EP0812636A1 - Procédé et dispositif pour la fabrication de pièces à symétrie de révolution, en particulier de roues de véhicules - Google Patents

Procédé et dispositif pour la fabrication de pièces à symétrie de révolution, en particulier de roues de véhicules Download PDF

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Publication number
EP0812636A1
EP0812636A1 EP97109632A EP97109632A EP0812636A1 EP 0812636 A1 EP0812636 A1 EP 0812636A1 EP 97109632 A EP97109632 A EP 97109632A EP 97109632 A EP97109632 A EP 97109632A EP 0812636 A1 EP0812636 A1 EP 0812636A1
Authority
EP
European Patent Office
Prior art keywords
pressure rollers
blank
tool
roller
swivel
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Withdrawn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
EP97109632A
Other languages
German (de)
English (en)
Inventor
Dieter Prof. Dr.-Ing. Schmoeckel
Stefan Dipl.-Ing. Hauk
Paul Dipl.-Wirtsch.-Ing. Dick
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0812636A1 publication Critical patent/EP0812636A1/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a method for producing rotationally symmetrical metallic workpieces which have flanges extending to both sides on the peripheral edge of a circular disk-shaped central part, in particular one-piece vehicle wheels, the two flanges being formed from the round rim by means of a tool roll engaging the circumference of a rotating sheet metal blank and whereby pressure rollers arranged at a constant distance from the tool roll act on both sides of the blank edge.
  • cup-shaped workpieces on both sides are conventionally either produced in two parts, the two parts being connected to one another by a joining process, or they are produced by casting technology. These conventional manufacturing methods are associated with a relatively great effort.
  • a cutting roller is used as the tool roller, which performs a splitting function.
  • Support rollers only support the two split-off parts of the blank in order to hold them against the flanks of the tool roll.
  • a radial crack forms, the course of which cannot be controlled.
  • the object of the invention is therefore to design a method of the type mentioned at the outset so that it can be used to produce relatively large, thin-walled workpieces, in particular vehicle wheels, with sufficient accuracy and without error.
  • the tool roll is a forming roller and that compressive stresses are generated in the forming zone by the pressure rollers.
  • the stresses generated in the forming zone by the forming roller are superimposed by the axially acting pressure rollers, which on the one hand prevent any crack formation that precedes the forming rollers and on the other hand do not allow the sheet metal disc to deflect or buckle to the side or form wrinkles.
  • the interaction of the forming roller with the two pressure rollers creates a stress state in the forming zone which is comparable to the stress state during backward extrusion.
  • the workpiece is thus formed essentially exclusively by a flow process that takes place in the compressive stress range and therefore does not allow any free crack formation in the material. This means that even relatively thin sheet blanks with a relatively large size can be used Flanges can be made on both sides in the desired wall thickness.
  • the invention also relates to an advantageous device for carrying out the method.
  • the device has a rotatably drivable clamping device for the sheet metal blank and a radially adjustable tool carrier on which the forming roller is mounted, two pressure rollers acting on both sides of the blank edge being supported on the tool carrier, one of which is mounted on the tool carrier at least one can be swiveled sideways, according to the invention characterized in that the axes of rotation of the pressure rollers run at an angle to the axis of rotation of the clamping device for the sheet metal blank, and the tool roller is a forming roller with a rounded peripheral edge, to each of which a roller cone-shaped tapered roller section adjoins.
