EP2030720A1 - Precision guiding device in a machine for machining cylindrical pieces - Google Patents

Precision guiding device in a machine for machining cylindrical pieces Download PDF

Info

Publication number
EP2030720A1
EP2030720A1 EP07115418A EP07115418A EP2030720A1 EP 2030720 A1 EP2030720 A1 EP 2030720A1 EP 07115418 A EP07115418 A EP 07115418A EP 07115418 A EP07115418 A EP 07115418A EP 2030720 A1 EP2030720 A1 EP 2030720A1
Authority
EP
European Patent Office
Prior art keywords
shaft
spindle
floating
pulley
axis
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.)
Withdrawn
Application number
EP07115418A
Other languages
German (de)
French (fr)
Inventor
Pierre-Louis Piguet
Pierre Pahud
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.)
Rollomatic SA
Original Assignee
Rollomatic SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rollomatic SA filed Critical Rollomatic SA
Priority to EP07115418A priority Critical patent/EP2030720A1/en
Priority to CN200880104596.2A priority patent/CN101790435A/en
Priority to JP2010522502A priority patent/JP2010537834A/en
Priority to US12/733,353 priority patent/US20100170371A1/en
Priority to EP08807473A priority patent/EP2197624A1/en
Priority to PCT/IB2008/053476 priority patent/WO2009027940A1/en
Priority to TW097133223A priority patent/TW200924902A/en
Publication of EP2030720A1 publication Critical patent/EP2030720A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/247—Supports for drills
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/066—Work supports, e.g. adjustable steadies adapted for supporting work in the form of tools, e.g. drills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2508—Lathe with tool turret

