EP1204496B1 - Procede pour extraire un outil d'un objet creux, et outil pour l'usinage d'un objet creux - Google Patents

Procede pour extraire un outil d'un objet creux, et outil pour l'usinage d'un objet creux Download PDF

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Publication number
EP1204496B1
EP1204496B1 EP20000958388 EP00958388A EP1204496B1 EP 1204496 B1 EP1204496 B1 EP 1204496B1 EP 20000958388 EP20000958388 EP 20000958388 EP 00958388 A EP00958388 A EP 00958388A EP 1204496 B1 EP1204496 B1 EP 1204496B1
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EP
European Patent Office
Prior art keywords
ram
segments
wedge
hollow object
ram segments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP20000958388
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German (de)
English (en)
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EP1204496A1 (fr
Inventor
Peter Kettner
Andreas Dietrich
Hubert Nägele
Manfred Hirschvogel
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Hirschvogel Umformtechnik GmbH
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Hirschvogel Umformtechnik GmbH
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Priority claimed from DE19943805A external-priority patent/DE19943805B4/de
Application filed by Hirschvogel Umformtechnik GmbH filed Critical Hirschvogel Umformtechnik GmbH
Publication of EP1204496A1 publication Critical patent/EP1204496A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • B21K1/765—Outer elements of coupling members

