EP1577059B1 - Dispositif et procédé pour maintenir et positionner des pièces de longueurs diverses entre-pointes - Google Patents

Dispositif et procédé pour maintenir et positionner des pièces de longueurs diverses entre-pointes Download PDF

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Publication number
EP1577059B1
EP1577059B1 EP05001961.1A EP05001961A EP1577059B1 EP 1577059 B1 EP1577059 B1 EP 1577059B1 EP 05001961 A EP05001961 A EP 05001961A EP 1577059 B1 EP1577059 B1 EP 1577059B1
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EP
European Patent Office
Prior art keywords
slide
workpiece
clamping
tip
nut
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.)
Not-in-force
Application number
EP05001961.1A
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German (de)
English (en)
Other versions
EP1577059A3 (fr
EP1577059A2 (fr
Inventor
Peter Bailer
Siegfried Veil
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.)
Vollmer Werke Maschinenfabrik GmbH
Original Assignee
Vollmer Werke Maschinenfabrik GmbH
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 Vollmer Werke Maschinenfabrik GmbH filed Critical Vollmer Werke Maschinenfabrik GmbH
Publication of EP1577059A2 publication Critical patent/EP1577059A2/fr
Publication of EP1577059A3 publication Critical patent/EP1577059A3/fr
Application granted granted Critical
Publication of EP1577059B1 publication Critical patent/EP1577059B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5104—Type of machine
    • Y10T29/5109—Lathe
    • 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
    • Y10T82/10—Process of turning
    • 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
    • Y10T82/2552—Headstock
    • 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
    • Y10T82/2564—Tailstock
    • 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
    • Y10T82/2593—Work rest

