom in the axial direction and simply be kept radially in their working position.
  • Such a roller is therefore mounted in abutment on rollers or on a support roller and its rotation shaft is equipped at its ends with axial support stops which come into contact, either in one direction or in the other with support plates mounted on the support frame, according to the axial stresses of variable direction which are exerted in service.
  • each support stop consists of a ball mounted at one end of the rotation shaft of the roller and capable of being supported on a wear plate of suitable shape mounted at the desired location on the frame.
  • the ball turns with the roller when it is not in contact but is stopped in a very short time when it comes into contact with the wear plate. It is therefore fixed on a support rotatably mounted around the axis of rotation, at the end of the shaft.
  • the devices used for this purpose so far, give satisfaction up to speeds of about 3500 rpm.
  • the subject of the invention is a new axial holding device, making it possible, thanks to a particular arrangement, to reduce the inertia of the rotating parts and to provide support by a ball of small diameter by reducing the heating produced by friction during contacts with support plates and therefore operate at very high speeds of rotation.
  • the support ball is crimped at the end of a support piece consisting of a nozzle limited laterally by a cylindrical face comprising a delimiting shoulder, side of the roller, a base with an enlarged section placed inside a housing formed at the end of the roller and limited, on the side of the roller, by a transverse bottom and, on its periphery, by a cylindrical side wall, said enlarged base bearing, in the axial direction on the bottom of the housing, by means of an axial stop and in the transverse direction, on the lateral wall of the housing, by means of a centering bearing of the end piece on the axis of rotation, the assembly being held by a housing closure cap, fixed to the side wall of the latter and comprising a flat bottom pierced with an orifice for passage of the end piece and bearing, in the axial direction, on the ep aulement of the lateral face of the nozzle.
  • the centering bearing of the enlarged base on the side wall of the housing is a needle bearing.
  • the roller not being held by bearings but by radial support, generally on another roller, its axis of rotation can be caused to move slightly parallel to itself, inside the fixed frame , due to wear of the outer casing of the roller.
  • the roller support ball may no longer be centered relative to the wear part placed on the frame.
  • the device comprises means for adjusting the position of the wearing part on the frame, as a function of the position of the axis of rotation.
  • This adjustment means can advantageously consist of a part for holding the wearing part, slidingly mounted in the direction of movement of the axis of rotation, in a groove formed on the frame, and capable of being fixed in position adjustable along the groove, by means of a removable fixing member.
  • Fig. 1 there is shown schematically the end of a roller 1 rotatably mounted around its axis 10 on a frame 2.
  • the roller 1 can for example be a flatness roller over which passes at high speed, a metal strip 11. It is held radially in a conventional manner, by means not shown, for example support rollers distributed regularly around its axis or else a support roller placed on the side opposite to the sheet 11.
  • the roller 1 is provided with a contact ball 3 which, depending on the axial stresses applied to the roller, can come to bear on a wearing part 4, mounted on the frame 2.
  • the contact ball 3 is crimped at the end of a support piece 5 consisting of an end piece 51, extended on the side of the roller, by an enlarged base 52.
  • the end piece 51 and the base 52 are limited by the faces lateral cylindrical centers on the same axis 50 which is aligned with the axis 10 of rotation of the roller.
  • the base 52 has a diameter greater than that of the end piece 51, so as to provide, between their lateral faces, a shoulder 53.
  • the enlarged base 52 fits inside a housing bounded laterally by a cylindrical wall 61 and, on the side of the roller, by a bottom 62 transverse to the axis.
  • the housing 6 is formed in a part 63 forming the body of the axial stop and fixed by a screw 64 at the end of the roller, so that the axis 60 of the bowl 6 coincides with the axis 10 of the roller.
  • the base 52 of the support piece 5 is held in the housing 6, on the one hand, radially by a centering bearing 65 interposed between the internal face 61 of the bowl 6 and the lateral face of the base 52, and on the other hand, axially, by an axial stop 66 interposed between the end face 54 of the base 52 and the bottom 62 of the bowl 6.
  • the shoulder 53 is substantially in the plane of the end of the cylindrical side wall 61 of the housing.
  • the assembly is held by a housing closure cap 7 comprising a socket 71 provided with an internal thread which is screwed onto a corresponding thread 67 formed on the side wall (61) of the housing (6).
  • the cap 7 is closed by a flat bottom 73, pierced with an orifice for the passage of the end piece 50 and which is supported on the shoulder 53, so as to hold the base 52 in place inside the housing .
  • the orifice for passage of the end piece 51 is constituted by a bore formed in the axis of a cylindrical sleeve 74 which extends the cap 7, substantially up to the end of the end piece, this- ci being threaded in the axial bore without however being tightened, so that the sleeve 74 constitutes a smooth bearing cooperating with the bearing 65 to keep the axis 50 of the ball aligned with the axis 10 of the roller, without prohibiting a rotation of the nozzle 51 relative to the sleeve 74.
  • the wear plate 4 is mounted in a support piece 41 which comprises a U-shaped extension 42 which is placed below the sleeve 74.
  • the extension 42 thus serves to support the roller 1 in the event of stop, for example, during disassembly.
  • the support piece 41 can be fixed in an adjustable position on the frame 2.
  • the support piece 41 is provided with a tail 43 which is threaded through an oblong hole or a groove 21 formed in the frame 2 and allowing the tail 43 to slide, in a direction parallel to the direction of support of the roller 1 on its support.
  • the support piece 41 is fixed to the frame 2 by a shoulder 45 and a washer 46 tightened by a bolt 47. In this way, in the event of wear of the roller 1 determining a slight displacement of its axis 10, it is possible to move the support piece 41, and consequently, the wear plate 4 so that the contact ball 3 remains perfectly centered on the wear plate 4.
  • the rotating part of the stop on which the ball 3 is fixed is simply constituted by the support part 5 which has a very reduced inertia.
  • the support piece 5 and the ball 3 also rotate around the axis 10.
  • the rotation of the support piece 5 and the ball 3 can be stopped in a very short time due to the low inertia of the support piece, centered by the bearing 65 and bearing on the axial stop 66.
  • the low inertia of all the rotating parts and the low contact between the ball 3 of small diameter and the wear plate 4 make it possible to reduce the heat energy produced by friction when the ball 3 comes to bear on the wear plate 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rolling Contact Bearings (AREA)

