EP0072296A2 - Method and apparatus for manufacturing vehicle-wheels called "style", and vehicle-wheels made by this method - Google Patents

Method and apparatus for manufacturing vehicle-wheels called "style", and vehicle-wheels made by this method Download PDF

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Publication number
EP0072296A2
EP0072296A2 EP82401413A EP82401413A EP0072296A2 EP 0072296 A2 EP0072296 A2 EP 0072296A2 EP 82401413 A EP82401413 A EP 82401413A EP 82401413 A EP82401413 A EP 82401413A EP 0072296 A2 EP0072296 A2 EP 0072296A2
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EP
European Patent Office
Prior art keywords
wheel
wheels
style
vehicle
rim
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Withdrawn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
EP82401413A
Other languages
German (de)
French (fr)
Other versions
EP0072296A3 (en
Inventor
R. Müller
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.)
ELERMETAL
Original Assignee
ELERMETAL
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 ELERMETAL filed Critical ELERMETAL
Publication of EP0072296A2 publication Critical patent/EP0072296A2/en
Publication of EP0072296A3 publication Critical patent/EP0072296A3/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/26Making other particular articles wheels or the like

Definitions

  • the present invention overcomes this drawback by creating a method of manufacturing so-called “style” wheels by creeping the metal in cavities of a mold adapted to the desired shape in order to obtain a wheel having the desired shape.
  • the invention also extends to the wheel obtained by this process.
  • the method is characterized by the fact that after having roughened the wheel by stamping with a press from a flat disc, the flange of the wheel is finished by creeping of the metal in the cavities. 'A suitable mold then the rim on which the tire is mounted is obtained by splitting, stamping, magnetoforming.
  • Fig. 1 is a plan view of the disc from which the so-called “style” wheel will be produced.
  • Fig. 2 is a side elevation, partly in section, of the wheel during manufacture.
  • Fig. 3 is a partial plan of the style wheel, obtained by the method of the invention.
  • the periphery of the wheel forms a crown 3 which is then, for example, cut into two parts 3a, 3b by splitting and, when these two half-discs forming between them a circular V are obtained, they are subjected to processes stamping and magnetoforming, for example, to finally obtain the rim on which the tire can be mounted.
  • stamping with the press then by creep, the actual rim 2 is obtained having extra thicknesses 10, 11, 12 as well as connecting zones 13, 14 giving a wheel called "style".
  • the use of the creep method makes it possible, by using a light alloy of good mechanical strength, to obtain a wheel of very low weight which can be, for example, one third of the weight of a wheel obtained by prior methods.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Abstract

The method for manufacturing is characterised in that, after forming the outline of the wheel by press-stamping a flat disc (1), the finishing of the rim (2) of the wheel is then carried out by plastic flow of the metal in the cavities of an appropriate mould and then the rim, on which the tyre is mounted, is obtained by slitting, deep-drawing and magneto-forming. <IMAGE>

Description

Actuellement, les véhicules automobiles sont de plus en plus équipés de roues dites "style" mais ces roues sont fabriquées principalement par moulage avec ensuite un usinage important ou alors par fonçage de billettes avec filage de la jante destinée à supporter le pneumatique.Currently, motor vehicles are increasingly equipped with so-called "style" wheels, but these wheels are manufactured mainly by molding with subsequent heavy machining or else by sinking of billets with spinning of the rim intended to support the tire.

Les deux procédés énoncés ci-dessus ne permettent pas d'obtenir des roues légères car, en ce qui concerne le procédé par moulage, les caractéristiques du métal nécessaires à l'emploi de ce procédé n'ont qu'un allongement inférieur à 5 % ce qui est extrêmement faible et nécessite par suite l'emploi d'une masse métallique importante. Pour l'autre procédé par filage, on se trouve devant le cas inverse : le métal, pour ce procédé, a un bon allongement mais une résistance limitée sinon très limitée et, de ce fait, l'épaisseur de la jante ne semble pas pouvoir dans l'état actuel des connaissances techniques, être inférieure à 5 mm,ce qui revient donc au même et, on est amené à utiliser une masse métallique importante.The two processes set out above do not make it possible to obtain light wheels because, as regards the molding process, the characteristics of the metal necessary for the use of this process have only an elongation of less than 5%. which is extremely low and therefore requires the use of a large metallic mass. For the other spinning process, we are faced with the opposite case: the metal, for this process, has a good elongation but a limited resistance if not very limited and, therefore, the thickness of the rim does not seem to be able in the current state of technical knowledge, be less than 5 mm, which therefore amounts to the same and, we are led to use a large metallic mass.