Definitions

  • the present invention relates to an apparatus and a method for clamping and positioning workpieces of different lengths.
  • Such a device is for example from the Swiss patent CH 692 450 known.
  • the apparatus described in this patent is a grinding machine in which elongated workpieces are received by a workpiece holder having one end and another end of these workpieces being tensioned with a counter-tip relative to the workpiece holder.
  • the workpiece holding device and the counter tip are each mounted on numerically controlled carriage.
  • the workpiece is first received by the workpiece holding device and then the workpiece holding device moves together with the workpiece and the counter-tip relative to each other so that the counter-tip penetrates into a corresponding receptacle, in particular in a center on the end face of the workpiece to be machined.
  • this receptacle is conical and receives the opposite tip for clamping purposes.
  • the further problem is that depending on the actual workpiece length, the two carriages with workpiece holding device and counter-tip must be positioned to each other in a suitable manner to securely clamp the workpiece with sufficient bias, but without damaging this.
  • WO 2004/007145 A1 discloses a method and apparatus for grinding the outer periphery of a rotating roll held at its ends. This is supported by a cushion body in a circumferential region opposite a grinding wheel. The roller is clamped between a tip of a workpiece headstock and a tip of a tailstock, wherein the workpiece headstock and the tailstock are adjustable in the axial direction against each other.
  • the device according to the invention it is possible to first contact the workpiece to be clamped with the clamping tip and / or the counter-tip and then to displace the first or / and the second slide in such a way that a sufficient preload can be generated via the tip and the counter-tip.
  • a sufficient preload can be generated via the tip and the counter-tip.
  • the workpiece to be clamped can be positioned with a positioning slide holding this between the clamping tip and the counter-tip.
  • the positioning carriage is guided linearly on a linear guide.
  • the positioning slide has a further biasing device and that the positioning slide is displaceable on contact of the workpiece with the clamping tip or the counter-tip under spring bias relative to the engaging on the workpiece clamping tip or counter-tip. Due to the displacement of the positioning carriage under spring pretension, special advantages can be achieved with regard to an exact positioning of the workpiece to be clamped on the device, as will be explained in more detail below.
  • a cost-effective, low-maintenance and precisely positionable drive device is achieved by the use of a threaded nut-nut arrangement.
  • the first carriage is associated with a separate drive means, wherein the first carriage is coupled to the displaceable on the threaded spindle nut.
  • the second carriage is associated with a separate drive means, wherein the second carriage is coupled to the displaceable on the threaded spindle nut.
  • the positioning carriage is assigned a separate drive means, wherein the positioning slide is coupled to the displaceable on the threaded spindle nut. According to the invention, however, individual carriages can also be displaced manually relative to the base, for example via a hand lever.
  • a coupling arrangement is provided between the nut and the respective slide, which allows a relative movement between the nut and the respective slide to build up a spring bias.
  • This variant of the invention has the advantage that the gripping tip or counter-tip and the holding arrangement on the positioning carriage are each fixedly connected to the carriages associated therewith and guided on the linear guide. As a result, the tips or the positioning device are positioned exactly to the base. The bias is achieved via the clutch assembly and a relative movement between the nut and the respective carriage within the clutch assembly.
  • this roller-ramp pairing with a arranged between two opposing ramp surfaces, rolling on this role, wherein the roller is arranged on the one component of mother and this associated carriage and the ramp surfaces on the other component of mother and this associated carriage is arranged. It can be provided in a development of the invention that the roller or the ramp surfaces are displaced under spring bias relative to the mother or the respective carriage.
  • roller is arranged on the nut and in that a spring-tensioned slide formed with the ramp surfaces is displaceably guided on the respective slide, wherein in a relative bearing of the nut and respective slide of the slider is displaced substantially in the direction orthogonal to the direction of Relatiwerlagerung against the spring bias.
  • the coupling device is associated with at least one limit switch, which is activated when a predetermined distance reaches a relative displacement between the mother and the respective carriage becomes.