Description

L'invention a pour objet un dispositif de maintien axial d'un rouleau monté rotatif autour de son axe dans un bâti fixe.The subject of the invention is a device for axially holding a roller mounted to rotate about its axis in a fixed frame.

Dans certaines applications, par exemple dans les dispositifs de planage en continu de bandes métalliques, on utilise des rouleaux tournant autour d'un axe mais ne pouvant pas, pour diverses raisons, être fixés sur des paliers destinés à les maintenir en position, car ils doivent avoir un degré de liberté dans le sens axial et être simplement maintenus radialement dans leur position de travail. Un tel rouleau est donc monté en appui sur des galets ou sur un rouleau de support et son arbre de rotation est équipé à ses extrémités de butées d'appui axial qui entrent en contact, soit dans un sens, soit dans l'autre avec des plaques d'appui montées sur le bâti de support, en fonction des sollicitations axiales de sens variable qui s'exercent en service. Normalement, chaque butée d'appui est constituée d'une bille montée à une extrémité de l'arbre de rotation du rouleau et susceptible de prendre appui sur une plaque d'usure de forme appropriée montée à l'endroit voulu sur le bâti. La bille tourne avec le rouleau lorsqu'elle n'est pas en appui mais est stoppée en un temps très court lorsqu'elle vient en contact avec la plaque d'usure. Elle est donc fixée sur un support monté rotatif autour de l'axe de rotation, à l'extrémité de l'arbre. Les dispositifs utilisés à cet effet jusqu'à présent, donnent satisfaction jusqu'à des vitesses d'environ 3500 t/mn. Cependant, on est amené maintenant à envisager des vitesses de rotation beaucoup plus grandes, de l'ordre de 10 à 12.000 t/mn et l'inertie du support tournant est alors trop importante pour lui permettrel dans de bonnes conditions, d'arrêter sa rotation lorsque la bille vient en contact avec le bâti.In certain applications, for example in devices for continuously planing metal strips, rollers are used which rotate about an axis but which cannot, for various reasons, be fixed on bearings intended to hold them in position, because they must have a degree of freedom in the axial direction and simply be kept radially in their working position. Such a roller is therefore mounted in abutment on rollers or on a support roller and its rotation shaft is equipped at its ends with axial support stops which come into contact, either in one direction or in the other with support plates mounted on the support frame, according to the axial stresses of variable direction which are exerted in service. Normally, each support stop consists of a ball mounted at one end of the rotation shaft of the roller and capable of being supported on a wear plate of suitable shape mounted at the desired location on the frame. The ball turns with the roller when it is not in contact but is stopped in a very short time when it comes into contact with the wear plate. It is therefore fixed on a support rotatably mounted around the axis of rotation, at the end of the shaft. The devices used for this purpose so far, give satisfaction up to speeds of about 3500 rpm. However, we are now led to consider much higher rotational speeds, of the order of 10 to 12,000 rpm and the inertia of the rotating support is then too great to allow it to stop under good conditions. rotation when the ball comes into contact with the frame.