Definitions

  • the invention relates to a method and a tool according to the preamble of claims 1 and 4.
  • the field of application of the present invention lies particularly in the field the production of external parts of constant velocity joints.
  • the outer part of such a joint has a substantially cylindrical inner surface.
  • the grooves There are several sets, preferably helical Grooves arranged, the grooves extending in the opposite direction of rotation Show helical lines.
  • the grooves have normally a straight line and are opposite the axis of rotation of the corresponding joint part, for example inclined at an angle of approximately 16 °, instead of being exactly helical.
  • Balls engage the grooves and are held by a cage, due to the intersecting configuration the grooves the balls are held in the bisecting plane of the joint, when the joint parts are angled so that the joint has synchronous properties be awarded.
  • FIG. 4 shows schematically how such parts are manufactured in practice become. Starting from a slightly open position of the chalice-like outer part a so-called retraction movement is carried out, in which the outer walls of the goblet-shaped outer part can be pressed inwards, as schematically by arrows is indicated.
  • the stamp in its processing position in a die If the hollow object is located, it is stamped through the die pressed, the peripheral wall of the hollow object with it in a cross-groove construction arranged grooves drawn in and against the corresponding to the grooves arranged and shaped stamp segments is pressed. After this move in the hollow object is first pulled back, so that the first sentence the stamp segments move inward and out of engagement with the grooves can be brought. Then the one remaining in the grooves can then second set of stamp segments are pulled axially out of the hollow object, the punch being rotated according to the slope of the grooves.
  • This known method and the known device are complex, namely both in terms of the design of the tool and in terms of Demolding process steps.
  • demolding the stamp segments it is necessary two successive demolding processes, namely on the one hand the Movement of the first set of stamp segments into a release position and then required it the axial demolding of the second set of stamp segments, this with the punch must be turned according to the slope of the grooves.
  • the known The tool must therefore be designed so that the stamp is the specific one Can perform screw movement. This is not only a special drive, but also a special screw guide is required.
  • Another disadvantage of the known method and the known device is in that the first set of stamp segments by mechanical contact with the Contours of the tool in the grooves displaced into its release position become. Such a displacement contact leads to rapid functional operation, what is desirable is to strike the first set of stamp segments if the Stamp is rotated during demolding and the first set of stamp segments through the Displacement contact is displaced into the release position. This is one essential stress of the first set of stamp segments and therefrom resulting wear on both the hollow object and the stamp specified.
  • DE 44 33 991 A1 describes a tool for producing undercut Workpieces known, which consists of several stamp segments on the Circumference of a mandrel are arranged.
  • the tool also has one Slide-in device which actively engages the stamp segments by means of spring force moved a release position so that the stamp segments - without a Need to perform rotary motion - be removed from the workpiece can.
  • the invention has for its object a method of the aforementioned Kind of simplify.
  • the movement of the stamp segments in the Release position to be improved.
  • stamp segments are passed through Contracting movements in their release position, so that a Rotational movement of the stamp can be omitted and the insertion movement of the Stamp segments are sufficient to demold them.
  • a Rotational movement of the stamp can be omitted and the insertion movement of the Stamp segments are sufficient to demold them.
  • another axial Relative movement between the hollow object and the stamp can be this Axially remove parts from each other in a simple manner, the hollow object from Stamp is separated.
  • the process according to the invention can therefore be carried out with a significantly simpler one Carry out tool as it includes a screw movement for the stamp an accompanying tour is not required.
  • the tool is designed so that the stamp segments due to an axial movement with the help of a wedge or tapered insertion device in their Preliminary release position, with a displacement contact and one out of it resulting wear between the die segments and the hollow object is avoided.
  • the invention is further based on the object of a tool in Preamble of claim 4 specified type so that the Stamp segments or the stamp segments without displacement contact with the hollow Object can be removed from the mold.
  • the ram segments each have a wedge or cone insert device assigned so that it does not require unscrewing.
  • the ram segments there is therefore no design displacement between those concerned Stamp segments and the hollow object during demolding instead and therefore there is also no wear on the Stamp segments and on the hollow object and from the displacement contact resulting disorders.
  • Figure 1 shows the main parts of a tool according to the invention in axial section.
  • the main parts are a die 1 in the form of a hollow cylindrical body which at present embodiment with a vertical central axis 2 in one Die holder 3 is mounted, which is the lower part of a press can.
  • a stamp designated 4 in its entirety a stamp holder 5 attached in a vertical guide, not shown a drive, not shown, with the plunger 4 is vertically displaceable, as is the case with Double arrow 5a illustrates, and which is the top of a press can.
  • stamp ring 6 on the underside of the Stamp holder 5 for example fixed and a scraper 7 below the Stamp holder 5 arranged vertically displaceable, which will be described later becomes.