  • two limit switches are provided which allow a detection of a Relatiwerlagerung between the mother and the respective carriage in both displacement directions.
  • first and second positioning carriages it is advantageous for the exact positioning of first and second positioning carriages if at least one of the carriages, preferably each carriage, is assigned a position transmitter for determining the current position of the carriage relative to the base.
  • each carriage is assigned at least one safety limit switch, wherein the drive device stops upon reaching the predetermined by the limit switch end position. As a result, it can be detected when one of the carriages approaches an end position insurmountable by the design of the device according to the invention, at which point a further displacement must be avoided.
  • variable characterizing the preload detects the deflection of the slider and can be deduced from the preload taking into account the spring stiffness.
  • step A) is carried out with a positioning slide which holds the workpiece during clamping. This allows positioning and clamping of the workpiece under full numerical control without manual intervention.
  • step B) the first slide is rigidly coupled or couplable to the mother of its drive means that the first slide is further displaced after contacting the workpiece by a predetermined path on the positioning, wherein the positioning carriage is biased relative to the nut of its drive means, then the first carriage is stopped upon reaching a predetermined limit bias or a predetermined limit deflection of the positioning carriage, and the first carriage is moved back to reduce the bias and deflection of the positioning carriage.
  • the one side of the workpiece is positioned in a predetermined position, in particular if this has a standardized center for receiving the clamping point.
  • the clamping point is located at a predetermined position and does not yield resiliently.
  • the biasing force required for clamping is achieved in the sequence rather by the second carriage and its movement.
  • the accuracy of the method according to the invention can be increased by moving the first carriage back until the preload and the displacement of the positioning carriage are close to zero or even zero.
  • step E) first of all the reaching of a predetermined limit prestress or a predetermined limit deflection is detected and that upon reaching the predetermined limit prestress or limit excursion the nut of the drive device associated with the second carriage is displaced by a predetermined tightening travel.
  • a device according to the invention is shown in a spatial representation and generally designated 10. This is coupled to a processing unit 12, which will not be described in detail below.
  • the inventive device 10 comprises a base 14 with Linear guides 16 and 18.
  • a first carriage 20 is linearly guided and corresponding to the double arrow X1 Fig. 1 displaced by a separate drive means.
  • a second carriage 22 is linearly guided on the linear guide 18 and corresponding to the double arrow X2 Fig. 1 displaced by a separate drive means.
  • the first carriage 20 has a receiving device 24, in which a clamping tip 26 is inserted.
  • the clamping tip 26 is fixedly coupled to the receiving device 24.
  • the receiving device 24 is in turn firmly connected to the first carriage 20.
  • the second carriage 22 also has a tip, namely the counter-tip in FIG. 28.
  • a positioning carriage 30 is linearly displaceable on the linear guides 16 via a drive device. How out FIGS. 1 and 4 As can be seen, the positioning carriage 30 has a gripper 32, which consists of a magazine 34 (FIG. Fig. 1 ) remove individual workpieces to be processed, such as milling cutters, and these, as in FIGS. 1 to 4 shown on the example of a workpiece to be machined 36, between the clamping tip 26 and the opposite tip 28 can position. For this purpose, the gripper 32 can be moved over the positioning slide 30 in different directions and rotated. The directions are in Fig. 1 indicated by the double arrows DH, XH, YH, ZH.
  • the device 10 is to be discussed in particular with regard to the clamping of the workpiece 36 between the clamping tip 26 and the counter-tip 28.
  • the positioning carriage 30 is linearly guided on the linear guide 16.
  • the positioning carriage 30 is coupled to a nut 40 which cooperates with a threaded spindle 42.
  • the threaded spindle 42 is rotatably driven by a drive, not shown, so that the nut 40 is displaceable on the threaded spindle 42 in the manner of a spindle-nut drive.
  • the coupling between nut 40 and positioning slide 30 is realized by a coupling device 44.
  • the coupling device 44 has a roller 46 which is rotatably mounted on the nut 40 and a ramp arrangement 48 which is formed on a slide 50 which is displaceable in the positioning carriage 30.
  • the slider 50 is biasing springs 52 and 54 in its in Fig. 6 biased position shown.
  • the biasing springs 52 and 54 are supported on a support plate 58 from.