L'invention a pour objet un nouveau dispositif de maintien axial, permettant, grâce à un montage particulier de réduire l'inertie des parties tournantes et de réaliser l'appui par une bille de petit diamètre en diminuant l'échauffement produit par frottement lors des contacts avec des plaques d'appui et donc de fonctionner à des vitesses de rotation très importantes.The subject of the invention is a new axial holding device, making it possible, thanks to a particular arrangement, to reduce the inertia of the rotating parts and to provide support by a ball of small diameter by reducing the heating produced by friction during contacts with support plates and therefore operate at very high speeds of rotation.

Conformément à l'invention, à chaque extrémité de l'arbre du rouleau, la bille d'appui est sertie à l'extrémité d'une pièce de support constituée d'un embout limité latéralement par une face cylindrique comprenant un épaulement délimitant, du côté du rouleau , une base à section élargie placée à l'intérieur d'un logement ménagé à l'extrémité du rouleau et limité, du côté du rouleau, par un fond transversal et, sur sa périphérie , par une paroi latérale cylindrique, ladite base élargie prenant appui, dans le sens axial sur le fond du logement , par l'intermédiaire d'une butée axiale et dans le sens transversal, sur la paroi latérale du logement, par l'intermédiaire d'un roulement de centrage de l'embout sur l'axe de rotation, l'ensemble étant maintenu par un chapeau de fermeture du logement, fixé sur la paroi latérale de ce dernier et comprenant un fond plan percé d'un orifice de passage de l'embout et prenant appui, dans le sens axial, sur l'épaulement de la face latérale de l'embout.In accordance with the invention, at each end of the shaft of the roller, the support ball is crimped at the end of a support piece consisting of a nozzle limited laterally by a cylindrical face comprising a delimiting shoulder, side of the roller, a base with an enlarged section placed inside a housing formed at the end of the roller and limited, on the side of the roller, by a transverse bottom and, on its periphery, by a cylindrical side wall, said enlarged base bearing, in the axial direction on the bottom of the housing, by means of an axial stop and in the transverse direction, on the lateral wall of the housing, by means of a centering bearing of the end piece on the axis of rotation, the assembly being held by a housing closure cap, fixed to the side wall of the latter and comprising a flat bottom pierced with an orifice for passage of the end piece and bearing, in the axial direction, on the ep aulement of the lateral face of the nozzle.

De façon avantageuse, le roulement de centrage de la base élargie sur la paroi latérale du logement est un roulement à aiguilles.Advantageously, the centering bearing of the enlarged base on the side wall of the housing is a needle bearing.