Definitions

  • the object of the present invention is to create an improved doll capable of being mounted on the base of a machining machine in which the workpiece holding device maintains the latter with the required precision, this doll being designed so as to perfectly master the two remaining degrees of freedom without causing spurious effects that could affect the precision of the machining.
  • the present invention relates to a precision guide device according to the appended claims.
  • a floating head doll 1 which comprises a base 2 intended to be mounted on a machine base, while being accurately guided along an axis X relative to this base.
  • a motor support generally designated by the numeral 3 and containing in a casing 4 a drive motor 5 ( Fig. 2 ) with numerical control.
  • This drive motor 5 is intended to rotate elongated cylindrical pieces, such as drills, for example, in a very hard material, and which must be erected or ground by wheels mounted and guided on the base of the machine. To achieve the required accuracy, it is essential that the workpieces be held in a part-taking device (not shown here) that guides them by setting four degrees of freedom, two rotations and two translations in space. The parts thus having a position and an orientation of their axis precisely determined, thanks to the part taking device, the drive motor 5 must control the rotation about the axis of the part, while the axial displacement of the doll 1 determines the last degree of freedom.
  • the doll 1 is equipped with a floating spindle generally designated by 6 ( Fig. 2 ) and receiving said workpieces.
  • the floating spindle 6 appears at the Fig. 1 where we see the end of a clamp holder holder 7 containing and controlling a clamp 8 clamping the workpiece.
  • the Fig. 2 shows the construction of the drive mechanism of the sleeve 7.
  • the motor shaft 5 carries a drive pulley 9 which, by a toothed belt 10, drives a pin pulley 11.
  • the pulley 11 is mounted on two ball bearings 12 whose inner rings are mounted on a socket base 13 rigidly secured to the base 2 by means of a fixed ring 14 and a spacer 15.
  • the spindle 6 comprises a spindle shaft 16 which connects the spindle pulley 11 to the clamp holder bushing 7.
  • the pulley 11 is integral with a circular portion exterior of a pseudo-cardan disc 17 having a central portion fixed by screws 18 and a centering piece 19 against the rear face of the solid portion 20 of the spindle shaft 16.
  • the solid portion 20 of the spindle shaft 16 freely rotates in the socket base 13, while its front end 21, secured to the clamp holder sleeve 7, is guided in a fixed sleeve 22.
  • a deformable portion 23 better represented at the Fig. 4 and playing also a role of pseudo-cardan, as the intermediate zone of the piece 17 (see Fig. 3 and 4 ).
  • the disk 17 and the deformable portion 23 of the spindle shaft 16 are elements that functionally play similar roles.
  • the pseudo-cardan disk 17 comprises an outer peripheral zone 24 provided with openings for fixing by screw to the pulley 11, an intermediate zone 25 and an annular central zone 26 with openings (not shown) for the screws 18. Between these zones extend two pairs of openings shaped in an arc of a circle which leave between their ends in each pair only two cruciform elements 27, 27 'and 28, 28' arranged radially in planes containing the axis of the part 17 and perpendicular to each other.
  • cruciform elements 27 and 28 are respectively interconnected the zones 24 and 25 and the zones 25 and 26 so that angular displacements of low amplitude around the axes i and ii are possible between the outer zone 24 and the central zone. 26.
  • Fig. 4 which represents the tubular portion of the spindle shaft 16, there is a rear solid zone 20 separated from a solid zone before 21 by the deformable portion 23, the latter limited by two pairs of narrow openings shaped slits which surround the axis of the shaft each substantially half of the turn of the tree and leave between their ends only the thin webs 29, 29 'and 30, 30' connecting each zone 20 or 21 to the intermediate zone 23.
  • the plans common to the sails 29 and the sails 30 are perpendicular to each other. Small angular displacements between zones along the axes k and kk are possible almost freely.
  • the gripper 8, and thus the workpiece which is retained in the spindle 6 by a conventional clamping device 31, is connected to the drive pulley 9 by means of two pseudo-gimbals, the cruciform elements 27, 28 and the sails 29 and 30, which allow misalignments of the piece both parallel and angular with respect to the drive pulley 9 and therefore relative to the base 2.
  • the part In the axial direction, however, the part is maintained rigidly, because the cruciform elements 27, 28 and the webs 29, 30 are not deformable in this direction.
  • the connection is rigid between the part fixed in the clamp 8 and the servomotor 5, which allows the angular control and its interpolation with the other numerical axes of the machine.
  • the clamp 8 and thus the part which is retained by its clamping system 31 is connected to the drive pulley via two pseudo-gimbals, the elements 27, 28 and 29, 30 , which allow misalignments of the part, both parallel and angular with respect to the drive pulley 11, and therefore with respect to the base 26.
  • the part is held rigidly because the elements 27, 28 and 29, 30 are not deformable in this direction.
  • the connection is rigid between the workpiece and the servomotor, allowing the angular control and its interpolation with the other numerical axes of the machine.
  • the device produced ensures no play and no wear compared to any device traditionally equipped with universal joints.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Jigs For Machine Tools (AREA)
  • Turning (AREA)

Abstract

The device has a poppet mounted on a pedestal of a cylindrical part machining machine, and including a floating pin (6) connected by an end to a motor (5) driving in rotation. Another end of the pin is connected to a clamping collet (8) that radically holds elongated cylindrical parts, which are guided along an axle fixed in a guidance system. The pin is arranged in such a manner that the parts are rigidly coupled in rotation with the motor and are allowed to freely float with respect to the guidance system.

Description

L'usinage de certains outils cylindriques en matériaux durs, comme des forets de petit diamètre, plus ou moins longs, doit répondre à des exigences de précision de plus en plus grandes.The machining of some cylindrical tools of hard materials, such as small diameter drills, more or less long, must meet increasingly demanding accuracy requirements.

Dans les machines usuelles, on trouve généralement un dispositif de prise de pièce réalisé par un vé fixe additionné d'un doigt de serrage. Ces dispositifs retirent quatre degrés de liberté au barreau à usiner : deux rotations et deux translations. Pour que le guidage soit exact et complet, il reste donc au dispositif d'entraînement à retirer les deux degrés de liberté restants, le déplacement axial et la rotation autour de l'axe de la pièce, ce dernier ne devant pas être annulé mais piloté numériquement pour permettre une interpolation avec les autres mouvements de la machine.In the usual machines, there is generally a part taking device made by a fixed vee added a clamping finger. These devices remove four degrees of freedom from the bar to be machined: two rotations and two translations. So that the guidance is exact and complete, it remains to the drive device to remove the two remaining degrees of freedom, the axial displacement and rotation around the axis of the part, the latter not to be canceled but piloted numerically to allow an interpolation with the other movements of the machine.