  • the ramp assembly 48 has two V-shaped inclined surfaces that receive the roller 46.
  • the roller 46 rolls on one of the inclined surfaces of the ramp assembly 48 and directs the Slider 50 against the bias of the biasing springs 52 and 54 from.
  • the displacement of the slider 50 can be detected by means of a limit switch, not shown.
  • the second carriage 22 is, as in FIGS. 7 and 8th shown on the base 14 via the linear guides 18 linearly guided and displaceable via a spindle-nut arrangement 62 with the spindle 64 and the nut 66 along the linear guides 18. Also, the nut 66 is coupled to a rotatably mounted on this roller 69.
  • the second carriage 22 has a guided in this slide 68, on which a ramp assembly 70 is formed with two V-shaped mutually inclined surfaces.
  • the slider 68 is biased by springs 72 and 74 in the in Fig. 8 shown biased position, wherein the biasing springs 72 and 74 are supported on the support plate 76.
  • the clutch assembly 78 for coupling the nut 66 and the second carriage 22 acts in the same manner as described above with respect to the positioning carriage 30. Again, the second carriage 22 can be displaced relative to the driving nut 66, wherein a bias voltage builds up in response to the relative bearing by the biasing springs 72 and 74. The displacement of the slider 68 can be detected by means of a limit switch, not shown.
  • the device 10 For clamping the workpiece 36 between the clamping tip 26 and the counter-tip 28, the device 10 according to the invention is used as follows. First, the workpiece 36 is removed from the magazine 34 via the gripper 32 by means of the positioning slide 30 and positioned between the two tips, namely the clamping tip 26 and the counter-tip 28, such as in Figures 2 . 3 and 4 shown. In this case, the gripping tip 26 and the counter-tip 28 are at a distance from the workpiece 36 held by the positioning carriages 30. The workpiece 36, however, is aligned with its center axis with the gripping axis A formed by the gripping tip 26 and the counter-tip 28.
  • the first carriage 20 is then moved back so far, until just no deflection of the slider 50 is present.
  • the required displacement of the first carriage 20 is inherently determined by the design of the ramp assembly 48 and the roller 46. Now, the first carriage 20 is in a predetermined position for receiving the workpiece 36. The above procedure can be carried out even when rigidly held first carriage 20 and complementary displacement of the positioning carriage 30.
  • the second carriage 22 is displaced to the opposite end of the workpiece 36 to the receptacle 80, until finally the counter-tip 28 engages in a center provided in the workpiece.
  • the second carriage 22 is further displaced in the direction of the workpiece 36, wherein the slider 68 moves against the bias of the biasing springs 72 and 74.
  • the slider 68 reaches an intermediate position predetermined by the limit switch, the second carriage 22 is in a defined position with respect to the first carriage 20 for clamping the workpiece 36, this predetermined position being determined by the length of the workpiece 36.
  • the second carriage 22 driving the drive from this predetermined position by a certain distance, for example, by 20 mm, further displaced relative to the second carriage 22, which by the springs 72 and 74 exerted bias further increased.
  • a certain bias value can be achieved, which corresponds to the desired clamping force for machining the workpiece 36.
  • the positioning carriage 30 releases the workpiece 36 for machining and is moved to a parking position. Now the workpiece 36 can be processed. In this case - if necessary - both carriages 20 and 22 are displaced synchronously with each other. If the machining of the workpiece 36 is completed, then the positioning carriage 30 is approached again to the workpiece 36 and picks up the workpiece 30 with its gripper 32. Then, the second carriage 22 is moved away from the workpiece 36 while reducing the bias. As soon as the counter-tip 28 releases the workpiece 36 and moves away from it, the first carriage 20 can also be removed from the workpiece 36. As a result, the Positioning carriage 30, the finished machined workpiece 36 settle in the magazine 34.
  • the device according to the invention With the device according to the invention and the above-described inventive method for clamping workpieces between two tips, it is possible to clamp workpieces of any length fully automatically, without taking the risk that during clamping the workpiece due to its unknown length, for example, by force-intensive clamping between the tips is damaged. Rather, the device according to the invention adapts automatically to an arbitrary length of the workpiece and always achieves a predetermined desired clamping force independently of the length of the workpiece for each workpiece.
  • the essential advantage of the device according to the invention and of the method carried out with it is that workpieces of any length can be clamped reliably and safely.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Claims (17)