D'autre part, le rouleau n'étant pas maintenu par des paliers mais par appui radial, généralement sur un autre rouleau, son axe de rotation peut être amené à se déplacer légèrement parallèlement à lui-même , à l'intérieur du bâti fixe , par suite de l'usure de l'enveloppe extérieure du rouleau. Dans ce cas, la bille d'appui du rouleau risque de ne plus être centrée par rapport à la pièce d'usure placée sur le bâti. Selon une disposition préférentielle, le dispositif comprend un moyen de réglage de la position de la pièce d'usure sur le bâti, en fonction de la position de l'axe de rotation. Ce moyen de réglage peut avantageusement être constitué d'une pièce de maintien de la pièce d'usure, montée coulissante suivant la direction de déplacement de l'axe de rotation, dans une rainure ménagée sur le bâti, et susceptible d'être fixée en position réglable le long de la rainure, au moyen d'un organe amovible de fixation.On the other hand, the roller not being held by bearings but by radial support, generally on another roller, its axis of rotation can be caused to move slightly parallel to itself, inside the fixed frame , due to wear of the outer casing of the roller. In this case, the roller support ball may no longer be centered relative to the wear part placed on the frame. According to a preferred arrangement, the device comprises means for adjusting the position of the wearing part on the frame, as a function of the position of the axis of rotation. This adjustment means can advantageously consist of a part for holding the wearing part, slidingly mounted in the direction of movement of the axis of rotation, in a groove formed on the frame, and capable of being fixed in position adjustable along the groove, by means of a removable fixing member.

Mais l'invention sera mieux comprise par la description détaillée d'un mode de réalisation donné à titre d'exemple et représenté sur les dessins annexés.However, the invention will be better understood from the detailed description of an embodiment given by way of example and shown in the accompanying drawings.

  • - la Fig. 1 est une vue en coupe axiale d'une butée d'appui de rouleau, selon l'invention;- Fig. 1 is an axial sectional view of a roller bearing stop, according to the invention;
  • - la Fig. 2 est une vue en coupe, selon la flèche II-Il de la Fig. 1.- Fig. 2 is a sectional view, along arrow II-II of FIG. 1.

Sur la Fig. 1, on a représenté schématiquement l'extrémité d'un rouleau 1 monté rotatif autour de son axe 10 sur un bâti 2. Le rouleau 1 peut être par exemple un rouleau de planéité sur lequel passe à grande vitesse, une bande métallique 11. Il est maintenu radialement de façon classique, par des moyens non représentés, par exemple des galets de support répartis régulièrement autour de son axe ou bien un rouleau d'appui placé du côté opposé à la tôle 11.In Fig. 1, there is shown schematically the end of a roller 1 rotatably mounted around its axis 10 on a frame 2. The roller 1 can for example be a flatness roller over which passes at high speed, a metal strip 11. It is held radially in a conventional manner, by means not shown, for example support rollers distributed regularly around its axis or else a support roller placed on the side opposite to the sheet 11.

A chacune de ses extrémités, le rouleau 1 est muni d'une bille de contact 3 qui, selon les sollicitations axiales appliquées sur le rouleau, peut venir prendre appui sur une pièce d'usure 4, montée sur le bâti 2.At each of its ends, the roller 1 is provided with a contact ball 3 which, depending on the axial stresses applied to the roller, can come to bear on a wearing part 4, mounted on the frame 2.

Le bille de contact 3 est sertie à l'extrémité d'une pièce de support 5 constituée d'un embout 51, prolongé du côté du rouleau, par une base élargie 52. L'embout 51 et la base 52 sont limités par les faces latérales cylindriques centrées sur un même axe 50 qui est aligné avec l'axe 10 de rotation du rouleau. La base 52 a un diamètre supérieur à celui de l'embout 51, de façon à ménager, entre leurs faces latérales, un épaulement 53.The contact ball 3 is crimped at the end of a support piece 5 consisting of an end piece 51, extended on the side of the roller, by an enlarged base 52. The end piece 51 and the base 52 are limited by the faces lateral cylindrical centers on the same axis 50 which is aligned with the axis 10 of rotation of the roller. The base 52 has a diameter greater than that of the end piece 51, so as to provide, between their lateral faces, a shoulder 53.

La base élargie 52 s'emboîte à l'intérieur d'un logement limité latéralement par une paroi cylindrique 61 et, du côté du rouleau, par un fond 62 transversal à l'axe. De préférence, le logement 6 est ménagé dans une pièce 63 formant le corps de la butée axiale et fixé par une vis 64 à l'extrémité du rouleau, de telle sorte que l'axe 60 de la cuvette 6 coïncide avec l'axe 10 du rouleau.The enlarged base 52 fits inside a housing bounded laterally by a cylindrical wall 61 and, on the side of the roller, by a bottom 62 transverse to the axis. Preferably, the housing 6 is formed in a part 63 forming the body of the axial stop and fixed by a screw 64 at the end of the roller, so that the axis 60 of the bowl 6 coincides with the axis 10 of the roller.