  • the stamp 4 consists of a dome 8, distributed over the circumference of several, for Example 6 pieces, stamp segments 9a, 9b arranged and radial relative to the mandrel 8 and are axially displaceable.
  • a tool 10 formed in this way serves a hollow object 11 when The present embodiment, the outer part of a constant velocity joint, in the area to form a peripheral wall 12 which is an integral part of a cup-shaped body 13, from the bottom wall of which a pin 14 extends coaxially.
  • the hollow article 11 is in a prefabricated form in which the Circumferential wall 12 is preformed inwards, as is the drawing on the shows the left side of the central axis 2, in which the hollow object 11 and the Tool 10 are in an intermediate stage of a manufacturing process. Right from the central axis 2 are the hollow object 11 and the tool 10 in a further process stage, which will be described.
  • each Groove pairs are provided which are opposite to each other obliquely or helically run.
  • Such a groove is in a constant velocity joint under the Designation "Cross-Groove" known per se and therefore does not need any closer to be described.
  • the grooves 16, 17 are in the prefabrication form Inner lateral surface 15 has already been pre-shaped, as is indicated by the dashed lines on the left is.
  • stamp segments 9a, 9b each point on the outside of a lower one End section 18, with which they into the recess 19 of the cup-shaped body 13th are movable in each case a bead 21a, 21b shown in simplified form, its cross-sectional shape and direction of extension of an associated groove 16, 17 corresponds so that the longitudinal axes of the beads 21a, 21b cross each other.
  • Stamp segments 9a, 9b is dimensioned several times larger than the depth b Recess 19. In the present exemplary embodiment, the length a is approximately four times dimensioned as large as the depth b. As already mentioned, the stamp segments 9a, 9b preferably at the same time radially or with respect to the central axis 2 Can be removed and inserted axially parallel.
  • stamp segments 9a, 9b corresponds as shown in FIG. 1.
  • a wedge drive 26a, 26b is provided with radial displacement of the stamp segments 9a, 9b wedge or cone surfaces 27, 28 extending parallel to each other on the Shell surface of the dome 8 and on the inside of the stamp segments 9a, 9b provided, in their end regions, so that an axial center distance c between the wedge drives 26a, 26b associated with a respective stamp segment 9a, 9b exists, which is also a multiple of depth b.
  • Wedge surfaces 27, 28 are each arranged radially offset from one another and in the direction on the stamp holder 5 divergent, so that the stamp segments 9a, 9b each at one axial displacement relative to the mandrel 8 to the hollow object 11 radially towards inside and with an opposite axial displacement radially outwards parallel be moved.
  • the radial stroke d of the stamp segments 9a, 9b is dimensioned larger than that Depth of the grooves 16, 17.
  • the wedge drives 26a, 26b are coordinated with one another in such a way that that the position of the beads 21a, 21b in the extended position of the position of the Grooves 16, 17 in the completion of the peripheral wall 12 corresponds and in the radial inserted position, the beads 21a, 21b are within the hollow cylindrical Free space of the recess 19 are.
  • the stamp segments 9a, 9b close the free ones facing the hollow object 11 Ends and the free end of the mandrel 8 approximately from each other.
  • the stamp segments 9a, 9b these are simultaneously axially in one free end 8a of the mandrel 8 protruding position shifted (not shown) what is still described.
  • the wedge or cone surfaces 27, 28 of the front wedge drive 26a are located in the free end area 8a of the cathedral and in the front end area 18, in which are also the beads 21a, 21b outside.
  • the stamp segments 9a, 9b each have an essentially radially inward direction Insert device 31 assigned, which they pushed out radially Moves the working position inwards into a release position, this Insert device 31 each with a longitudinally effective adjustment device cooperates with which the stamp segments 9a, 9b from their with respect to the mandrel 8th rear working position in the front release position to the free end portion 8a of the Doms 8 are longitudinally displaceable.
  • the insertion device 31 is also by a wedge drive 33 with an outer wedge or cone surface 34 on the outside of the associated stamp segment 9a, 9b and an inner wedge or cone surface 35 am Stamp ring 6 formed, the latter can be arranged in the through hole 24.
  • the Scraper already mentioned and designated by 7 is independent of the stamp holder 5 vertically displaceable, which is illustrated by the double arrow 37. He can by a ring or plate may be formed with a through hole 39 through which the stamp 4 extends with movement. To move the Scraper 7 can be provided a rod 41, the present one Embodiment in a vertical guide hole 42 in the stamp holder 5 and in Stamp ring 6 is mounted displaceably and by a drive, not shown and can be moved.
  • a hollow object 11 in a corresponding to the Prefabrication form of the hollow object 11 corresponding receiving hole 43 can be used.
  • the receiving hole 43 is through a bore 44 and conical bore extension 45 formed in the upper edge region of the die 1, whose cone angle W is the cone angle of the hollow object 11 in its Prefabrication form corresponds and the cross-sectional size of the bore 44 of the Cross-sectional size of the finished shape of the hollow article 11 corresponds, so that the latter in the receiving hole 43 is used so that the divergent peripheral wall 12 in the hole extension 45 is located.
  • the insertion of the possibly heated hollow Object 11 takes place in a specific position of the grooves 16, 17 with respect to the Circumferential direction, which corresponds to the position of the beads 21a, 21b.
