EP0148066A2 - Verfahren und Vorrichtung zum Herstellen eines Fahrzeugrades mit verdünnter Felge aus einem Stahlwerkstück - Google Patents

Verfahren und Vorrichtung zum Herstellen eines Fahrzeugrades mit verdünnter Felge aus einem Stahlwerkstück Download PDF

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Publication number
EP0148066A2
EP0148066A2 EP84402562A EP84402562A EP0148066A2 EP 0148066 A2 EP0148066 A2 EP 0148066A2 EP 84402562 A EP84402562 A EP 84402562A EP 84402562 A EP84402562 A EP 84402562A EP 0148066 A2 EP0148066 A2 EP 0148066A2
Authority
EP
European Patent Office
Prior art keywords
blank
edge
rim
press
jaw
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.)
Granted
Application number
EP84402562A
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English (en)
French (fr)
Other versions
EP0148066A3 (en
EP0148066B1 (de
Inventor
Hubert Stienne
Pierre Cavel
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.)
Dunlop France SA
Original Assignee
Dunlop France SA
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 Dunlop France SA filed Critical Dunlop France SA
Publication of EP0148066A2 publication Critical patent/EP0148066A2/de
Publication of EP0148066A3 publication Critical patent/EP0148066A3/fr
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Publication of EP0148066B1 publication Critical patent/EP0148066B1/de
Expired legal-status Critical Current

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    • 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
    • B21D53/264—Making other particular articles wheels or the like wheels out of a single piece

