EP1638711B1 - Machine et procede d'estampage de pieces - Google Patents

Machine et procede d'estampage de pieces Download PDF

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Publication number
EP1638711B1
EP1638711B1 EP03729769A EP03729769A EP1638711B1 EP 1638711 B1 EP1638711 B1 EP 1638711B1 EP 03729769 A EP03729769 A EP 03729769A EP 03729769 A EP03729769 A EP 03729769A EP 1638711 B1 EP1638711 B1 EP 1638711B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
embossing
workpiece holder
relation
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.)
Expired - Lifetime
Application number
EP03729769A
Other languages
German (de)
English (en)
Other versions
EP1638711A1 (fr
Inventor
Peter Geser
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.)
Ernst Grob AG
Original Assignee
Ernst Grob AG
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 Ernst Grob AG filed Critical Ernst Grob AG
Publication of EP1638711A1 publication Critical patent/EP1638711A1/fr
Application granted granted Critical
Publication of EP1638711B1 publication Critical patent/EP1638711B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0004—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the movement of the embossing tool(s), or the movement of the work, during the embossing operation
    • B44B5/0019—Rectilinearly moving embossing tools
    • B44B5/0028—Rectilinearly moving embossing tools cooperating with rotating workpieces

Definitions

  • the present invention relates to an embossing machine according to the preamble of claim 1, a method for embossing workpieces according to the preamble of claim 7 and the use of such embossing machine.
  • Embossing machines have long been known in various designs.
  • the main tool of these machines is a punch, which is brought against the usually resting on a die or against it adjacent workpiece by applying pressure to a defined depth in abutment.
  • the embossing achieves a plastic deformation of the material on the frosted area of the workpiece.
  • a recess is created on the side of the punch and, if necessary, a bulge is created on the side of the die.
  • the forces applied for this purpose are conventionally transmitted either mechanically via an eccentric shaft or hydraulically directly to the punch.
  • the conventional mechanical machines usually have very large dimensions, since the force must be built and transmitted directly at the location of the stamp, and are therefore suitable for the processing of large items.
  • the hydraulic machines can, since the pressure build-up separated from Stamp is made, also be smaller and are also suitable for the machining of smaller parts.
  • This machine is particularly well suited for relatively small hollow cylindrical workpieces, in which the punches resp. Embossments along a single, defined radius must be rotationally symmetrical.
  • the object of the present invention was to find an embossing machine, which allows accurate, fast embossing in particular of rotationally symmetrical workpieces, wherein the embossments at different radial positions with mutually different wall inclinations resp. Curvatures must be performed.
  • the workpiece holder is movable on the one hand in a plane relative to the machine frame, and on the other hand is pivotable about an axis perpendicular to this plane, the workpiece can be quickly and easily brought into the appropriate processing position.
  • the machining of the imprints to be applied generally along the circumference of the workpiece at defined intervals can preferably be accomplished simply by arranging the retaining mandrel of the workpiece rotatably in the workpiece holder.
  • this rotary drive which is advantageously provided with a control for exact positioning, housed directly in the workpiece holder.
  • a counter-holder is preferably mounted in the workpiece holder, which is designed to be rotatable. This ensures a reliable and rotationally fixed fixation of the workpiece in the workpiece holder. At the same time, however, the workpiece can also be easily applied to the workpiece holder resp. remove from this again.
  • a sensor is preferably used.
  • This sensor preferably an optical sensor, is advantageously arranged directly on the workpiece holder and detects the position of the embossments already carried out. Based on this information, it is possible by means of a correspondingly established control, which controls the rotation of the retaining mandrel, simple and precise, to pivot the workpiece into the correct position for the following stamping operation.
  • Such workpieces are, for example, converter plates for use in automatic transmissions, such as those used in large numbers in vehicles.
  • converter plates for use in automatic transmissions, such as those used in large numbers in vehicles.
  • these are relatively small workpieces, in which the embossments must be carried out with high precision, since these serve to receive the guide vanes.
  • the embossing machine according to the invention has a feed resp. Removal device for the workpieces, which automatically feeds the workpieces to the workpiece holder resp. this removed after processing.
  • a processing station essentially has the punch and associated die and in each case an associated workpiece holder on.
  • the transport from one processing station to the next can be done for example by the feeding and removal device.
  • FIG. 1 schematically shows the longitudinal section through an embossing machine according to the invention.
  • the workpiece 1 to be machined is held in a workpiece holder 15, which is connected to the machine frame 16.
  • the workpiece 1 is held rotatable about its axis of symmetry w.
  • the eccentric shaft 4 is driven.
  • the eccentric shaft 4 is arranged coaxially with the control disk 5.
