EP0425924A1 - Profilwalzmaschine für die Erzeugung von in ihrem Umfangsbereich profilierten, hohlzylindrischen oder topfförmigen Werkstücken aus Blech - Google Patents

Profilwalzmaschine für die Erzeugung von in ihrem Umfangsbereich profilierten, hohlzylindrischen oder topfförmigen Werkstücken aus Blech Download PDF

Info

Publication number
EP0425924A1
EP0425924A1 EP90120070A EP90120070A EP0425924A1 EP 0425924 A1 EP0425924 A1 EP 0425924A1 EP 90120070 A EP90120070 A EP 90120070A EP 90120070 A EP90120070 A EP 90120070A EP 0425924 A1 EP0425924 A1 EP 0425924A1
Authority
EP
European Patent Office
Prior art keywords
rolling machine
workpiece
tool holder
spindle
rotation
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Withdrawn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
EP90120070A
Other languages
German (de)
English (en)
French (fr)
Inventor
Helmut Dipl.-Ing. Wenzel
Karl-Heinz Dipl.-Ing. Köstermeier
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.)
Leifeld GmbH and Co
Original Assignee
Leifeld GmbH and Co
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 Leifeld GmbH and Co filed Critical Leifeld GmbH and Co
Publication of EP0425924A1 publication Critical patent/EP0425924A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels
    • B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
    • 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
    • B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/261—Making other particular articles wheels or the like pulleys