Definitions

  • vehicle wheels There are several methods of manufacturing vehicle wheels depending on whether these are in a single part or in two assembled parts, and depending on the material used.
  • Another method consists in forming two complementary shells so as to obtain, by the union of these, a central veil and a complete rim.
  • the weight of material used for this type of wheel is important, which leads to a high cost price.
  • the present invention intends to propose a method of manufacturing steel wheels, in one piece, in order to remedy, on the one hand the drawbacks of wheels in two pieces as to their mechanical characteristics and their cost price and, on the other hand share those of light alloy wheels which are too expensive to meet the needs at the low end.
  • the method according to the invention also allows the manufacture of so-called "standard” wheels possessing, however, most of the qualities of high-end wheels (lightness and good mechanical strength) at a cost price compatible with that imposed by the market.
  • a substantially lateral sail vehicle wheel from a disc-shaped steel sheet, according to which a bowl-shaped blank with a high edge is produced. by a first deep drawing operation, then, the edge and the bottom of this cup are shaped to respectively form the rim and the wall of the wheel.
  • said deep drawing operation is carried out with reduction of the thickness of the edges relative to the thickness of the initial disc, and, by a second drawing operation, said blank to determine the final diameter of the wheel disc at the junction of the latter with the abovementioned edge and to place all of the material reserved for this disc outside of the plane of this diameter, then it is shaped into at least one pass the aforementioned edge of the bowl to give it the profile of the rim, and finally shaping the wheel disc in at least one operation, all of the above stamping and shaping operations being performed at press tools.
  • the thinning of the thickness of the edge of the above-mentioned bowl is obtained during stamping by controlling the holding force of the blank to be stamped.
  • a kind of rolling of this edge is carried out between the male and female parts of the stamping tool, during their relative displacement.
  • a second object of the invention lies in the tools for producing said deep bowl with thinning of its edge.
  • This tool comprises a punch and a matrix, driven in a relative translational movement relative to the punch and associated with a clamp, the clamping control of which is adjustable, while a control device is associated with the clamping command of the clamp.
  • blank as a function of the relative displacement of the matrix with respect to the punch and of the relative displacement of the blank with respect to the blank holder.
  • the third object of the invention is a tool for forming the rim from the thinned edge of the bowl, by means of a press, in accordance with the above process.
  • This tool comprises a fixed plate perpendicular to the axis of movement of the movable member of the press on which is mounted to slide radially a plurality of pairs of jaws whose active surfaces are parallel to the above axis, each jaw of each said pairs being associated with a cam surface cooperating with a complementary cam surface carried by the movable member of the press to bring the jaws closer when said member is moved in the direction of the plate against the effect of at least one elastic return member tending to separate the jaws from one another.
  • a preferred embodiment of this tool resides in that the inner jaw of each pair is secured to a slide mounted with radial sliding on the aforesaid plate and comprising at its outer part an axial heel whose inner face converges towards the axis above in the direction of the plate, in that the outer jaw is integral with a slide mounted with radial sliding on the slide of the inner jaw between the jaw and the heel of the latter, and comprises at its outer part an axial heel whose outer face converges towards the aforementioned axis in the direction opposite to the plate, while at least one elastic return member, coupled between the two slides tends to separate the jaws from one another and bring the heels together, and that the movable member of the press comprises a wedge-shaped cam capable of being introduced axially between the two aforementioned inclined faces to separate the heels from one another and to close the jaws.
  • FIG. 1 the final profile of a wheel comprising a web 1a and a rim 1b for receiving the tire has been sketched at 1.
  • This profile is of a known type in which the web 1a is offset from the median plane of the wheel so as to cons replace one side of the latter, located outside the vehicle when it is mounted therein, and release the interior volume of the wheel to leave space for the various members located in the vicinity of the rocket (ball joints and steering, braking devices ).
  • Reference 2 relates to a blank, from a steel disc which has been subjected to deep drawing, with thinning of the edges of the bowl formed.
  • the blank 2 comprises a bottom 2a whose thickness corresponds to that of the initial blank and a skirt 2b, slightly conical, the thickness of which is reduced.
  • FIGS. 1 to 4 the different thicknesses have been shown for reasons of clarity of the drawing without reference to the scale of representation of the wheel.
  • This blank requires the implementation of a specific tool shown schematically in Figure 1A.
  • This tool includes a punch 10 and a die 11a associated with a blank holder 11b.
  • the blank 12 to be stamped is therefore clamped between the die and the blank holder which comprises a member 13 for controlling and adjusting the clamping force indicated by the arrow 14.
  • stamping is obtained by moving the assembly 11a, 11b in the direction of arrow A relative to the fixed punch 10.
  • the invention in order to obtain a thinning of the side walls of the blank relative to the initial thickness e of the blank, therefore of the bottom, causes, at the same time as the deformation covering the punch, a drawing of the metal by adjusting the clamping force 14 of the blank holder.
  • a control system 15 which receives on the one hand the information from a sensor 16 for the radial displacement of the metal relative to the blank holder and on the other hand by the information from a sensor 17 for the axial displacement relative of the matrix with respect to the punch.
  • a radial displacement R of given metal corresponds to a certain "consumption" of metal in volume, and this volume divided by the stroke C of the matrix having caused this consumption, is significant of the thickness P1 of the metal constituting the edges of the draft.