La base 52 de la pièce de support 5 est maintenue dans le logement 6, d'une part, radialement par un roulement de centrage 65 interposé entre la face interne 61 de la cuvette 6 et la face latérale de la base 52, et d'autre part, axialement, par une butée axiale 66 interposée entre la face d'extrémité 54 de la base 52 et le fond 62 de la cuvette 6. Dans cette position, l'épaulement 53 se trouve sensiblement dans le plan de l'extrémité de la paroi latérale cylindrique 61 du logement.The base 52 of the support piece 5 is held in the housing 6, on the one hand, radially by a centering bearing 65 interposed between the internal face 61 of the bowl 6 and the lateral face of the base 52, and on the other hand, axially, by an axial stop 66 interposed between the end face 54 of the base 52 and the bottom 62 of the bowl 6. In this position, the shoulder 53 is substantially in the plane of the end of the cylindrical side wall 61 of the housing.

L'ensemble est maintenu par un chapeau 7 de fermeture du logement comprenant une douille 71 munie d'un filetage interne qui se visse sur un filetage correspondant 67 ménagé sur la paroi latérale (61) du logement (6). Le chapeau 7 est fermé par un fond plan 73, percé d'un orifice de passage de t'embout 50 et qui s'appuie sur l'épaulement 53, de façon à maintenir en place la base 52, à l'intérieur du logement. De façon avantageuse, l'orifice de passage de l'embout 51 est constitué par un alésage ménagé dans l'axe d'un manchon cylindrique 74 qui prolonge le chapeau 7, sensiblement jusqu'à l'extrémité de l'embout, celui-ci étant enfilé dans l'alésage axial sans cependant être serré, de telle sorte que le manchon 74 constitue un palier lisse coopérant avec le roulement 65 pour maintenir l'axe 50 de la bille aligné avec l'axe 10 du rouleau, sans interdire une rotation de l'embout 51 par rapport au manchon 74.The assembly is held by a housing closure cap 7 comprising a socket 71 provided with an internal thread which is screwed onto a corresponding thread 67 formed on the side wall (61) of the housing (6). The cap 7 is closed by a flat bottom 73, pierced with an orifice for the passage of the end piece 50 and which is supported on the shoulder 53, so as to hold the base 52 in place inside the housing . Advantageously, the orifice for passage of the end piece 51 is constituted by a bore formed in the axis of a cylindrical sleeve 74 which extends the cap 7, substantially up to the end of the end piece, this- ci being threaded in the axial bore without however being tightened, so that the sleeve 74 constitutes a smooth bearing cooperating with the bearing 65 to keep the axis 50 of the ball aligned with the axis 10 of the roller, without prohibiting a rotation of the nozzle 51 relative to the sleeve 74.

Par ailleurs, la plaque d'usure 4 est montée dans une pièce de support 41 qui comprend un prolongement en forme de U 42 venant se placer au-dessous du manchon 74. Le prolongement 42 sert ainsi à supporter le rouleau 1 en cas d'arrêt, par exemple, au cours d'un démontage.Furthermore, the wear plate 4 is mounted in a support piece 41 which comprises a U-shaped extension 42 which is placed below the sleeve 74. The extension 42 thus serves to support the roller 1 in the event of stop, for example, during disassembly.