Le but de la présente invention est de créer une poupée perfectionnée susceptible d'être montée sur le socle d'une machine d'usinage dans laquelle le dispositif de prise de pièce maintient ces dernières avec la précision requise, cette poupée étant conçue de manière à maîtriser parfaitement les deux degrés de liberté restants sans entraîner d'effets parasites susceptibles d'affecter la précision de l'usinage.The object of the present invention is to create an improved doll capable of being mounted on the base of a machining machine in which the workpiece holding device maintains the latter with the required precision, this doll being designed so as to perfectly master the two remaining degrees of freedom without causing spurious effects that could affect the precision of the machining.

Dans ce but, la présente invention a pour objet un dispositif de guidage de précision selon les revendications annexées.For this purpose, the present invention relates to a precision guide device according to the appended claims.

Une forme d'exécution de l'objet de l'invention est décrite ci-après à simple titre d'exemple en se référant au dessin annexé dans lequel :

  • la fig. 1 est une vue en perspective d'une poupée à broche flottante faisant partie du dispositif de guidage,
  • la fig. 2 est une vue en coupe verticale de la poupée de la fig. 1, par l'axe de la broche flottante,
  • les fig. 3A et 3B sont des vues en perspective d'une pièce ajourée faisant partie de la broche, et
  • la fig. 4 est une vue en perspective de l'arbre de broche avec partie antérieure ajourée.
One embodiment of the subject of the invention is described below by way of example only with reference to the appended drawing in which:
  • the Fig. 1 is a perspective view of a floating pin doll forming part of the guide device,
  • the Fig. 2 is a vertical sectional view of the doll of the Fig. 1 , by the axis of the floating spindle,
  • the Fig. 3A and 3B are perspective views of a perforated part forming part of the spindle, and
  • the Fig. 4 is a perspective view of the spindle shaft with anterior perforated part.

On voit à la fig. 1 une poupée 1 à broche flottante qui comporte un socle 2 destiné à être monté sur une embase de machine, tout en étant guidé avec précision selon un axe X par rapport à cette embase. Sur le socle 2 est rigidement fixé un support de moteur désigné globalement par le chiffre 3 et contenant dans une enveloppe 4 un moteur d'entraînement 5 (fig. 2) à commande numérique.We see at the Fig. 1 a floating head doll 1 which comprises a base 2 intended to be mounted on a machine base, while being accurately guided along an axis X relative to this base. On the base 2 is rigidly fixed a motor support generally designated by the numeral 3 and containing in a casing 4 a drive motor 5 ( Fig. 2 ) with numerical control.

Ce moteur d'entraînement 5 est destiné à faire tourner des pièces allongées cylindriques, telles que des forets par exemple, en un matériau très dur, et qui doivent être dressées ou rectifiées par des meules montées et guidées sur l'embase de la machine. Pour atteindre la précision requise, il est essentiel que les pièces à usiner soient tenues dans un dispositif de prise de pièce (non représenté ici) qui les guide en fixant quatre degrés de liberté, soit deux rotations et deux translations dans l'espace. Les pièces ayant ainsi une position et une orientation de leur axe précisément déterminées, grâce au dispositif de prise de pièce, le moteur d'entraînement 5 doit commander la rotation autour de l'axe de la pièce, tandis que le déplacement axial de la poupée 1 détermine le dernier degré de liberté.This drive motor 5 is intended to rotate elongated cylindrical pieces, such as drills, for example, in a very hard material, and which must be erected or ground by wheels mounted and guided on the base of the machine. To achieve the required accuracy, it is essential that the workpieces be held in a part-taking device (not shown here) that guides them by setting four degrees of freedom, two rotations and two translations in space. The parts thus having a position and an orientation of their axis precisely determined, thanks to the part taking device, the drive motor 5 must control the rotation about the axis of the part, while the axial displacement of the doll 1 determines the last degree of freedom.