  • the tool unit consisting of the forming roller and the two pressure rollers is fed against the rotating sheet blank while maintaining the mutual assignment of these rollers and executes the forming process, the forming ratios remaining unchanged regardless of the respective radial infeed position.
  • the device shown has a clamping device 1 for a sheet metal blank 2.
  • the clamping device 1 is connected to a rotary drive (not shown) and is mounted in a machine frame 3.
  • a tool carrier 5 which can be advanced radially to the axis of rotation of the clamping device 1 by means of a feed drive 4 carries a forming roller 6 which is freely rotatably mounted therein and whose axis of rotation runs parallel to the axis of rotation of the clamping device 1.
  • the forming roller 6 is aligned with the circumference of the sheet metal blank 2.
  • each pressure roller 7 is mounted in a swivel bracket 8, which in turn is mounted on a support body 9, which is attached to the tool holder 5 and is radially adjustable relative to the axis of rotation of the sheet metal blank 2.
  • the axes of rotation of the pressure rollers 7 run at an angle of, for example, approximately 45 ° to the axis of rotation of the clamping device 1 for the sheet metal disc 2.
  • the swivel bracket 8 can be swiveled by means of a swivel drive 10, which is designed, for example, as a hydraulic cylinder.
  • the swivel bracket 8 acts with a Pivot stop 11 together, which limits the pivoting movement of the pivot support 8.
  • a swivel stop for the swivel bracket 8 can instead also be arranged on the inside. Due to the pivoting, the associated pressure roller 7 can be lifted so far from the workpiece made from the sheet metal blank 2 that the finished workpiece can be removed.
  • the forming roller 6 has a rounded peripheral edge 12, to which a roller section 13 which tapers in the shape of a truncated cone is connected on both sides.
  • the pressure rollers 7 pressing from both sides against the sheet metal disc 2 likewise have a rounded peripheral edge 14, which is adjoined on both sides by a roller section 15 which tapers in the shape of a truncated cone.
  • the rounded peripheral edge 14 of the pressure rollers 7 in each case forms a roller portion engaging the sheet metal blank 2 and a roller portion engaging the inside of the associated flange 2a produced.
  • the tool carrier 5 with the pressure rollers 7 and the shaping roller 6 mounted thereon are moved radially against the blank edge of the rotating sheet metal blank 2.
  • the rim edge is formed in one flow process, the two side flanges 2a being formed.
  • the pressure rollers 7 acting on the forming zone there superimpose additional compressive stresses on the tensions generated by the forming roller 6, which lead to the flow process.
  • the constant distance between the forming roller 6 and the pressure rollers 7 during the forming process determines the wall thickness of the flanges 2a produced in the process.
  • the distance between the forming roller 6 and the pressure rollers 7 can be changed during the forming operation in order to change the wall thickness of the flanges 2a in certain areas.
  • asymmetrical flanges can also be produced in this way.
  • a change in this distance and thus the wall thickness of the flanges 2a is achieved in that the support body 9, which is mounted on the tool carrier 5 on a pivot pin 16, is pivoted by means of an adjusting screw 17.
  • a radial adjustment of the pivot pin 18 takes place, on which the pivot carrier 8 is mounted on the support body 9.
  • the quarter turn actuator 1o is actuated.
  • the swiveling movement of the swivel support 8 lifts the pressure roller 7 so far from the workpiece that it can be removed.
  • both pressure rollers 7 are mounted on pivot supports 8 in the manner described and shown in FIG. 2, so that both pressure rollers 7 can be pivoted away on both sides.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP97109632A 1996-06-14 1997-06-13 Procédé et dispositif pour la fabrication de pièces à symétrie de révolution, en particulier de roues de véhicules Withdrawn EP0812636A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996123866 DE19623866C2 (de) 1996-06-14 1996-06-14 Verfahren und Vorrichtung zum Herstellen von rotationssymmetrischen Werkstücken, insbesondere Fahrzeugrädern
DE19623866 1996-06-14