Definitions

  • the invention relates to a rolling machine according to the preamble of claim 1.
  • a device for pulling cylindrical can bodies in the rotation process is known.
  • the workpiece, the can body is placed on a core, the largest diameter of which is smaller than the smallest inner diameter of the finished workpiece.
  • the retraction is carried out with a retraction tool with a concave inner surface which at least partially envelops the core and can be retracted, the retraction tool preferably being a hollow cylinder which can be rotated about an axis and is mounted in a housing surrounding it. It is also provided here that the core and / or the pull-in tool can be driven, but no further details are given regarding the manner in which the tool is driven.
  • a disadvantage of this device is that the tool is adjusted relative to the workpiece by pivoting the tool housing about an axis parallel to the workpiece axis of rotation against the force of a return spring, the pivoting movement being effected by a cam roller running on the cam track is caused on the tool housing. It is therefore only possible to adjust in a single direction, which also does not run exactly radially, but on a curved path with a radius corresponding to the distance between the pivot axis of the tool housing and the contact area of the tool on the workpiece.
  • This device allows only simple forming with short forming paths and low accuracy requirements, such as. B. the retraction of can hulls, but not more complicated and higher precision forming, such as. B. the production of pulleys with appropriate concentricity.
  • the device is susceptible to wear due to the use of cam tracks and therefore requires a high level of maintenance.
  • Another rolling device is known from DE-OS 37 41 596.
  • the workpiece is surrounded by an annular tool, which is arranged eccentrically on an inner eccentric.
  • the inner eccentric in turn is located eccentrically on an outer eccentric.
  • the outer eccentric rotates together with the inner eccentric coaxially to the central axis of the workpiece.
  • the annular tool is moved in the radial direction so that it comes into engagement with and rolls on the workpiece while it performs an eccentric rotary movement around the stationary workpiece.
  • This device is considered to be disadvantageous in that it is not possible to set the relative rotation of the inner and outer eccentrics relative to one another, because both eccentrics rotate during the shaping process. As a result, the adjustment can only be made here A braking force acting on the inner eccentric is specified, which, due to the friction forces and mechanical inaccuracies that occur, does not allow the tool to be positioned exactly relative to the workpiece. Since with this device the workpiece stands still during its forming, the contact or contact area between the workpiece and the tool rotates. This has the consequence that the forces acting on the workpiece holder and thus the device constantly change their direction and the device must therefore have a very stable construction which is equally resistant in all directions of force application, which makes the device complex and heavy.
  • this device is considered to be disadvantageous in that the entire drive and forming forces can only be supplied via the external eccentric. On the one hand, this is unfavorable for the quality of the forming and on the other hand leads to a high mechanical load on the parts of the device which transmit the forces, which leads to increased wear and reduced operational reliability of the device.
  • a flanging and beading machine is known from DE-PS 750 476, in particular for processing tin can and vessel hulls.
  • This machine has two rollers fastened on parallel shaft ends and a roller ring loosely mounted between them, the roller ring being suspended on the lower of the two rollers and having a T-shaped cross section with an inwardly facing ring shoulder which fits into a guide groove in the lower one Roller engages.
  • a can body is pushed over a correspondingly shaped, with the shaft carrying the rolling ring rotating inner roller and reaches with its end region between the lower roller and the roller ring. By moving one of the shafts in the direction of the other shaft, the rollers are rotated in opposite directions Forming of the can body end area by means of the rolling ring.
  • This machine is considered to be disadvantageous in that only relatively imprecise reshaping can be carried out because of the loose arrangement of the rolling ring and the play associated with it. Since there is considerable friction between the rollers and the roller ring in addition to rolling friction, the machine is susceptible to wear and therefore requires a lot of maintenance. Nor is there any provision for the rollers to be adjustable in relation to one another in the axial direction, as a result of which the machine is restricted to very simple forming processes.
  • the exemplary embodiment of the rolling machine 1 shown has a machine frame 10 with a base 11 underneath it and a switch cabinet 12 mounted on the rear, ie on the left in FIG. 1.
  • a spindle 20 is provided in the upper machine part, the lower part of which is designed as a workpiece holder 2, this work piece holder 2 is preferably held interchangeably on the spindle 20.
  • the spindle 20 can be set in rotation about a vertical axis of rotation 21 by means of a rotary drive 22, the rotary drive essentially comprising an electric motor 23 and a belt drive 24, which are arranged in the upper part of the rolling machine 1.
  • This spindle 40 is rotatable about an axis of rotation 41 coinciding with the axis of rotation 21 of the first spindle 20.
  • the rotation of the second spindle 40 with the print head 4 is made possible by a further rotary drive 42, which again comprises an electric motor 43 and a belt drive 44.
  • the spindle 40 with the print head 4 and the associated rotary drive 42 are arranged in or on a print head support body 46, which runs along a slide guide 14 provided on the machine frame in the vertical direction, i. H. is displaceable in the direction of the axes of rotation 41 and 21.
  • an adjusting spindle 47 is arranged in the lower part of the printhead support body 46, by means of which the printhead 4 can be displaced in the vertical direction relative to the workpiece holder 2 by its rotation.
  • the rolling machine 1 shown comprises a tool holder 30 with annular, internally profiled tools 3, 3 'and 3 ⁇ arranged therein.
  • the tool holder 30 is in turn also formed as a substantially cylindrical hollow body and surrounds the tools 3, 3 'and 3 ⁇ , the tools 3, 3' and 3 ⁇ are rotatably but interchangeably arranged in the tool holder 30.
  • the tool holder 30 with the tools 3, 3 ', 3 ⁇ is rotatable about an axis of rotation 31, which depending on the operating position of the rolling machine 1 with the axis of rotation 21 of the spindle 20 and the workpiece take 2 coincides or runs parallel to this offset.
  • the tools 3, 3 ', 3 ⁇ surround the workpiece holder 2, the tools 3, 3', 3 ⁇ being spaced on all sides from the workpiece holder 2 in the operating state shown here. In this position, a workpiece, not shown here, can be placed on the workpiece holder 2 or removed from it.
  • the tool holder 30 is rotatably mounted within a tool holder support body 36 with the interposition of two roller bearings 35.
  • a rotary drive 32 which includes an electric motor 33 and a belt drive 34, is also used here to generate the rotary movement of the tool holder 30.
  • the belt drive 34 By means of this belt drive 34, the rotary movement generated by the electric motor 33 is transmitted to the upper part of the tool holder 30, which is located above the roller bearings 35 and is designed as a belt running surface.