  1. Dispositif (10) pour maintenir et pour positionner entre deux pointes des pièces à usiner (36) de longueur différente, comprenant :
    - une base (14) pourvue d'au moins un guidage linéaire (18),
    - un premier chariot (20) pourvu d'une pointe de maintien (26), pouvant se déplacer de manière linéairement guidée sur ledit guidage linéaire (18),
    - un deuxième chariot (22) pourvu d'une contre-pointe (28), pouvant se déplacer de manière linéairement guidée sur ledit guidage linéaire (18) et,
    - un dispositif d'entraînement couplé au premier ou/et au deuxième chariot (20, 22),
    le premier chariot (20) et le deuxième chariot (22) pouvant se déplacer l'un par rapport à l'autre et par rapport à la base (14) de telle manière que des pièces à usiner (36) de longueur différente peuvent être maintenues entre lesdites pointe de maintien (26) et contre-pointe (28),
    le premier ou/et le deuxième chariot (20, 22) présentant en outre un dispositif de précontrainte, caractérisé en ce que
    la pointe de maintien (26) ou/et la contre-pointe (28) peuvent être déplacées contre la pièce à usiner (36) lorsqu'elles sont en contact avec la pièce à usiner (36) sous précontrainte par ressort,
    le dispositif d'entraînement comprenant un ensemble écrou/broche filetée (62), un dispositif de couplage (78) qui autorise un mouvement relatif entre l'écrou (66) et le chariot correspondant (66) pendant l'établissement de la précontrainte par ressort étant prévu entre l'écrou (66) et le chariot (20, 22) correspondant, et
    le dispositif de couplage (78) comprenant un couplage rouleau/rampe (69, 70) pourvu d'un rouleau (69) disposé entre deux surfaces de rampe (70) opposées l'une à l'autre et roulant sur celles-ci, ce rouleau (69) étant disposé sur un composant de l'écrou (66) et du chariot (20, 22) associé à celui-ci, et les surfaces de rampe (70) étant disposées sur l'autre composant de l'écrou (66) et du chariot (20, 22) associé à celui-ci.
  2. Dispositif (10) selon la revendication 1,
    caractérisé en ce que la pièce à usiner (36) peut être positionnée entre la pointe de maintien (26) et la contre-pointe (28) à l'aide d'un chariot de positionnement (30) maintenant la pièce.
  3. Dispositif (10) selon la revendication 2,
    caractérisé en ce que le chariot de positionnement (30) est guidé linéairement sur un guidage linéaire (16).
  4. Dispositif (10) selon la revendication 2 ou 3,
    caractérisé en ce que le chariot de positionnement (30) présente un dispositif de maintien supplémentaire et que ce chariot de positionnement (30) peut être déplacé par rapport à la pointe de maintien (26) ou à la contre-pointe (28) en prise avec la pièce à usiner (36) lorsqu'il est en contact avec la pièce à usiner (36) sous précontrainte par ressort.
  5. Dispositif (10) selon l'une des revendications précédentes,
    caractérisé en ce qu'un dispositif d'entraînement séparé est associé au premier chariot (20), le premier chariot (20) étant couplé à l'écrou qui peut se déplacer sur la broche filetée.
  6. Dispositif (10) selon l'une des revendications précédentes,
    caractérisé en ce qu'un dispositif d'entraînement séparé est associé au deuxième chariot (22), le deuxième chariot (22) étant couplé à l'écrou qui peut se déplacer sur la broche filetée.
  7. Dispositif (10) selon l'une des revendications 2 à 6,
    caractérisé en ce qu'un dispositif d'entraînement séparé est associé au chariot de positionnement (30), le chariot de positionnement (30) étant couplé à l'écrou qui peut se déplacer sur la broche filetée.
  8. Dispositif (10) selon l'une des revendications précédentes,
    caractérisé en ce que le rouleau (69) ou les surfaces de rampe (70) peuvent, sous précontrainte par ressort, se déplacer par rapport à l'écrou (66) ou au chariot (20, 22) correspondant.
  9. Dispositif (10) selon l'une des revendications précédentes,
    caractérisé en ce que le rouleau est disposé sur l'écrou et en ce qu'un coulisseau (50, 68) précontraint par ressort et réalisé d'un seul tenant avec les surfaces de rampe est guidé de manière mobile sur le chariot correspondant, ce coulisseau (50, 68) se déplaçant, lors d'un déplacement relatif de l'écrou et du chariot correspondant, sensiblement dans une direction orthogonale à la direction dudit déplacement relatif, contre la précontrainte par ressort.
  10. Dispositif (10) selon l'une des revendications précédentes,
    caractérisé en ce qu'au moins un interrupteur fin de course est associé au dispositif de couplage, lequel interrupteur est activé à l'atteinte d'une distance prédéterminée lors d'un déplacement relatif entre l'écrou et le chariot correspondant.