Publications (1)

Publication Number Publication Date
EP0812636A1 true EP0812636A1 (fr) 1997-12-17

Family

ID=7797001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109632A Withdrawn EP0812636A1 (fr) 1996-06-14 1997-06-13 Procédé et dispositif pour la fabrication de pièces à symétrie de révolution, en particulier de roues de véhicules

Country Status (2)

Country Link
EP (1) EP0812636A1 (fr)
DE (1) DE19623866C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008059632A1 (de) 2008-11-28 2010-06-02 Manroland Ag Verfahren zum Betreiben einer Bogendruckmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820103C2 (de) * 1998-05-06 2001-09-13 Fritz Feldmeier Umformmaschine mit rotierenden Umformwerkzeugen
DE10322752B4 (de) * 2003-05-19 2007-05-10 Prof. Dr.-Ing. Dipl.-Wirtsch.-Ing. Peter Groche Verfahren zum Herstellen von Werkstücken aus Blech

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2338161A (en) * 1942-03-28 1944-01-04 Carnegie Illinois Steel Corp Method of manufacturing sheave wheels
BE714551A (fr) * 1967-05-26 1968-09-30
DE1602594A1 (de) * 1967-02-09 1971-03-04 Rationalisierung Eisen Blech M Verfahren und Vorrichtung zum Aufspalten der Stirnseite von rotationssymmetrischen Werkstuecken
US4291559A (en) * 1979-07-30 1981-09-29 Martin Charles F Sheave making apparatus and method
EP0083518A1 (fr) * 1981-12-29 1983-07-13 Allevard Industries S.A. Machine permettant le refendage profond dans la périphérie de disques non plans destinés à l'obtention de roues à bandage pneumatique
EP0143032B1 (fr) * 1983-10-21 1988-04-20 Aubecq Auxi S.A. Procédé de fabrication d'une poulie à gorges multiples en v et poulie ainsi réalisée
DE19602298A1 (de) * 1996-01-23 1996-08-14 Leifeld Gmbh & Co Verfahren zur Herstellung eines rotationssymmetrischen Teiles

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040620A1 (de) * 1980-04-11 1981-10-29 Wf Maschinenbau Und Blechformtechnik Gmbh & Co Kg, 4401 Sendenhorst Spaltvorrichtung fuer ronden
FR2518910A1 (fr) * 1981-12-29 1983-07-01 Letang & Remy Ets Machine permettant le refendage profond dans la peripherie de disques non plans destines a l'obtention de roues a bandage pneumatique
DE3239675C2 (de) * 1982-10-27 1985-10-03 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Verfahren zum Herstellen eines Fahrzeugrades
EP0109654A1 (fr) * 1982-11-17 1984-05-30 Ardal og Sunndal Verk a.s. Procédé et dispositif pour fendre un cercle métallique avec une roue asymétrique de fission
DE3539835C1 (de) * 1985-11-09 1986-09-11 WF Maschinenbau und Blechformtechnik GmbH & Co KG, 4415 Sendenhorst Vorrichtung zur Herstellung von Werkstücken, wie Poly-V-Scheiben, Felgen od. dgl.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2338161A (en) * 1942-03-28 1944-01-04 Carnegie Illinois Steel Corp Method of manufacturing sheave wheels
DE1602594A1 (de) * 1967-02-09 1971-03-04 Rationalisierung Eisen Blech M Verfahren und Vorrichtung zum Aufspalten der Stirnseite von rotationssymmetrischen Werkstuecken
BE714551A (fr) * 1967-05-26 1968-09-30
US4291559A (en) * 1979-07-30 1981-09-29 Martin Charles F Sheave making apparatus and method
EP0083518A1 (fr) * 1981-12-29 1983-07-13 Allevard Industries S.A. Machine permettant le refendage profond dans la périphérie de disques non plans destinés à l'obtention de roues à bandage pneumatique
EP0143032B1 (fr) * 1983-10-21 1988-04-20 Aubecq Auxi S.A. Procédé de fabrication d'une poulie à gorges multiples en v et poulie ainsi réalisée
DE19602298A1 (de) * 1996-01-23 1996-08-14 Leifeld Gmbh & Co Verfahren zur Herstellung eines rotationssymmetrischen Teiles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008059632A1 (de) 2008-11-28 2010-06-02 Manroland Ag Verfahren zum Betreiben einer Bogendruckmaschine

Also Published As

Publication number Publication date
DE19623866A1 (de) 1998-01-02
DE19623866C2 (de) 1999-09-09

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