  • the electric motor 33 is firmly connected to the tool holder support body 36.
  • the tool holder support body 36 with the tool holder 30, the tools 3, 3 ', 3 ⁇ and the rotary drive 32 is movable on the one hand in the vertical direction and on the other hand in the horizontal direction, ie here perpendicular to the plane of the drawing in FIG.
  • the tool holder support body 36 is arranged on a guide body 16, which in turn is displaceable on the machine frame 10 along a vertical slide guide 13.
  • an adjusting spindle 17 is provided on the guide body 16, which can be rotated in both directions of rotation by means of an electric motor 17 'arranged in the upper part of the rolling machine 1, as a result of which a corresponding change in height of the guide body 16 and thus the tools 3, 3 ', 3 ⁇ is made possible.
  • FIG. 1 also shows a loading and unloading device 6, by means of which workpieces to be machined can be fed and machined workpieces can be removed.
  • the loading and unloading device 6 has a workpiece handling arm 60 which is arranged in a horizontal plane and can be moved in the vertical direction by means of a lifting device 61 and can be pivoted in a horizontal plane by means of a pivoting device 62.
  • the workpiece handling arm 60 can be displaced in its longitudinal direction by means of a length adjustment device 63.
  • FIG. 2 of the drawing shows the rolling machine 1 in a front view, ie in a direction of view of the right side of the rolling machine 1 in FIG. 1.
  • the lower part of the rolling machine 1 is again formed by the base 11, from which the machine frame 10 extends upwards extends.
  • the electric motor 23 is again visible, which forms part of the rotary drive 22 for generating the rotation of the spindle 20 and the workpiece holder 2 connected therewith about its axis of rotation 21. 2, the spindle 20 with the workpiece holder 2 is largely covered by machine parts in front of it.
  • the print head 4 is again visible with the associated spindle 40, which can be rotated about the axis of rotation 41 coinciding with the axis of rotation 21.
  • the spindle 40 is mounted in the print head support body 46 and, together with it, can be displaced along the vertical slide guide 14 in the direction of the axes of rotation 41 and 21.
  • the associated rotary drive 42 with the electric motor 43 mounted laterally on the support body 46 can be seen below the print head support body 46.
  • the adjusting spindle 47 for the adjustment of the printhead 4 in the vertical direction relative to the workpiece holder 2 is visible again.
  • the tool holder support body 36 is visible here, on the right part of which the associated electric motor 33 is placed, from which the tool holder 30 with the tools 3, 3 ', likewise not visible, is hidden via the rotary drive 32, which is also hidden here. , 3 ⁇ can be driven.
  • the tool holder support body 36 with the parts arranged thereon namely in particular the tool holder 30 with the tools 3, 3 ', 3 ⁇ and the associated rotary drive 32 in the horizontal direction, which here as the direction z is marked, movable.
  • the axis of rotation 31 of the tool holder 30 coincides with the axis of rotation 21 of the workpiece holder 2.
  • the axis of rotation 31 of the tool holder 30 moves accordingly to the right.
  • an adjusting spindle 37 is provided on the tool holder support body 36, which is adjustable by means of a further electric motor 37 '.
  • a further electric motor 37 ' are the adjusting spindle 37 and its electric motor 37 'arranged on the guide body 16 visible in the background.
  • this guide body 16 can be displaced along the slide guide 13 in the vertical direction, ie in the y direction.
  • the loading and unloading device 6 shown in FIG. 1 is not shown in FIG. 2 for reasons of better clarity.
  • the tool holder support body 36 follows, which along another, horizontally, i. H. in Figure 3 in the plane of the drawing, sliding guide 15 is displaceable in the z-direction.
  • the adjustment movement is effected by the adjusting spindle 37 with its associated electric motor 37 '.
  • the hollow cylindrical tool holder 30 can be seen, through which the spindle 20 rotatable about the axis of rotation 21 extends.
  • the rotary drive on the tool holder support body 36 32 with the electric motor 33 and the belt drive 34 for rotating the tool holder 30.
  • the axis of rotation 31 of the tool holder 30 is identical to the axis of rotation 21 of the spindle 20.
  • the loading and unloading device 6 with its workpiece handling arm 60 is visible, the latter being moved into a position pivoted by 1800.
  • the workpiece handling arm 60 is pivoted about the vertical pivot axis of the pivoting device 62.
  • FIGS. 4a and 4b the rolling machine 1 is shown in an operating position in which the axes of rotation 21 and 31 of the workpiece holder 2 and tools 3, 3 ', 3 ⁇ coincide.
  • a prepared workpiece for. B. a hollow cylindrical or pot-shaped sheet metal body, placed on the workpiece holder and fixed by means of the print head 4 on this.
  • FIG. 4a by moving the tool holder 30 in the z direction, ie to the right in FIG. 4a, the profiled inside 39 of the first tool 3 is brought into contact with the peripheral region 51 of the workpiece 5.
  • the peripheral region 51 of the workpiece 5 is formed in the desired manner.
  • the speeds of the spindle 20 with the workpiece holder 2 and the tool holder 30 with the tool 3 are controlled in dependence on one another so that in the contact area between the profiled inside 39 of the tool 3 and the outside of the peripheral area 51 of the workpiece 5 practically only rolling friction and no sliding friction occurs.
  • the respective setting of the rolling machine in its z-direction is preferably determined and placed in a corresponding control unit which, depending on this and on the outer radius of the workpiece 5 and the speed of the spindle 20, tracks the speed of the tool holder 3 in a suitable manner.
  • the tool 3 can be brought back from all sides of the workpiece 5, more precisely its peripheral region 51, by moving the tool holder 30 in the z direction.
  • the second tool 3 'arranged within the tool holder 30' can be brought into the height of the outer circumference 51 of the workpiece 5 by moving the tool holder 30 downward in the y direction.
  • the profiled inside 39 'of the second tool 3' can now be brought into contact with the outer circumference 51 of the workpiece 5 in order to carry out a further shaping step. Accordingly, a final profiling with the profiled inside 39 ⁇ of the third tool 3 ⁇ can be carried out.
  • the tool holder 30 can then be moved back into its starting position and after the print head 4 has been moved down in the direction of its axis of rotation 41, the finished workpiece 5 can be removed from the workpiece holder 2.
  • the Workpiece 5 preferably supported and transported away by the loading and unloading device 6 already described in its hub area 50.
  • the individual ring-shaped tools 3, 3 ′ and 3 ⁇ are arranged within the tool holder 30 with the interposition of spacer rings 30 ′ and secured in their position in the middle (as a clamping ring 38) differently designed tools are used in order to be able to carry out different machining operations on workpieces 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
EP90120070A 1989-10-31 1990-10-19 Profilwalzmaschine für die Erzeugung von in ihrem Umfangsbereich profilierten, hohlzylindrischen oder topfförmigen Werkstücken aus Blech Withdrawn EP0425924A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3936200 1989-10-31
DE19893936200 DE3936200C1 (enrdf_load_stackoverflow) 1989-10-31 1989-10-31