Pour que ces deux degrés de liberté soient maîtrisés sans efforts parasites provenant de désalignements entre le dispositif de guidage et le mécanisme d'entraînement, la poupée 1 est équipée d'une broche flottante désignée de façon générale par 6 (fig. 2) et recevant lesdites pièces à usiner.So that these two degrees of freedom are controlled without parasitic forces resulting from misalignments between the guiding device and the drive mechanism, the doll 1 is equipped with a floating spindle generally designated by 6 ( Fig. 2 ) and receiving said workpieces.

La broche flottante 6 apparaît à la fig. 1 où on voit l'extrémité d'une douille porte-pince 7 contenant et commandant une pince 8 de serrage de la pièce à usiner.The floating spindle 6 appears at the Fig. 1 where we see the end of a clamp holder holder 7 containing and controlling a clamp 8 clamping the workpiece.

La fig. 2 montre la construction du mécanisme d'entraînement de la douille 7. L'arbre du moteur 5 porte une poulie d'entraînement 9 qui, par une courroie crantée 10, entraîne une poulie de broche 11. Afin d'éviter de transmettre les efforts de traction de la courroie crantée sur l'arbre de broche 6, la poulie 11 est montée sur deux roulements à billes 12 dont les bagues intérieures sont montées sur une douille de socle 13 rigidement solidarisée au socle 2 par l'intermédiaire d'une bague fixe 14 et d'une pièce intercalaire 15.The Fig. 2 shows the construction of the drive mechanism of the sleeve 7. The motor shaft 5 carries a drive pulley 9 which, by a toothed belt 10, drives a pin pulley 11. In order to avoid transmitting the forces of traction of the toothed belt on the spindle shaft 6, the pulley 11 is mounted on two ball bearings 12 whose inner rings are mounted on a socket base 13 rigidly secured to the base 2 by means of a fixed ring 14 and a spacer 15.

Avec ce montage, les efforts radiaux ne sont pas transmis à l'arbre, et seul le couple d'entraînement lui est fourni.With this arrangement, the radial forces are not transmitted to the shaft, and only the drive torque is provided.

Pour assurer la transmission des mouvements et des efforts dans les conditions indiquées plus haut, la broche 6 comporte un arbre de broche 16 qui relie la poulie de broche 11 à la douille porte-pince 7. La poulie 11 est solidaire d'une partie circulaire extérieure d'un disque pseudo-cardan 17 ayant une partie centrale fixée, par des vis 18 et une pièce de centrage 19, contre la face arrière de la partie massive 20 de l'arbre de broche 16. La partie massive 20 de l'arbre de broche 16 tourne librement dans la douille de socle 13, tandis que son extrémité avant 21, solidarisée à la douille porte-pince 7, est guidée dans une douille fixe 22. Entre les deux parties massives arrière 20 et avant 21 de l'arbre de broche 16 est ménagée une partie déformable 23 mieux représentée à la fig. 4 et jouant aussi un rôle de pseudo-cardan, comme la zone intermédiaire de la pièce 17 (voir fig. 3 et 4).To ensure the transmission of movements and forces under the conditions indicated above, the spindle 6 comprises a spindle shaft 16 which connects the spindle pulley 11 to the clamp holder bushing 7. The pulley 11 is integral with a circular portion exterior of a pseudo-cardan disc 17 having a central portion fixed by screws 18 and a centering piece 19 against the rear face of the solid portion 20 of the spindle shaft 16. The solid portion 20 of the spindle shaft 16 freely rotates in the socket base 13, while its front end 21, secured to the clamp holder sleeve 7, is guided in a fixed sleeve 22. Between the two solid rear portions 20 and 21 front of the spindle shaft 16 is formed a deformable portion 23 better represented at the Fig. 4 and playing also a role of pseudo-cardan, as the intermediate zone of the piece 17 (see Fig. 3 and 4 ).

Bien que conformés différemment, le disque 17 et la partie déformable 23 de l'arbre de broche 16 sont des éléments qui jouent fonctionnellement des rôles semblables.Although shaped differently, the disk 17 and the deformable portion 23 of the spindle shaft 16 are elements that functionally play similar roles.