  • the control disk 5 has on its underside a control track in the form of a circumferential groove 6.
  • the groove 6 may be formed, for example, as eccentric to the axis of rotation of the eccentric shaft formed, circumferential groove. In this groove 6 engages a pin 7, which is connected to the feed carriage 2.
  • the delivery of the feed carriage 2, for example, via a threaded spindle 18 of a mechanical or electric drive 19 which is connected to the machine frame 16th is firmly connected to be set in the direction of the axis h to the workpiece 1.
  • This setting is preferably NC controlled.
  • the eccentric shaft 4 is mounted in the die frame 8, which is guided in parallel in the direction of the machining axis h slidably in the machine frame 16.
  • the die frame 8 is now according to the formation of the groove 6 of the control disk 5 periodically moved in his leadership back and forth, bringing the arranged at the end of Matrizenrahmens 8 die 9 against the corresponding outer side of the workpiece 1 comes into abutment. is lifted from it. According to the formation of the groove 6, this movement takes place with a larger or smaller path, in each case once per revolution.
  • a connecting rod 10 is arranged, which is connected for example via a connecting pin 11 with the punch arm 12.
  • This punch arm 12 is likewise arranged displaceably in the die frame 8 in the radial direction with respect to the workpiece axis w.
  • control disk 5 and eccentric pin 17 Due to the illustrated arrangement of the eccentric shaft 4, control disk 5 and eccentric pin 17, a coupled, positively driven movement of both the die 9 and the punch 13 is effected, wherein the relative movement of the punch 13 with respect to the workpiece 1 depending on the design and arrangement of the groove. 6 the control disk 5 in relation to the stroke of the eccentric pin 17 may be very small.
  • the workpiece holder 15 is now according to the invention designed such that therein the workpiece 1 is held rotatable about both the axis of symmetry w, but can also perform a vertical movement along the axis v and in addition a pivoting movement about the axis s, which is perpendicular to the axis h and v , can perform.
  • punch 13 and die 9 can be moved along the axis h resp. be positioned.
  • the intended embossing can be carried out by defined defined rotational movements about the axis w with high precision along the circumference of the workpiece 1.
  • dish-shaped at the edge of a concave or convex surface having workpieces 1 can be processed by this machine very precise and fast.
  • the starting position of the workpiece 1 can be easily determined and adjusted. This means that non-contiguous imprints in a defined position can be created quickly with high precision. This is required, for example, for components of automatic transmissions, such as Transducer plates, in which subsequently guide vanes must be used in these embossings. Very high demands are made on the precision of the embossing itself as well as their positioning on the workpiece 1.
  • a device in which several, for example two or three such embossing stations are arranged and operated parallel to one another and the workpieces 1 are completely finished Processing on one of these stations the next station to be supplied.
  • the workpieces 1 can be processed practically parallel and a very high production rate can be achieved.
  • FIG. 2 shows, in a smaller detail, the processing area of the embossing machine according to the invention in more detail.
  • the workpiece 1 is already brought by the process and pivoting of the workpiece holder 15 in the desired processing position.
  • the point to be machined of the workpiece 1 is exactly in the processing axis h of the embossing machine, ie between the punch 13 and the die 9.
  • the interaction of the movements of the punch 13 and die 9 in a known manner the embossing process can now be triggered, the position of the workpiece 1 remains unchanged.
  • several embossments along the circumference of the workpiece 1 at regular, defined intervals must be attached, this can be easily by rotating the workpiece 1 to the workpiece axis resp.
  • a counter-holder 21 is provided, which reliably and the workpiece 1 against unintentional rotation pressed against the retaining mandrel 20.
  • the counter-holder 21 is advantageously arranged axially movable on the workpiece holder 15 in order to release the workpiece 1 again.
  • the insertion of the workpiece 1 in this processing position au ground the starting position of the workpiece 1 'shown in dashed lines can be seen.
  • the workpiece 1 is compared to the machining axis h in a vertical position, and can be introduced from top to bottom between the punch 13 'and die (not shown here).
  • the workpiece 1 can be brought by combined lowering and pivoting in the position shown in Figure 2, i. the position of the axis of rotation s' shifts to position s.
  • punch 13 and die 9 are moved together to their original position. Through these common, coordinated movements virtually every position of the workpiece can be brought into a processing position between the punch 13 and die 9.
  • FIG. 3 also shows the charging or charging situation.
  • the workpiece holder 15 is pivoted such that the workpiece 1 comes to lie upwards. From a feed device 22, the workpiece 1 is lowered down until it reaches the holding mandrel 20 in support. Subsequently, the counter-holder 21 can be positioned over the workpiece 1 and press this from above against the retaining mandrel. Now the workpiece holder 15 can be moved according to the previous description, ie be moved and swiveled, the workpiece 1 is held reliably.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Claims (10)