De façon avantageuse, la pièce de support 41 peut être fixée en position réglable sur le bâti 2. A cet effet, la pièce de support 41 est munie d'une queue 43 qui s'enfile dans un trou oblong ou une rainure 21 ménagée dans le bâti 2 et permettant le coulissement de la queue 43, suivant une direction parallèle à la direction d'appui du rouleau 1 sur son support. La pièce de support 41 est fixée sur le bâti 2 par un épaulement 45 et une rondelle 46 serrée par un boulon 47. De la sorte, en cas d'usure du rouleau 1 déterminant un léger déplacement de son axe 10, il est possible de déplacer en conséquence, la pièce de support 41, et par conséquent, la plaque d'usure 4 de façon que la bille de contact 3 reste parfaitement centrée sur la plaque d'usure 4.Advantageously, the support piece 41 can be fixed in an adjustable position on the frame 2. For this purpose, the support piece 41 is provided with a tail 43 which is threaded through an oblong hole or a groove 21 formed in the frame 2 and allowing the tail 43 to slide, in a direction parallel to the direction of support of the roller 1 on its support. The support piece 41 is fixed to the frame 2 by a shoulder 45 and a washer 46 tightened by a bolt 47. In this way, in the event of wear of the roller 1 determining a slight displacement of its axis 10, it is possible to move the support piece 41, and consequently, the wear plate 4 so that the contact ball 3 remains perfectly centered on the wear plate 4.

On voit que, dans la disposition selon l'invention, la partie tournante de la butée sur laquelle est fixée la bille 3 est simplement constituée par la pièce de support 5 qui a une inertie très réduite. Lorsque le rouleau 1 est entraîné à grande vitesse, la pièce de support 5 et la bille 3 tournent également autour de l'axe 10. Cependant, en cas d'appui sur la plaque d'usure 4, la rotation de la pièce de support 5 et de la bille 3 peut être arrêtée en un temps très court en raison de la raible inertie de la pièce de support, centrée par le roulement 65 et prenant appui sur la butée axiale 66.It can be seen that, in the arrangement according to the invention, the rotating part of the stop on which the ball 3 is fixed is simply constituted by the support part 5 which has a very reduced inertia. When the roller 1 is driven at high speed, the support piece 5 and the ball 3 also rotate around the axis 10. However, if it is pressed on the wear plate 4, the rotation of the support piece 5 and the ball 3 can be stopped in a very short time due to the low inertia of the support piece, centered by the bearing 65 and bearing on the axial stop 66.

Pour diminuer autant que possible l'inertie des parties tournantes, il est avantageux d'utiliser un roulement à aiguilles pour lè centrage de la pièce de support 5.To reduce the inertia of the rotating parts as much as possible, it is advantageous to use a needle bearing for centering the support part 5.

La faible inertie de l'ensemble des parties tournantes ainsi que le faible contact entre la bille 3 de petit diamètre et la plaque d'usure 4 permettent de réduire l'énergie de chaleur produite par les frottements lorsque la bille 3 vient s'appuyer sur la plaque d'usure 4.The low inertia of all the rotating parts and the low contact between the ball 3 of small diameter and the wear plate 4 make it possible to reduce the heat energy produced by friction when the ball 3 comes to bear on the wear plate 4.

Cette diminution de production de chaleur permet d'avoir des vitesses supérieures à 12000 t/mn pour des cylindres de diamètre de l'ordre de 20 mm.This reduction in heat production makes it possible to have speeds greater than 12,000 rpm for cylinders with a diameter of the order of 20 mm.

Claims (5)