A la fig. 3, le disque pseudo-cardan 17 comporte une zone périphérique extérieure 24 pourvue d'ouvertures pour la fixation par vis à la poulie 11, une zone intermédiaire 25 et une zone centrale annulaire 26 avec des ouvertures (non représentées) pour les vis 18. Entre ces zones s'étendent deux paires d'ouvertures profilées en arc de cercle qui ne laissent subsister entre leurs extrémités dans chaque paire que deux éléments cruciformes 27, 27' et 28, 28' disposés radialement selon des plans contenant l'axe de la pièce 17 et perpendiculaires l'un à l'autre. Par ces éléments cruciformes 27 et 28 sont reliées entre elles respectivement les zones 24 et 25 et les zones 25 et 26 de telle manière que des déplacements angulaires de faible amplitude autour des axes i et ii sont possibles entre la zone extérieure 24 et la zone centrale 26.To the Fig. 3 , the pseudo-cardan disk 17 comprises an outer peripheral zone 24 provided with openings for fixing by screw to the pulley 11, an intermediate zone 25 and an annular central zone 26 with openings (not shown) for the screws 18. Between these zones extend two pairs of openings shaped in an arc of a circle which leave between their ends in each pair only two cruciform elements 27, 27 'and 28, 28' arranged radially in planes containing the axis of the part 17 and perpendicular to each other. By these cruciform elements 27 and 28 are respectively interconnected the zones 24 and 25 and the zones 25 and 26 so that angular displacements of low amplitude around the axes i and ii are possible between the outer zone 24 and the central zone. 26.

Selon la fig. 4, finalement, qui représente la partie tubulaire de l'arbre de broche 16, on distingue une zone massive arrière 20 séparée d'une zone massive avant 21 par la partie déformable 23, celle-ci limitée par deux paires d'ouvertures étroites en forme de fentes qui entourent l'axe de l'arbre chacune pratiquement sur la moitié du tour de l'arbre et ne laissent subsister entre leurs extrémités que les voiles minces 29, 29' et 30, 30' reliant chaque zone 20 ou 21 à la zone intermédiaire 23. Ici aussi, les plans communs aux voiles 29 et aux voiles 30 sont perpendiculaires l'un à l'autre. De petits déplacements angulaires entre zones selon les axes k et kk sont possibles quasi librement.According to Fig. 4 finally, which represents the tubular portion of the spindle shaft 16, there is a rear solid zone 20 separated from a solid zone before 21 by the deformable portion 23, the latter limited by two pairs of narrow openings shaped slits which surround the axis of the shaft each substantially half of the turn of the tree and leave between their ends only the thin webs 29, 29 'and 30, 30' connecting each zone 20 or 21 to the intermediate zone 23. Here again, the plans common to the sails 29 and the sails 30 are perpendicular to each other. Small angular displacements between zones along the axes k and kk are possible almost freely.

La pince 8, et donc la pièce à usiner qui est retenue dans la broche 6 par un dispositif de serrage classique 31, se trouve reliée à la poulie d'entraînement 9 par l'intermédiaire de deux pseudo-cardans, les éléments cruciformes 27, 28 et les voiles 29 et 30, qui autorisent des désalignements de la pièce tant parallèles qu'angulaires par rapport à la poulie d'entraînement 9 et donc par rapport à la base 2. Dans le sens axial, par contre, la pièce est maintenue rigidement, car les éléments cruciformes 27, 28 et les voiles 29, 30 ne sont pas déformables dans cette direction. De même, en rotation, la liaison est rigide entre la pièce fixée dans la pince 8 et le servo-moteur 5, ce qui permet le contrôle angulaire et son interpolation avec les autres axes numériques de la machine.The gripper 8, and thus the workpiece which is retained in the spindle 6 by a conventional clamping device 31, is connected to the drive pulley 9 by means of two pseudo-gimbals, the cruciform elements 27, 28 and the sails 29 and 30, which allow misalignments of the piece both parallel and angular with respect to the drive pulley 9 and therefore relative to the base 2. In the axial direction, however, the part is maintained rigidly, because the cruciform elements 27, 28 and the webs 29, 30 are not deformable in this direction. Similarly, in rotation, the connection is rigid between the part fixed in the clamp 8 and the servomotor 5, which allows the angular control and its interpolation with the other numerical axes of the machine.