  • the device 15 then suffices to compare the variation of these two parameters with their value fixed by this relationship and to act on the tightening force to obtain a regulation of this variation around that desired.
  • the desired thinning is then obtained.
  • FIG. 2 The operation which is then subjected to this blank, in accordance with the invention, is illustrated in FIG. 2. It is a drawing operation by which the part of the skirt 2b adjacent to the bottom 2a and the bottom 2a itself to determine the final diameter D of the web, both in size and in axial position. Thus, sufficient material has been reserved outside the plane of the diameter D to carry out the finishing of the web in subsequent operations.
  • FIGS. 3 and 4 show the operations for forming the profile of the rim 2 from the blank shaped according to FIG. 2. It can be seen that the material 2a reserved for the disc is located completely outside the interior volume of the rim which is thus released for the installation of internal tools cooperating with external tools for shaping the rim.
  • FIGS. 3A and 3B A preferred embodiment of a tool for implementing the method according to the invention by means of a press is shown in FIGS. 3A and 3B.
  • This tool shown in section in FIG. 3A, comprises a fixed plate 20 perpendicular to the axis 21 of the movement of the movable plate of the press which is shown at 22 the press being open, and at 22 'the press being closed.
  • Figure 3B which is a schematic view along A of FIG. 3A shows that this plate 20 supports a tool segmented into ten parts regularly distributed radially around the axis 21.
  • Each of these tool parts consists of a first internal jaw 23 equipped with a tool 24 shape whose active face is facing outwards.
  • This jaw 23 is in one piece with a support 25 (or slide) which is mounted in a radial groove 26 of the plate 20 in order to be able to slide in this groove.
  • the slide 25 is constantly returned towards the center of the plate by an elastic return member 27 coupled between the plate and its outermost end.
  • the slide 25 has a heel 28 extending axially in the direction of the movable press plate 22. This heel has an inclined surface 29 facing the jaw 23 and converging with the axis 21 in direction of stage 20.
  • a second jaw 30 is slidably mounted on the slide 25 between the jaw 23 and its tool 24, and the heel 28.
  • This external jaw comprises a tool 31 whose active surface faces the active surface of the tool 24 and is of complementary shape.
  • the jaw 30 in fact constitutes a slide and an axial heel, the outer surface 32 of which is inclined relative to the axis 21 and converges with the latter in the direction opposite to the plate 20.
  • the two surfaces 29 and 32 constitute a V whose branches can be moved aside or brought together parallel to themselves by introducing a wedge between them, as will be described below.
  • an elastic return member (spring) 33 disposed between the slides 25 and 30 whose effect tends to separate the tools 31 and 24 from one another.
  • the members which have just been described bear the index "'" in their closed press configuration. It is the same for the cam 34 with which the plate 22 is fitted, opposite each tooling part and which, in the form of a V or wedge, has two inclined surfaces 34a and 34b cooperating respectively with the surfaces 29 and 32 above to separate them from each other when the press is closed.
  • the press operation represented in FIG. 3A is that which makes it possible to pass from the blank in its form of FIG. 2 to that in the form of FIG. 3.
  • the press open With the press open, the blank 2 of the Figure 2 between the tools 24 and 31 by centering it on a fixed support 35 integral with the plate 30.
  • the closing of the press causes the penetration of the corners 34 between each of the surfaces 29, 32 and the bringing together of the tools 31, 24 which trap and deform the skirt 2b of the blank around a mean cylinder shown at 36 in FIG. 3B.
  • the distance of the plate 22 relative to the plate 20 frees the two slides which under the effect of the spring 33 move away from one another, the slide 25 being further brought closer to the center by the spring 27.
  • the opening (and closing) stroke will be such that it allows the axial extraction of the blank, taking into account the reliefs formed on its skirt. This extraction can be ensured by separate ejectors not shown or by the support 35 made movable relative to the plate 20.
  • FIG. 3B It can be seen in FIG. 3B that the tools are necessarily separated from each other in their working position by a radial space 37 making it possible to reach the open position (lower part of FIG. 3B) in which the internal ends of the slides 25 are joined. It follows from this constructive arrangement that the blank has facets corresponding to this space 37. It will then be necessary to carry out the forming operation between FIG. 2 and FIG. 3 by at least two passes, the blank being pivoted angularly around the axis 21 with a value equal to half the angle separating two consecutive tool parts (in the case of the figure, this value being equal to 18 ° of angle).
  • a transfer device (which may include means for extracting the blank instead of separate extractor) for transporting it in a other tools of the same type in order to complete (as in Figure 4) the shape of the rim.
  • the final formation of the web is then carried out in one or more passes between FIG. 4 and FIG. 5, by shaping between an external tool (die and an internal tool (punch) disposed in the wheel.
  • This or these operations are also carried out on a press which belongs to the transfer line taking charge of the entire manufacture of the wheel from the initial blank.
  • One of the advantages of the invention is that it makes it possible to manufacture an excellent quality steel wheel on a single production line, thus combining the advantages of mass production at low cost, to premium wheel features. It also makes it possible to differentiate the thicknesses of the web and of the rim and to adjust their ratio to a desired value which can be between 1 and 2 in particular by thinning the thickness of the rim.
  • the invention finds an interesting application in the field of mechanical construction and in particular accessories for the automotive industry.
EP19840402562 1983-12-30 1984-12-12 Verfahren und Vorrichtung zum Herstellen eines Fahrzeugrades mit verdünnter Felge aus einem Stahlwerkstück Expired EP0148066B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8321074 1983-12-30
FR8321074A FR2557479B1 (fr) 1983-12-30 1983-12-30 Procede et outillage de realisation d'une roue de vehicule a jante amincie en une seule piece d'acier