1. Device for axially supporting a roller (1) mounted rotatably about its axis (10) in a fixed frame (2) and resting axially on the latter, at each end, by means of a contact ball bearing (3) centred about the axis of rotation (10), characterized in that, at each end, the contact ball bearing (3) is mounted on the end of a support piece (5) consisting of a cylindrical insert (51) extended, on the roller side, by an enlarged base piece (52) having a diameter greater than that of the insert (51) and fitting inside a recess (6) provided at the end of the roller (1) and limited, on the roller side, by a transverse end wall (62) and, on its periphery, by a cylindrical side wall (61), the said enlarged base piece (52) bearing, in the axial direction, against the end wall (62) of the recess (6), by means of an axial bearing (66) and, in the radial direction, against the side wall (61) of the recess (6), by means of a rolling bearing (65) centring the insert (51) about the axis of rotation (10), the assembly being held in position by a cap (7) which closes the recess (6) and is fixed onto the side wall (61) of the latter and comprises a flat end wall (73) provided with an orifice through which the insert (51) passes and bearing, in the axial direction, against a shoulder (53) formed between the cylindrical side surfaces of the insert (51) and the bearing base piece (52).
2. Axial support device according to claim 1, characterized in that the rolling bearing (65) centring the enlarged base piece (52) and located on the side wall of the recess (6) is a needle roller bearing.
3. Axial support device according to claim 1, characterized in that the closing cap (7) comprises a bush (71) provided with an internal thread capable of being screwed onto a corresponding thread (67) on the side wall (61) of the recess (6).
4. Axial support device according to claim 1, in which the axis of rotation (10) of the roller (1) may be displaced, parallel to itself, inside the fixed frame (2), the latter being provided, opposite each contact ball bearing, with a wearing component (4), characterized in that it comprises a means (41, 47) for adjusting the position of the wearing component (4) on the frame, in accordance with the position of the axis of rotation (10).
5. Axial support device according to claim 4, characterized in that the means for adjusting the position of the wearing component comprises a part (41) retaining the wearing component (4), which part is mounted so as to slide, in the direction of displacement of the axis of rotation (10), in a groove (21) provided on the frame (2), and a removable member (43, 47) for fixing the retaining part (41) in an adjustable position, along the groove (21).
EP87400554A 1986-03-12 1987-03-12 Device for axially holding a roll Expired - Lifetime EP0237439B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8603530 1986-03-12
FR8603530A FR2595591A1 (en) 1986-03-12 1986-03-12 AXIAL HOLDING DEVICE FOR A ROLL, ESPECIALLY FOR A ROLLING MILL

Publications (2)

Publication Number Publication Date
EP0237439A1 EP0237439A1 (en) 1987-09-16
EP0237439B1 true EP0237439B1 (en) 1990-05-16

Family

ID=9333053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400554A Expired - Lifetime EP0237439B1 (en) 1986-03-12 1987-03-12 Device for axially holding a roll

Country Status (5)

Country Link
US (1) US4805432A (en)
EP (1) EP0237439B1 (en)
DE (1) DE3762712D1 (en)
ES (1) ES2015069B3 (en)
FR (1) FR2595591A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3930365A1 (en) * 1989-09-12 1991-03-21 Fritz Stahlecker STORAGE FOR ONE OE SPINNING ROTOR
US5487612A (en) * 1994-11-28 1996-01-30 Anderson; Ronald L. Shaft supporting bearing assembly with axially disposed cap and ball member
DE19545786A1 (en) * 1995-12-08 1997-06-12 Fritz Stahlecker Open end spinning rotor
PT1090841E (en) * 1999-10-07 2004-06-30 Itw Mima Systems S A RAPID LEVER SYSTEM FOR MOUNTED ROLLERS
FR2816530B1 (en) * 2000-11-15 2003-02-07 Usinor METHOD OF ADJUSTING A PLANER UNDER TRACTION AND CORRESPONDING DEVICE
US20090045029A1 (en) * 2007-08-16 2009-02-19 Deur Delwyn G Conveyor roller and cartridge bearing assembly for same
CN113020328B (en) * 2021-02-08 2024-01-19 江门市新会区园达工具有限公司 High-precision roller type leveler
KR20230171212A (en) * 2022-06-13 2023-12-20 주식회사 솔룸신소재 Asymmetric rolling apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063787A (en) * 1934-09-24 1936-12-08 Torrington Co Antifriction bearing and method of making the same
US2606084A (en) * 1947-05-05 1952-08-05 W & L E Gurley Spindle bearing for surveying instruments
US3655226A (en) * 1970-08-03 1972-04-11 C R C Ind Bearing assembly
DE2514734C2 (en) * 1975-04-04 1982-10-28 Stahlecker, Fritz, 7347 Bad Überkingen Storage for an open-end spinning rotor
JPS58922B2 (en) * 1978-04-10 1983-01-08 株式会社日立製作所 Tensile bending straightening machine
JPS59137122A (en) * 1983-01-26 1984-08-07 Nippon Steel Corp Thrust load supporting device
DE3447162A1 (en) * 1984-12-22 1986-07-03 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel DEVICE FOR STORING THREAD SPINDLES

Also Published As

Publication number Publication date
ES2015069B3 (en) 1990-08-01
FR2595591A1 (en) 1987-09-18
DE3762712D1 (en) 1990-06-21
US4805432A (en) 1989-02-21
EP0237439A1 (en) 1987-09-16

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