II en résulte que la pince 8, et donc la pièce qui est retenue par son système de serrage 31, se trouve reliée à la poulie d'entraînement par l'intermédiaire de deux pseudo-cardans, les éléments 27, 28 et 29, 30, lesquels autorisent des désalignements de la pièce, tant parallèles qu'angulaires par rapport à la poulie d'entraînement 11, et donc par rapport à la base 26. Axialement, par contre, la pièce est maintenue rigidement car les éléments 27, 28 et 29, 30 ne sont pas déformables dans cette direction. De même en rotation, la liaison est rigide entre la pièce et le servomoteur, permettant le contrôle angulaire et son interpolation avec les autres axes numériques de la machine.As a result, the clamp 8, and thus the part which is retained by its clamping system 31, is connected to the drive pulley via two pseudo-gimbals, the elements 27, 28 and 29, 30 , which allow misalignments of the part, both parallel and angular with respect to the drive pulley 11, and therefore with respect to the base 26. Axially, however, the part is held rigidly because the elements 27, 28 and 29, 30 are not deformable in this direction. Similarly in rotation, the connection is rigid between the workpiece and the servomotor, allowing the angular control and its interpolation with the other numerical axes of the machine.

II en résulte que le dispositif réalisé garantit une absence de jeu et une absence d'usure par rapport à tout dispositif traditionnellement muni de cardans.As a result, the device produced ensures no play and no wear compared to any device traditionally equipped with universal joints.

Claims (4)