  • stamp segments 9a, 9b moved into the recess 19, the front Ends of the stamp segments 9a, 9b and possibly also the front end of the Dome 8 butt against the bottom wall of the pot-shaped body 13 and the stamp 4th are advanced in one go into the stroke position shown on the right in the figure can, the peripheral wall 12 with its grooves 16, 17 against the beads 21a, 21b is retracted and the grooves 16, 17 reshaped or calibrated or if necessary, can also be completely molded, the molding process of the hollow object 11 is finished.
  • this working position is between the Circumferential wall 12 and the shaped segments 9a, 9b an axially effective Form-locking connection 46 is present, which is caused by the engagement of the beads 21a, 21b the grooves 16, 17 is conditional.
  • the hollow object 11 and the Stamp 4 moved together out of the die 1, for which one from below against the hollow object 11 can serve effective, not shown eject stamp.
  • the scraper 7 is part of the adjusting device for axial movement the stamp segments 9a, 9b relative to the mandrel 8 against the hollow object 11 advanced.
  • the stamp segments 9a, 9b take part in this forward movement since their beads 21a, 21b are in the grooves 16, 17 and thus the Positive connection 46 between the stamp segments 9a, 9b and the hollow Item 11 exists.
  • the wedge drives 33 prove to be Gearbox that the axial advance of the stamp segments 9a, 9b in a radial convert inward insertion movement 9d, causing the die segments 9a, 9b are simultaneously shifted inwards, namely in that the previously wedge and cone surfaces 34, 35 arranged close to each other and trigger the wedge drive effect. If the stamp segments 9a, 9b in their after the release position is in the shifted release position or Form-locking connection 46 with the hollow object 11 canceled so that this is also stripped from the stamp segments 9a, 9b or can fall off.
  • a retraction device 47 for the Stamp segments 9a, 9b with one or more arranged distributed around the circumference Springs 48, for example compression springs, biased.
  • the Retraction device 47 one or more stop parts 49 or a stop ring have a radial projection 51 at the rear end of the stamp segments 9a, 9b engages behind.
  • the stamp segments 9a, 9b pushed back into their starting position by the retraction device 47, wherein they simultaneously through the wedge drives 26a, 26b parallel to the outside in their working position be relocated.
  • the spring 48 is in one Blind hole 52 open at the top is arranged in the stamp holder 5 or in the stamp ring 6 and clamped between the bottom and the stop member 49.
  • the essential feature of the tool 10 according to the invention is therefore inevitable effective insertion device 31, the stamp segments 9a, 9b at their axial Moves advance radially inward into its release position, in which the Form-locking connection 46 is released and thus the hollow object 11 is free and can be stripped further or fall off in the present embodiment can.
  • This is a simple and trouble-free function with a simple Design of the tool 10 guaranteed.
  • the insertion device 31 is in the axial direction between the associated Wedge drives 26a, 26b arranged, the wedge or cone angle of the cone or Wedge surfaces 34, 35 on the one hand and 27, 28 on the other hand are essentially the same and in the working position according to the drawing, the cone or wedge surfaces 34, 35 of the Wedge drive 33 have only a small distance from each other. This is also essentially a parallel or radial displacement after guaranteed inside the stamp segments 9a, 9b.
  • the adjustment device 32 can also be formed by that a corresponding axially effective feed device directly to the Stamp segments 9a, 9b attacks.
  • all stamp segments 9a, 9b preferably moved simultaneously into the release position described above, so that a axial retraction movement of the stamp segments 9a, 9b and one if necessary required further axial movement of the dome 8 are sufficient to demould the Stamp 4 to effect from the hollow object 11.
  • the insertion device 31 only for the one or more shaped segments 9a or 9b of the one oblique course or Provide screw course of the associated beads 21a and 21b, so that only the a kind of stamp segments 9a or 9b is moved into the release position, while the other type remains in the working or engaging position.
  • a Such a configuration is required when pulling the or the ones in engagement located stamp segments one of the oblique or screw course of the Associated bead corresponding screwing motion, as in the beginning described prior art is the case.
  • the configuration according to the invention leads to a safe function, since that at least one stamp segment inevitably before its demolding Release position is moved and thus a trouble-free function is guaranteed.
  • the deformed hollow object is after the Demolding and retraction of the stamp after an ejection device ejected above and then, for example, by a suitable manipulator of the Tool removed.
  • the stroke of the punch 8 is dimensioned so that it after the retraction movement in the die 1 the hollow thus formed Object 11 can slide down out of the die 1. So there is a Procedure from position A, into which walls have not yet moved in a position B, in which the forming movement is completed, towards a position C, in which the stamp 8 the formed object 11 already down from the Has pushed out die 1. For demolding the stamp from the hollow Item 11 against the frictional forces acting on the contact surfaces between the Stamp segments and the inside of the wall of the hollow object 11 occur is now a slide 100, 101 inwards to over the top of the outer wall of the hollow object 11.
  • the slide device 100, 101 can now pull out the punch 8 upwards and the corresponding folding movements for the stamp segments can be controlled.
  • the stamp 8 has released upwards from the hollow object 11, the hollow falls Item 11 downwards and can for example by a conveyor belt transported for further processing.
  • FIG. 2 This embodiment according to FIG. 2 is compared to that of FIG. 1 advantageous that the ejector for the final ejection of the deformed Item 11 can be omitted upwards.
  • the slide device 100, 101 with Scraper effect which is additionally necessary in the embodiment of Figure 2 in contrast, it is structurally much less complex.