  1. Machine à estamper avec un bâti de machine (16), un poinçon (13), une matrice (9) et un support de pièce (15) destiné à recevoir une pièce (1), dont la matrice (9) est maintenue dans un cadre de matrice (8) guidé de façon mobile et arrangé parallèlement en rapport à l'axe de travaille (h) qui est guidé dans le bâti de machine (16) de façon mobile par rapport au support de pièce (15) par un disque de commande (5) et le poinçon (13), arrangé au bras de poinçon (13) guidé de façon mobile dans le cadre de matrice (8), est lié à un arbre excentrique (4) qui est logé de façon à pouvoir tourner dans le cadre de matrice (8) de la matrice (9), l'arbre excentrique (4) et le disque de commande (5)étant couplés directement l'un à l'autre et reliés à un arbre d'entraînement (3), caractérisé en ce que le support de pièce (15) est disposé de façon mobile envers le cadre de matrice (8) dans une axe de guidage (v) perpendiculaire en rapport de l'axe de travaille (h) et perpendiculaire en rapport du plan de déplacement du cadre de matrice (8) et disposé de façon pivotant dans l'axe de rotation (s) perpendiculaire par rapport de l'axe de travaille (h).
  2. Machine à estamper selon la revendication 1, caractérisée en ce que le support de pièce (15) présente une broche de maintien (20) et un anti-support (21) guidé de façon mobile pour la pièce (1), dont la broche de maintien (20) est orientée perpendiculaire par rapport à l'axe de rotation (s).
  3. Machine à estamper selon la revendication 2, caractérisé en ce que la broche de maintien (20) est arrangée pivotante dans le support de pièce (15) par une installation d'actionnement, de préférence autour de son axe de positionnement (w).
  4. Machine à estamper selon l'une des revendications 1 à 3, caractérisé en ce que le support de pièce (15) présente au moins un senseur pour détecter des empreintes ou des marquages dans la pièce (1), de préférence un senseur optique.
  5. Machine à estamper selon l'une des revendications 1 à 4, caractérisé en ce qu'il comporte encore une installation d'alimentation, par laquelle des pièces (1) sont alimenté ou retiré sur ou du support de pièce (15).
  6. Machine à estamper selon l'une des revendications 1 à 5, caractérisé en ce que plusieurs poinçons (13) et matrices (9) sont arrangées parallèlement entres elles dans le bâti de machine (16) comme stations de travaille séparés présentant respectivement des supports de pièces (15) séparés.
  7. Procédé pour appliquer des empreintes ou des marquages aux pièces (1) axial-symétriques en forme d'assiettes le long du moins d'une ligne circonférence avec une machine à estamper selon l'une des revendications 1 à 6, caractérisé en
    alimenter la pièce (1) dans un support de pièce (15) et le maintenir centré;
    livrer le support de pièce (15) par rapport à la machine à estamper avec un mouvement droit et le tourner autour une axe de rotation (s) perpendiculaire par rapport à l'axe de travaille (h) de façon que la ligne circonférence d'être muni avec une estampe va être situé entre le poinçon (13) et la matrice (9) de la machine à estamper,
    dont le poinçon (13) et la matrice (9) sont éventuellement déplacées coordonnées le long de l'axe de travaille (h);
    ensuite chaque fois effectuer des processus d'estamper avec poinçon (13) et matrice (9) sur la pièce (1), dont la pièce (1) va être tourner par un angle prédéterminé autour de son axe (w) avec le support de pièce (15) chaque fois entre deux processus d'estamper;
    ensuite éventuellement tourner de nouveau le support de pièce (15) autour de son axe de rotation (s) envers une position ultérieure, dont éventuellement le support de pièce (15) va être déplacé de nouveau par rapport à la machine à estamper et/ou le poinçon (13) et matrice (9) le long de l'axe de travaille (h) et effectuer de nouveau des processus d'estamper sur la pièce (1) ;
    dernièrement de tourner le support de pièce (15) autour de son axe de rotation (s) envers son position initiale et le déplacer éventuellement par rapport à la machine à estamper et après d'enlever la pièce (1) traitée du support de pièce (15) .
  8. Procédé selon la revendication 7, caractérisé en ce que la pièce (1) va être fourni dans au moins deux stations de travailles de la machine à estamper arrangées parallèlement entre elles et va être travaillée la dedans.
  9. Procédé selon la revendication 7 ou 8, caractérisé en ce qu'avant un processus de travaille consécutif la position d'une marque déjà établi va être détecté par un senseur, de préférence un senseur optique, et basé sur l'évaluation de cette détection la pièce (1) va être tournée autour de son axe (w) par le support de pièce (15) de façon pour établir une position défini relative de la marque déjà établi par rapport au poinçon (13), ou bien dans la station de travaille actuelle ou bien dans la station de travaille consécutif.
  10. Utilisation d'une machine à estamper selon l'une des revendications 1 à 6 pour l'usinage des pièces (1) axial-symétriques cylindriques creuses, de préférence avec une surface concave ou convexe.
EP03729769A 2003-06-24 2003-06-24 Machine et procede d'estampage de pieces Expired - Lifetime EP1638711B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2003/000411 WO2004112982A1 (fr) 2003-06-24 2003-06-24 Machine et procede d'estampage de pieces