Dispositif de guidage de précision dans une machine d'usinage de pièces cylindriques, caractérisé en ce qu'il comporte une poupée (1) avec une broche flottante (6), dans laquelle lesdites pièces sont entraînées en rotation.Precision guide device in a machine for machining cylindrical parts, characterized in that it comprises a doll (1) with a floating spindle (6), wherein said parts are rotated. Dispositif selon la revendication 1, caractérisé en ce que la pièce à usiner étant guidée selon un axe fixe dans un système de guidage, la broche flottante (6) est agencée de manière à éliminer tout effort parasite pouvant résulter d'un défaut de coaxialité entre ledit axe fixe de la pièce guidée et l'axe de la broche flottante.Device according to claim 1, characterized in that the workpiece being guided along a fixed axis in a guide system, the floating spindle (6) is arranged to eliminate any parasitic force that may result from a lack of coaxiality between said fixed axis of the guided part and the axis of the floating spindle. Dispositif selon la revendication 2, caractérisé en ce que ladite broche flottante comporte un arbre de broche (16) composite déformable, à une extrémité duquel est fixée une douille porte-pince (7) guidant une pince de serrage (9) desdites pièces à usiner, en ce que ledit arbre (16) est accouplé à une poulie (11) liée à un moteur (5) d'entraînement et portée selon un axe rigoureusement fixe par rapport au socle (2) au moyen d'un ou de paliers à billes (12), et en ce qu'une transmission flexible (17, 23) est intégrée à l'arbre de broche (16) composite entre ladite poulie (11) et la douille porte-pince (7), de manière à réaliser ladite élimination de tout effort parasite.Device according to claim 2, characterized in that said floating spindle comprises a deformable composite spindle shaft (16), at one end of which is fixed a clamp holder bushing (7) guiding a collet (9) of said workpieces , in that said shaft (16) is coupled to a pulley (11) connected to a drive motor (5) and carried along a rigorously fixed axis relative to the base (2) by means of one or more bearings. balls (12), and in that a flexible transmission (17, 23) is integrated with the composite spindle shaft (16) between said pulley (11) and the gripper holder (7), so as to realize said elimination of any parasitic effort. Dispositif selon la revendication 3, caractérisé en ce que la transmission flexible intégrée à l'arbre de broche composite se compose de deux portions annulaires flexibles de cet arbre (17; 23), espacées le long de celui-ci, l'une à l'avant et l'autre à l'arrière, chacune desdites portions annulaires étant formée de trois zones distinctes (24, 25, 26; 20, 23, 21) délimitées par deux paires d'ouvertures profilées s'étendant autour de l'axe de l'arbre en ne laissant subsister entre elles dans chaque paire que deux éléments cruciformes (27, 27' et 28, 28'), respectivement deux voiles minces (29, 29' et 30, 30') situés dans un même plan diamétral, chaque paire d'éléments cruciformes, respectivement de voiles reliant une première zone à une deuxième ou la deuxième à la troisième en deux endroits diamétralement opposés, de manière à permettre des flottements radiaux entre une desdites zones (21), solidaire de la douille porte-pince (7) dans la portion annulaire située à l'avant de l'arbre, et une zone (24) solidaire de la poulie (11) dans la portion annulaire située à l'arrière de l'arbre, cet agencement transmettant sans déformation le couple d'entraînement.Device according to claim 3, characterized in that the flexible transmission integrated in the composite spindle shaft is composed of two flexible annular portions of this shaft (17; 23) spaced along the latter, one to one before and one at the rear, each of said annular portions being formed of three distinct zones (24, 25, 26; 20, 23, 21) delimited by two pairs of profiled openings extending around the axis of the tree, leaving in each pair only two cruciform elements (27, 27 'and 28, 28'), respectively two thin webs (29, 29 'and 30, 30') situated in the same diametrical plane , each pair of cruciform elements, respectively of sails connecting a first zone to a second or the second to the third in two diametrically opposed locations, so as to allow radial floating between one of said zones (21), integral with the clamp holder bushing (7) in the annular portion located at the front of the shaft, and a zone (24). ) integral with the pulley (11) in the annular portion located at the rear of the shaft, this arrangement transmitting the drive torque without deformation.
EP07115418A 2007-08-31 2007-08-31 Precision guiding device in a machine for machining cylindrical pieces Withdrawn EP2030720A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP07115418A EP2030720A1 (en) 2007-08-31 2007-08-31 Precision guiding device in a machine for machining cylindrical pieces
CN200880104596.2A CN101790435A (en) 2007-08-31 2008-08-28 Precision guiding device in a machine for machining cylindrical parts
JP2010522502A JP2010537834A (en) 2007-08-31 2008-08-28 High precision guiding device in machines for machining cylindrical components
US12/733,353 US20100170371A1 (en) 2007-08-31 2008-08-28 Precision guidance device in a machine for machining cylindrical components
EP08807473A EP2197624A1 (en) 2007-08-31 2008-08-28 Precision guiding device in a machine for machining cylindrical parts
PCT/IB2008/053476 WO2009027940A1 (en) 2007-08-31 2008-08-28 Precision guiding device in a machine for machining cylindrical parts
TW097133223A TW200924902A (en) 2007-08-31 2008-08-29 Precision guidance device in a machine for machining cylindrical components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07115418A EP2030720A1 (en) 2007-08-31 2007-08-31 Precision guiding device in a machine for machining cylindrical pieces

Publications (1)

Publication Number Publication Date
EP2030720A1 true EP2030720A1 (en) 2009-03-04

Family

ID=38721468

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07115418A Withdrawn EP2030720A1 (en) 2007-08-31 2007-08-31 Precision guiding device in a machine for machining cylindrical pieces
EP08807473A Withdrawn EP2197624A1 (en) 2007-08-31 2008-08-28 Precision guiding device in a machine for machining cylindrical parts

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08807473A Withdrawn EP2197624A1 (en) 2007-08-31 2008-08-28 Precision guiding device in a machine for machining cylindrical parts

Country Status (6)

Country Link
US (1) US20100170371A1 (en)
EP (2) EP2030720A1 (en)
JP (1) JP2010537834A (en)
CN (1) CN101790435A (en)
TW (1) TW200924902A (en)
WO (1) WO2009027940A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014133391A1 (en) 2013-03-01 2014-09-04 Umc Utrecht Holding B.V. Dipole antenna for a magnetic resonance imaging system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103846746A (en) * 2012-11-30 2014-06-11 昆山允可精密工业技术有限公司 Precise rotating shaft for cutter grinder
CN103252648B (en) * 2013-05-16 2015-06-10 新昌县讯为自动化设备有限公司 Special drilling and reaming equipment for distributor of air conditioning system
US9259812B1 (en) * 2013-06-26 2016-02-16 The Boeing Company Clamp assembly and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693631A (en) * 1951-11-30 1954-11-09 Hamilton Watch Co Floating chuck
DE2228553A1 (en) * 1972-06-12 1974-01-10 Samson Apparatebau Ag TOOL CARRIER
US4174918A (en) * 1978-04-18 1979-11-20 Showa Machine Industries Co., Ltd. Tap holder
US4971339A (en) * 1988-06-17 1990-11-20 Illinois Tool Works, Inc. Collet type work driver
FR2752760A1 (en) * 1996-09-02 1998-03-06 Esco Sa MACHINING UNIT WITH ROTATING HEAD