Claims (9)

  1. a) Procédé d'extraction d'un poinçon (4) d'un objet creux (11) comportant plusieurs gorges (16, 17) mutuellement opposées au niveau de sa surface d'enveloppe intérieure (15) et dont les axes médians longitudinaux s'étendent en étant inclinés par rapport au plan médian longitudinal associé (Cross-Groove), procédé dans lequel
    b) le poinçon (4) fait partie d'un outil (10) comportant une matrice (1) destinée à mettre en forme l'objet creux (11) et comporte une broche (8) ainsi que plusieurs segments de poinçon (9a, 9b) qui sont répartis à sa périphérie et mutuellement opposés par rapport à son axe médian (2) et qui comportent chacun un renflement (21 a, 21 b) du côté extérieur,
    c) les segments de poinçon (9a, 9b), destinés à mettre en forme l'objet creux (11), sont écartés dans une position de travail, dans laquelle les renflements (21a, 21b) sont adaptés aux gorges associées (16, 17), par des surfaces prismatiques ou coniques (27, 28) qui sont situées sur la surface d'enveloppe de la broche (8) et sur les côtés intérieurs des segments de poinçon (9a, 9b) dans leurs zones d'extrémité libre et qui se rencontrent lors du mouvement relatif entre la broche (8) et les segments de poinçon (9a, 9b),
    d) et, après la mise en forme de l'objet creux (11), lesdits segments de poinçon sont rétractés dans une position de libération et sont retirés,
    caractérisé en ce que
    e) les segments de poinçon (9a, 9b) sont écartés par les premières surfaces coniques ou prismatiques (27, 28) et en même temps par des deuxièmes surfaces coniques ou prismatiques (27, 28) situées à une distance axiale (c) des premières surfaces coniques ou prismatiques (27, 28),
    f) les segments de poinçon (9a, 9b) sont obligatoirement rétractés et retirés par une troisième surface conique ou prismatique (35) sur les côtés extérieurs des segments de poinçon (9a, 9b) et par une pièce de contact, coopérant avec ladite troisième surface, sur une bague (6) de l'outil entourant les segments de poinçon (9a, 9b), lors d'un mouvement axial des segments de poinçon (9a, 9b) par rapport à la bague (6) en raison de mouvements de rétraction actifs dirigés transversalement à l'axe médian de la broche (8),
    g) la troisième surface conique ou prismatique (35) est placée par rapport à la distance (c) entre les première et deuxième surfaces coniques ou prismatiques (27, 28).
  2. Procédé selon la revendication 1, caractérisé en ce que l'objet creux (11) est chassé de la matrice (1) au moyen du poinçon (4) après le processus de mis en forme dudit objet puis le mouvement axial (9c) des segments de poinçon (9a, 9b) est réalisé.
  3. Procédé selon la revendication 2, caractérisé en ce que le mouvement axial (9c) est généré par extraction de l'objet creux (11) du poinçon (4).
  4. a) Outil d'usinage de gorges (16, 17) à la surface d'enveloppe intérieure (15) d'un objet creux (11), lequel outil comporte
    b) une matrice (1) comportant un trou de matrice (44) dans lequel peut être inséré l'objet creux (11),
    c) un poinçon (4) qui est fixé à un support de poinçon (5) et qui est monté avec ce support de poinçon de façon à pouvoir se déplacer axialement suivant un mouvement alternatif par rapport à la matrice (1),
    d) et qui comporte une broche (8) placée axialement par rapport au poinçon (4) et plusieurs segments de poinçon (9a, 9b) répartis à sa périphérie,
       lesquels comportent sur leur côté extérieur des renflements (21 a, 21 b) adaptés aux gorges (16, 17),
    e) lesquels sont mobiles par rapport à la broche (8) axialement et transversalement entre une position de travail correspondant aux gorges (16, 17) et une position de libération placée à l'extérieur des gorges (16, 17),
    f) lesquels sont montés dans une bague (6) qui entoure les segments de poinçon (9a, 9b),
    g) et lesquels peuvent être écartés pour être amenées dans la position de travail par un déplacement axial de la broche (8),
    h) des première et deuxième surfaces coniques ou prismatiques adaptées l'une à l'autre (27, 28), qui sont disposées sur la surface d'enveloppe de la broche (8) et sur les côtés intérieurs des segments de poinçon (9a, 9b) dans les régions d'extrémité libres de la broche (8) ainsi que des segments de poinçon (9a, 9b) et à une distance (c) axiale de ceux-ci, se rencontrant lors d'un mouvement relatif axial entre la broche (8) et les segments de poinçon (9a, 9b) et provoquant l'écartement des segments de poinçon (9a, 9b),
    i) et les segments de poinçon (9a, 9b) étant associés chacun à un dispositif d'insertion (31) qui est placé axialement entre les première et deuxième surfaces coniques ou prismatiques (27, 28) et qui permet d'amener activement dans leur position de libération les segments de poinçon (9a, 9b),
    caractérisé en ce que
    j) le dispositif d'insertion (31 ) est formé par des troisièmes surfaces coniques ou prismatiques (35) sur les côtés extérieurs des segments de poinçon (9a, 9b) et par une pièce de contact coopérant avec lesdites surfaces sur la bague (6) entourant les segments de poinçon (9a, 9b),
    k) les segments de poinçon (9a, 9b) étant disposées dans la bague (6) de manière à pouvoir se déplacer axialement,
    l) et des troisièmes surfaces coniques ou prismatiques (27, 28) en provoquant, lors du mouvement relatif entre les segments de poinçon (9a, 9b) et la bague en raison de mouvements de rétraction actifs dirigés transversalement à l'axe médian de la broche (8), une rétraction obligatoire et un retrait des segments de poinçon (9a, 9b).
  5. Outil selon la revendication 4, caractérisé en ce que le poinçon (4) est reçu dans la bague (6) avec un jeu de déplacement.
  6. Outil selon la revendication 4 ou 5, caractérisé en ce qu'il comporte un extracteur (7) destiné à extraire l'objet creux (11) du poinçon (4).
  7. Outil selon l'une des revendications précédentes 4 à 6, caractérisé en ce que les segments de poinçon (9a, 9b) sont associés chacun un dispositif de retrait (47) qui comporte un ou plusieurs ressorts (48) qui sont tendus lors du mouvement axial en avant des segments de poinçon (9a, 9b) et qui tendent les segments de poinçon (9a, 9b) dans leur position axiale de départ.
  8. Outil selon l'une des revendications précédentes 4 à 7, caractérisé en ce que la pièce de contact est également formée par une troisième surface conique ou prismatique (34 resp. 35).
  9. Outil selon l'une des revendications précédentes 4 à 8, caractérisé en ce que les angles des première, deuxième et troisième surfaces coniques ou prismatiques (27, 28, 34, 35) sont égaux.
EP20000958388 1999-08-19 2000-08-07 Procede pour extraire un outil d'un objet creux, et outil pour l'usinage d'un objet creux Expired - Lifetime EP1204496B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19939383 1999-08-19
DE19939383 1999-08-19
DE19943805A DE19943805B4 (de) 1999-08-19 1999-09-13 Verfahren zum Entformen eines Stempels aus einem hohlen Gegenstand und Werkzeug zum Bearbeiten von Rillen an der Innenmantelfläche eines solchen hohlen Gegenstands
DE19943805 1999-09-13
PCT/EP2000/007640 WO2001014081A1 (fr) 1999-08-19 2000-08-07 Procede pour extraire un outil d'un objet creux, et outil pour l'usinage d'un objet creux