Or, du fait de la masse importante de la roue, le poids de l'ensemble, roue plus pneumatique, est considérable et, par conséquent, présente une inertie certaine provoquant évidemment une consommation d'énergie,ce qui est contraire aux recherches actuelles.However, due to the large mass of the wheel, the weight of the assembly, more pneumatic wheel, is considerable and, consequently, has a certain inertia obviously causing energy consumption, which is contrary to current research.

La présente invention remédie à cet inconvénient en créant un procédé de fabrication de roues dites "style" par fluage du métal dans des cavités d'un moule adapté à la forme désirée afin d'obtenir une roue présentant la forme recherchée.The present invention overcomes this drawback by creating a method of manufacturing so-called "style" wheels by creeping the metal in cavities of a mold adapted to the desired shape in order to obtain a wheel having the desired shape.

L'invention s'étend également à la roue obtenue par ce procédé.The invention also extends to the wheel obtained by this process.

Conformément à l'invention, le procédé se caractérise par le fait qu'après avoir ébauché la roue par estampage à la presse à partir d'un disque plat on procède à la finition du flasque de la roue par fluage du métal dans les cavités d'un moule approprié puis la jante sur laquelle est montée le pneumatique est obtenue par fendage, emboutissage, magnétoformage.According to the invention, the method is characterized by the fact that after having roughened the wheel by stamping with a press from a flat disc, the flange of the wheel is finished by creeping of the metal in the cavities. 'A suitable mold then the rim on which the tire is mounted is obtained by splitting, stamping, magnetoforming.

Diverses autres caractéristiques de l'invention ressortent d'ailleurs de la description détaillée qui suit.Various other characteristics of the invention will also emerge from the detailed description which follows.

Une forme de réalisation de l'objet de l'invention est représentée, à titre d'exemple, au dessin annexé.An embodiment of the object of the invention is shown, by way of example, in the accompanying drawing.

La fig. 1 est une vue en plan du disque à partir duquel sera fabriquée la roue dite "style".Fig. 1 is a plan view of the disc from which the so-called "style" wheel will be produced.

La fig. 2 est une élévation latérale, partie en coupe, de la roue en cours de fabrication.Fig. 2 is a side elevation, partly in section, of the wheel during manufacture.

La fig. 3 est un plan partiel de la roue à style, obtenue par le procédé de l'invention.Fig. 3 is a partial plan of the style wheel, obtained by the method of the invention.

A la fig. 1, il est montré un disque coupé 1 d'une épaisseur suffisante pour la réalisation d'une roue à style. On procède ensuite, à partir de ce disque découpé, à l'estampage du flasque 2 afin d'obtenir, à la presse, les reliefs formant les décors de style puis, par fluage du métal dans des cavités prévues à l'avance dans un moule, on obtient la forme décorative recherchée.In fig. 1, there is shown a cut disc 1 of sufficient thickness for the production of a style wheel. Then, from this cut-out disc, the flange 2 is stamped in order to obtain, with the press, the reliefs forming the style decorations and then, by creeping of the metal in cavities provided in advance in a mold, we obtain the desired decorative form.

Comme le montre la fig. 2, la périphérie de la roue forme une couronne 3 qui est ensuite, par exemple, découpée en deux parties 3a, 3b par fendage et, lorsque ces deux demi-disques formant entre eux un V circulaire sont obtenus, ils sont soumis à des procédés d'emboutissage et de magnétoformage, par exemple, pour obtenir finalement la jante sur laquelle peut être monté le pneumatique. Ainsi, d'abord par emboutissage à la presse puis par fluage, on obtient la jante proprement dite 2 présentant des surépaisseurs 10, 11, 12 ainsi que des zones de liaison 13, 14 donnant une roue dite "style". L'emploi du procédé par fluage permet en employant un alliage léger de bonne résistance mécanique d'obtenir une roue d'un poids très faible qui peut être par exemple d'un tiers du poids d'une roue obtenue par des procédés antérieurs.As shown in fig. 2, the periphery of the wheel forms a crown 3 which is then, for example, cut into two parts 3a, 3b by splitting and, when these two half-discs forming between them a circular V are obtained, they are subjected to processes stamping and magnetoforming, for example, to finally obtain the rim on which the tire can be mounted. So, first by stamping with the press then by creep, the actual rim 2 is obtained having extra thicknesses 10, 11, 12 as well as connecting zones 13, 14 giving a wheel called "style". The use of the creep method makes it possible, by using a light alloy of good mechanical strength, to obtain a wheel of very low weight which can be, for example, one third of the weight of a wheel obtained by prior methods.

L'invention n'est pas limitée à la forme de réalisation représentée et décrite en détail car diverses modifications peuvent y être apportées sans sortir de son cadre.The invention is not limited to the embodiment shown and described in detail since various modifications can be made without departing from its scope.