Publications (2)

Publication Number Publication Date
EP1638711A1 EP1638711A1 (fr) 2006-03-29
EP1638711B1 true EP1638711B1 (fr) 2007-08-01

Family

ID=33520331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03729769A Expired - Lifetime EP1638711B1 (fr) 2003-06-24 2003-06-24 Machine et procede d'estampage de pieces

Country Status (5)

Country Link
EP (1) EP1638711B1 (fr)
AT (1) ATE368538T1 (fr)
AU (1) AU2003240353A1 (fr)
DE (1) DE50307842D1 (fr)
WO (1) WO2004112982A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2881976B1 (fr) * 2005-02-15 2008-10-03 Cer Soc Par Actions Simplifiee Machine et procede de marquage d'un objet
DE102005019693A1 (de) * 2005-04-28 2006-11-02 Schaeffler Kg Verfahren und Vorrichtung zum Erzeugen einer Rändelung auf der Oberfläche eines Werkstückes
IT202000031460A1 (it) * 2020-12-18 2022-06-18 Form 5 S R L Marcatrice per generare un’impronta su di una superficie da marchiare

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE237417T1 (de) * 1999-07-27 2003-05-15 Ernst Grob Ag Kaltwalzmaschine Stanz- und prägemaschine

Also Published As

Publication number Publication date
DE50307842D1 (de) 2007-09-13
AU2003240353A1 (en) 2005-01-04
WO2004112982A1 (fr) 2004-12-29
ATE368538T1 (de) 2007-08-15
EP1638711A1 (fr) 2006-03-29

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