  11. Dispositif (10) selon l'une des revendications précédentes,
    caractérisé en ce qu'un indicateur de position servant à déterminer la position actuelle du chariot par rapport à la base est associé à au moins un des chariots, préférentiellement à chacun des chariots.
  12. Dispositif (10) selon l'une des revendications précédentes,
    caractérisé en ce qu'au moins un interrupteur fin de course de sécurité est associé à chaque chariot, le dispositif d'entraînement stoppant à l'atteinte de la position finale prédéfinie par l'interrupteur fin de course.
  13. Procédé pour maintenir et pour positionner entre deux pointes des pièces à usiner (36) de longueur différente à l'aide d'un dispositif (10) selon l'une des revendications précédentes, comprenant les étapes suivantes :
    A) le positionnement dans une zone située entre les pointes de la pièce à usiner destinée à être maintenue,
    B) l'entrée en contact de la pièce à usiner avec la pointe de maintien à un endroit de serrage de la pièce à usiner tourné vers la pointe de maintien,
    C) le déplacement du deuxième chariot pour l'entrée en contact de la pièce à usiner avec la contre-pointe à un endroit de contre-serrage de la pièce à usiner tourné vers la contre-pointe,
    D) l'entraînement du deuxième chariot en direction du premier chariot après l'entrée en contact de la pièce à usiner avec la contre-pointe à l'endroit de contre-serrage,
    E) la détection d'une précontrainte s'établissant à l'étape D ou d'une grandeur caractéristique de cette précontrainte et
    F) la désactivation du dispositif d'entraînement associé au deuxième chariot à l'atteinte d'une précontrainte de serrage prédéterminée.
  14. Procédé selon la revendication 13,
    caractérisé en ce que l'étape A) est exécutée à l'aide d'un chariot de positionnement qui maintient en position pendant le serrage la pièce à usiner.
  15. Procédé selon la revendication 14,
    caractérisé en ce qu'à l'étape B), le premier chariot est couplé de manière rigide à l'écrou de son dispositif d'entraînement et, après l'entrée en contact de la pièce à usiner, ensuite déplacé sur une distance prédéterminée vers le chariot de positionnement, le chariot de positionnement étant dévié par rapport à l'écrou de son dispositif d'entraînement sous précontrainte par ressort, puis stoppé à l'atteinte d'une précontrainte limite prédéterminée ou d'une déviation limite prédéterminée du chariot de positionnement, et que le premier chariot est déplacé en arrière pour réduire la précontrainte et la déviation du chariot de positionnement.
  16. Procédé selon la revendication 15,
    caractérisé en ce que le premier chariot est déplacé en arrière sur une distance telle que la précontrainte et la déviation du chariot de positionnement sera proche de zéro ou juste égale à zéro.
  17. Procédé selon l'une des revendications 13 à 16,
    caractérisé en ce qu'à l'étape E), il y a tout d'abord détection de l'atteinte d'une précontrainte limite prédéterminée ou d'une déviation limite prédéterminée, et qu'à l'atteinte de la précontrainte limite ou de la déviation limite prédéterminées, il y a ensuite déplacement sur une distance de serrage prédéterminée de l'écrou du dispositif d'entraînement associé au deuxième chariot.
EP05001961.1A 2004-03-16 2005-01-31 Dispositif et procédé pour maintenir et positionner des pièces de longueurs diverses entre-pointes Not-in-force EP1577059B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004012823 2004-03-16
DE102004012823A DE102004012823A1 (de) 2004-03-16 2004-03-16 Vorrichtung und Verfahren zum Einspannen und Positionieren von Werkstücken unterschiedlicher Länge zwischen zwei Spitzen

Publications (3)

Publication Number Publication Date
EP1577059A2 EP1577059A2 (fr) 2005-09-21
EP1577059A3 EP1577059A3 (fr) 2006-03-29
EP1577059B1 true EP1577059B1 (fr) 2016-10-12

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EP05001961.1A Not-in-force EP1577059B1 (fr) 2004-03-16 2005-01-31 Dispositif et procédé pour maintenir et positionner des pièces de longueurs diverses entre-pointes

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US (1) US7165483B2 (fr)
EP (1) EP1577059B1 (fr)
DE (1) DE102004012823A1 (fr)

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US9233428B2 (en) 2011-12-23 2016-01-12 Williams & White Machine Inc. Computer controlled multiple axis grinding machine for grinding saw blades
JP6854118B2 (ja) * 2016-12-19 2021-04-07 トーヨーエイテック株式会社 研削盤用センタ及びそれを用いた研削方法
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US20050204880A1 (en) 2005-09-22
EP1577059A2 (fr) 2005-09-21
US7165483B2 (en) 2007-01-23
DE102004012823A1 (de) 2005-10-06

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