Publications (1)

Publication Number Publication Date
EP0425924A1 true EP0425924A1 (de) 1991-05-08

Family

ID=6392569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120070A Withdrawn EP0425924A1 (de) 1989-10-31 1990-10-19 Profilwalzmaschine für die Erzeugung von in ihrem Umfangsbereich profilierten, hohlzylindrischen oder topfförmigen Werkstücken aus Blech

Country Status (2)

Country Link
EP (1) EP0425924A1 (enrdf_load_stackoverflow)
DE (1) DE3936200C1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116618497A (zh) * 2023-07-25 2023-08-22 苏州瑞玛精密工业股份有限公司 一种筒形件内波纹旋转挤压设备

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104751C2 (de) * 1991-02-15 1995-04-13 Leifeld Gmbh & Co Werkzeugmasc Anordnung zur Herstellung rotationssymmetrischer Werkstücke
ES2109851B1 (es) * 1994-05-18 1998-10-16 Construcciones Radio Electro M Procedimiento y dispositivo para la fabricacion de poleas de garganta multiple.
DE29500403U1 (de) * 1995-01-12 1995-03-02 SEM Schneider Elementenbau GmbH & Co. KG, 41238 Mönchengladbach Vorrichtung zur Herstellung von Konturen in der Wandung eines Rohres
DE10013801A1 (de) * 2000-03-20 2001-10-18 Reinhardt Gmbh Maschbau Blechumformmaschine
CN105921568B (zh) * 2016-05-18 2018-01-12 泉州市一鸣交通电器有限公司 一种铅套自动辊压设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704135B2 (de) * 1976-02-11 1978-11-16 Deere & Co., Moline, Ill. (V.St.A.), Niederlassung Deere & Co. European Office, 6800 Mannheim Vorrichtung zur Herstellung von zylinderförmige Naben aufweisenden Riemenscheiben
DE3204668A1 (de) * 1981-10-28 1983-08-18 Vanco 44646 Massillon Ohio Dorakovski Verfahren und vorrichtung zur herstellung von riemenscheiben
WO1984002667A1 (en) * 1982-12-30 1984-07-19 Metal Box Plc Forming necks on hollow bodies
DE3334349A1 (de) * 1983-09-22 1985-04-11 Goshi Kaisha Kanemitsu Doko Yosetsusho, Akashi, Hyogo Verfahren zur herstellung von mehrfach-keilriemenscheiben
EP0245049A1 (en) * 1986-05-02 1987-11-11 Ball Corporation A machine and method for spin flow forming rims of cylindrical metal shells
DE3715917A1 (de) * 1987-05-13 1988-12-01 Niemsch Otto Lanico Maschbau Maschine zum beiderseitigen boerdeln und einziehen zylindrischer dosenruempfe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750476C (de) * 1940-07-17 1945-01-15 Boerdel- und Siekenmaschine, insbesondere fuer Blechdosen
DE3711927C1 (en) * 1987-04-13 1988-10-13 Leifeld & Co Method for the production of metal hollow bodies with profiles running in the axial direction on their outer circumference, especially teeth, and an apparatus for carrying out the method
DE3741596C3 (de) * 1987-12-08 1995-05-18 Formatechnik Metall Und Kunsts Vorrichtung zum Herstellen eines Profils an einem rotationssymmetrischen Blechrohling