Claims (3)

1 - Procédé de fabrication de roues de véhicule dites "style" caractérisé en ce qu'après avoir ébauché la roue par estampage à la presse à partir d'un disque plat (1). on procède à la finition de la jante (2) de la roue par fluage du métal dans les cavités d'un moule approprié puis la jante sur laquelle est montée le pneumatique est obtenue par fendage, emboutissage, magnétoformage.1 - Method for manufacturing vehicle wheels called "style" characterized in that after having roughed the wheel by stamping with a press from a flat disc (1) . the rim (2) of the wheel is finished by creeping the metal into the cavities of an appropriate mold, then the rim on which the tire is mounted is obtained by splitting, stamping, magnetoforming. 2 - Outillage pour la mise en oeuvre du procédé suivant la revendication 1, caractérisé en ce qu'un moule présentant la forme nécessaire est employé pour le fluage du métal.2 - Tools for implementing the method according to claim 1, characterized in that a mold having the necessary shape is used for the creep of the metal. 3 - Roue obtenue par le procédé décrit dans la revendication 1 en liaison avec l'outillage décrit dans la revendication 2.3 - Wheel obtained by the method described in claim 1 in conjunction with the tool described in claim 2.
EP82401413A 1981-08-03 1982-07-29 Method and apparatus for manufacturing vehicle-wheels called "style", and vehicle-wheels made by this method Withdrawn EP0072296A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115039 1981-08-03
FR8115039A FR2510439A1 (en) 1981-08-03 1981-08-03 METHOD FOR MANUFACTURING WHEELS OF VEHICLES CALLED "STYLE", TOOLS FOR IMPLEMENTING THE METHOD AND WHEEL OBTAINED BY THIS PROCESS

Publications (2)

Publication Number Publication Date
EP0072296A2 true EP0072296A2 (en) 1983-02-16
EP0072296A3 EP0072296A3 (en) 1984-08-08

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EP82401413A Withdrawn EP0072296A3 (en) 1981-08-03 1982-07-29 Method and apparatus for manufacturing vehicle-wheels called "style", and vehicle-wheels made by this method

Country Status (3)

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EP (1) EP0072296A3 (en)
DE (1) DE72296T1 (en)
FR (1) FR2510439A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008034564A1 (en) * 2006-09-20 2008-03-27 Gm Global Technology Operations, Inc. Method for producing a wheel disc

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672021A (en) * 1969-02-20 1972-06-27 Fuchs Otto Method of making wheels
US3956451A (en) * 1971-10-14 1976-05-11 Motor Wheel Corporation Method of making an ornamental styled wheel
DE2615076A1 (en) * 1975-04-09 1976-10-21 Forgeal PROCESS FOR MANUFACTURING ONE-PIECE WHEELS BY DIE FORGING AND FLOW TURNING
DE2721577A1 (en) * 1977-05-13 1978-11-16 Suedrad Gmbh Deep drawing tool for making automobile wheels - has sharp edge on central boss of punch and die to avoid need for hub-cap
DE2745508A1 (en) * 1977-10-10 1979-04-12 Hans J Ing Grad Wissner Light alloy wheel for motorcycle - has split and profiled edge reinforced by weld at split bottom
GB2063722A (en) * 1979-11-30 1981-06-10 Letang & Remy Ets Method for manufacturing vehicle wheels and wheels obtained thereby
GB2074918A (en) * 1980-04-29 1981-11-11 Letang & Remy Ets Method for manufacturing vehicle-wheels by a magneto-forming process

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672021A (en) * 1969-02-20 1972-06-27 Fuchs Otto Method of making wheels
US3956451A (en) * 1971-10-14 1976-05-11 Motor Wheel Corporation Method of making an ornamental styled wheel
DE2615076A1 (en) * 1975-04-09 1976-10-21 Forgeal PROCESS FOR MANUFACTURING ONE-PIECE WHEELS BY DIE FORGING AND FLOW TURNING
DE2721577A1 (en) * 1977-05-13 1978-11-16 Suedrad Gmbh Deep drawing tool for making automobile wheels - has sharp edge on central boss of punch and die to avoid need for hub-cap
DE2745508A1 (en) * 1977-10-10 1979-04-12 Hans J Ing Grad Wissner Light alloy wheel for motorcycle - has split and profiled edge reinforced by weld at split bottom
GB2063722A (en) * 1979-11-30 1981-06-10 Letang & Remy Ets Method for manufacturing vehicle wheels and wheels obtained thereby
GB2074918A (en) * 1980-04-29 1981-11-11 Letang & Remy Ets Method for manufacturing vehicle-wheels by a magneto-forming process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008034564A1 (en) * 2006-09-20 2008-03-27 Gm Global Technology Operations, Inc. Method for producing a wheel disc

Also Published As

Publication number Publication date
DE72296T1 (en) 1983-11-24
EP0072296A3 (en) 1984-08-08
FR2510439A1 (en) 1983-02-04

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