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29446E (en) * 1961-02-25 1977-10-18 Thyssen Plastik Anger Apparatus for shaping the end of a tube
US3072416A (en) * 1961-05-31 1963-01-08 Gisholt Machine Co Force amplifying collet chuck
US4215605A (en) * 1978-11-03 1980-08-05 N. A. Woodworth Company Floating work driver chuck
DE8915435U1 (en) * 1989-03-22 1990-06-07 J. E. Reinecker Maschinenbau Gmbh & Co Kg, 7900 Ulm, De

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693631A (en) * 1951-11-30 1954-11-09 Hamilton Watch Co Floating chuck
DE2228553A1 (en) * 1972-06-12 1974-01-10 Samson Apparatebau Ag TOOL CARRIER
US4174918A (en) * 1978-04-18 1979-11-20 Showa Machine Industries Co., Ltd. Tap holder
US4971339A (en) * 1988-06-17 1990-11-20 Illinois Tool Works, Inc. Collet type work driver
FR2752760A1 (en) * 1996-09-02 1998-03-06 Esco Sa MACHINING UNIT WITH ROTATING HEAD

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014133391A1 (en) 2013-03-01 2014-09-04 Umc Utrecht Holding B.V. Dipole antenna for a magnetic resonance imaging system

Also Published As

Publication number Publication date
JP2010537834A (en) 2010-12-09
CN101790435A (en) 2010-07-28
TW200924902A (en) 2009-06-16
WO2009027940A1 (en) 2009-03-05
US20100170371A1 (en) 2010-07-08
EP2197624A1 (en) 2010-06-23

Similar Documents

Publication Publication Date Title
EP2021143A1 (en) Drilling tool and device with self-maintained axial vibrations
JPH1071582A (en) Portable type power tool
EP2030720A1 (en) Precision guiding device in a machine for machining cylindrical pieces
EP1816374B1 (en) Method of manufacturing a reducer, reducer and robot including such a reducer
JP2013129029A (en) Grinding spindle unit
FR2501816A1 (en) BALL-SCREW ASSEMBLY HAVING A BALL-ROD UNIT FOR CONTROLLING SLOW AND ACCURATE ADVANCE AND POWER-STEERING TRANSMISSION MECHANISM WITH SUCH BALL-SCREW ASSEMBLY
JP2012066355A (en) Workpiece fixing chuck device in machine tool and method of working circumferential surface of cylindrical workpiece
US9682453B2 (en) Tool changer for machine tool
EP3733331B1 (en) Main spindle device
FR2471276A1 (en)
FR2857891A1 (en) TOWER FOR PORTEES
FR2612438A1 (en) MACHINE TOOL, IN PARTICULAR DRILL OR TAPPING MACHINE
FR2490977A1 (en) TAP HOLDER ASSEMBLY
US20150128429A1 (en) Power Tool and Transmission Thereof
EP1419852A1 (en) Spindle unit
KR101113455B1 (en) Vibration absorber for turning machining
JP6486809B2 (en) Chuck device
KR100918517B1 (en) Tool fixer for machine tool
JP2008137110A (en) Main spindle device of machine tool
CH647968A5 (en) Rotary rest
JP6831604B1 (en) Cylindrical grinder
EP0334226B1 (en) Fastening mechanism for rotating tools
EP3572173B1 (en) Guide bushing for a cutting tool, associated drilling machine and system, use of the drilling system and maintenance method of the drilling machine
EP0363328B1 (en) Machine tool spindle
KR100887991B1 (en) Tool fixer for machine tool

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090905