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Publication Number Publication Date
EP1204496A1 EP1204496A1 (fr) 2002-05-15
EP1204496B1 true EP1204496B1 (fr) 2004-10-27

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EP20000958388 Expired - Lifetime EP1204496B1 (fr) 1999-08-19 2000-08-07 Procede pour extraire un outil d'un objet creux, et outil pour l'usinage d'un objet creux

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US (1) US6684678B1 (fr)
EP (1) EP1204496B1 (fr)
JP (1) JP2003507188A (fr)
AT (1) ATE280645T1 (fr)
AU (1) AU6993200A (fr)
ES (1) ES2226909T3 (fr)
WO (1) WO2001014081A1 (fr)

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JPH0718452Y2 (ja) * 1987-04-28 1995-05-01 株式会社小松製作所 等速ジヨイントの外輪加工用パンチ
FR2649024B1 (fr) * 1989-07-03 1994-05-13 Peugeot Automobiles Procede de fabrication d'une piece presentant une surface interne partiellement spherique et une extremite ouverte
JPH05185177A (ja) * 1992-01-10 1993-07-27 Honda Motor Co Ltd バルブスリーブの製造方法
DE4433991C2 (de) * 1994-09-23 1999-01-07 Doege Eckart Spreizwerkzeug zur Herstellung hinterschnittener Werkstücke
JP3723638B2 (ja) * 1995-09-27 2005-12-07 Ｎｔｎ株式会社 クロス溝を有する自在継手外輪の製造方法及び装置
JP3660034B2 (ja) * 1995-10-31 2005-06-15 Ｎｔｎ株式会社 等速自在継手外輪の製造用内型装置

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ES2226909T3 (es) 2005-04-01
EP1204496A1 (fr) 2002-05-15
JP2003507188A (ja) 2003-02-25
AU6993200A (en) 2001-03-19
ATE280645T1 (de) 2004-11-15
US6684678B1 (en) 2004-02-03

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