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704135B2 (de) * 1976-02-11 1978-11-16 Deere & Co., Moline, Ill. (V.St.A.), Niederlassung Deere & Co. European Office, 6800 Mannheim Vorrichtung zur Herstellung von zylinderförmige Naben aufweisenden Riemenscheiben
DE3204668A1 (de) * 1981-10-28 1983-08-18 Vanco 44646 Massillon Ohio Dorakovski Verfahren und vorrichtung zur herstellung von riemenscheiben
WO1984002667A1 (en) * 1982-12-30 1984-07-19 Metal Box Plc Forming necks on hollow bodies
DE3334349A1 (de) * 1983-09-22 1985-04-11 Goshi Kaisha Kanemitsu Doko Yosetsusho, Akashi, Hyogo Verfahren zur herstellung von mehrfach-keilriemenscheiben
EP0245049A1 (en) * 1986-05-02 1987-11-11 Ball Corporation A machine and method for spin flow forming rims of cylindrical metal shells
DE3715917A1 (de) * 1987-05-13 1988-12-01 Niemsch Otto Lanico Maschbau Maschine zum beiderseitigen boerdeln und einziehen zylindrischer dosenruempfe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUTTE, Des Ingenieurs Taschenbuch, 28. Auflage, Maschinenbau, Teil A, 1954 WILHELM & SOHN, Berlin 1. Abschnitt Walzbahnen und übersetzung * Seite 158, Zeile 7 * *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116618497A (zh) * 2023-07-25 2023-08-22 苏州瑞玛精密工业股份有限公司 一种筒形件内波纹旋转挤压设备
CN116618497B (zh) * 2023-07-25 2023-10-03 苏州瑞玛精密工业股份有限公司 一种筒形件内波纹旋转挤压设备

Also Published As

Publication number Publication date
DE3936200C1 (enrdf_load_stackoverflow) 1990-12-13

Similar Documents

Publication Publication Date Title
EP2691195B1 (de) Biegekopf zum biegen stab- und rohrförmiger werkstücke
DE19547005C2 (de) Drahtformvorrichtung
DE2658970C3 (de) Kurbelwellenfräsmaschine
CH657567A5 (de) Revolver-stanze.
DE2340535C3 (enrdf_load_stackoverflow)
EP0611612B1 (de) Drückwalzmschine
DE2624329A1 (de) Werkzeugmaschine
DE3824856A1 (de) Vorrichtung zur ring-formgebung
DE3936200C1 (enrdf_load_stackoverflow)
EP2218545B1 (de) Vorrichtung und Verfahren zur Fein- oder Feinstbearbeitung einer rotationssymmetrischen Werkstücksfläche
CH663923A5 (de) Abrichteinrichtung fuer bahngesteuertes abrichten von schleifscheibenprofilen.
DE3734734C2 (enrdf_load_stackoverflow)
EP2165785B1 (de) Vorrichtung und Verfahren zur Herstellung von Längsnuten in zylindrischen Werkstücken
DE2807268C3 (de) Maschine zum Zentrierschleifen von optischen Linsen
DE4341097C2 (de) Drückmaschine für die Herstellung von durch radiale Umformung erzeugbaren rotationssymmetrischen Metallblech-Werkstücken
EP0198860B1 (de) Verfahren und vorrichtung zur herstellung von rotationskörpern durch fliessumformung
DE68905072T2 (de) Zusatzvorrichtung zum präzisen Drehen eines Werkstücks.
DE3433044A1 (de) Abrichteinrichtung fuer bahngesteuertes abrichten von schleifscheibenprofilen
DE4106966C2 (de) Vorrichtung zum Herstellen von Zahnriemenscheiben
DE3741596C2 (enrdf_load_stackoverflow)
DE69032677T2 (de) Honwerkzeug und dieses honwerkzeug verwendendes hochgenaues feinstbearbeitungsverfahren
DE4437212A1 (de) Drückwalzmaschine
EP0291714B1 (de) Verfahren und Vorrichtung zur Herstellung von Rotationskörpern durch Fliessumformung
EP0461598A1 (de) Werkzeugmaschine
DE202022103820U1 (de) Umformmaschine zum Drücken und Drückwalzen

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): ES FR GB IT

17P Request for examination filed

Effective date: 19911009

17Q First examination report despatched

Effective date: 19920921

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: 19930119