Publications (3)

Publication Number Publication Date
EP0148066A2 true EP0148066A2 (de) 1985-07-10
EP0148066A3 EP0148066A3 (en) 1985-08-07
EP0148066B1 EP0148066B1 (de) 1988-03-02

Family

ID=9295744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840402562 Expired EP0148066B1 (de) 1983-12-30 1984-12-12 Verfahren und Vorrichtung zum Herstellen eines Fahrzeugrades mit verdünnter Felge aus einem Stahlwerkstück

Country Status (3)

Country Link
EP (1) EP0148066B1 (de)
DE (1) DE3469495D1 (de)
FR (1) FR2557479B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414738B1 (de) * 1988-05-06 1992-09-23 O & K ORENSTEIN & KOPPEL AG Verfahren zur herstellung von schaufelradkörpern sowie danach hergestellter schaufelradkörper
WO1997019771A1 (en) * 1995-11-30 1997-06-05 Cosma International, Inc. Method for fabricating a one-piece metal vehicle wheel
WO2005065048A3 (en) * 2004-01-07 2006-08-03 Wheels India Wheels of unitary construction and method of making same
CN104540612A (zh) * 2012-08-07 2015-04-22 都美工业株式会社 车辆用车轮轮辋的制造方法
WO2018224027A1 (zh) 2017-06-08 2018-12-13 宁波德玛智能机械有限公司 轮毂整形模具的浮动块及其轮毂整形模具

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR757405A (fr) * 1932-09-08 1933-12-26 Procédé de fabrication de roues métalliques, poincons et matrices et roues métalliques
US2132002A (en) * 1934-04-11 1938-10-04 Budd Wheel Co Construction of hubs
GB664064A (en) * 1948-03-29 1952-01-02 Kelsey Hayes Wheel Co Method of forming a wheel
FR1377642A (fr) * 1962-11-07 1964-11-06 Dunlop Sa Perfectionnements à la fabrication de roues pour véhicules
GB1022139A (en) * 1964-04-13 1966-03-09 Darwin Steward Cox A method of manufacturing generally cupped and cylindrically shaped parts
FR2182150A1 (de) * 1972-04-27 1973-12-07 Grotnes Machine Works Inc
FR2475947A1 (fr) * 1980-02-20 1981-08-21 Antonov Evgeny Procede de production d'articles creux par emboutissage profond, presse pour la mise en oeuvre de ce procede et articles creux obtenus
FR2504459A1 (fr) * 1981-04-24 1982-10-29 Magyar Aluminium Roue en aluminium, en particulier roue de vehicule, et en outre procede et dispositif pour sa fabrication
GB2108914A (en) * 1981-11-06 1983-05-25 Daimler Benz Ag A disc wheel for pneumatic tyres

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR757405A (fr) * 1932-09-08 1933-12-26 Procédé de fabrication de roues métalliques, poincons et matrices et roues métalliques
US2132002A (en) * 1934-04-11 1938-10-04 Budd Wheel Co Construction of hubs
GB664064A (en) * 1948-03-29 1952-01-02 Kelsey Hayes Wheel Co Method of forming a wheel
FR1377642A (fr) * 1962-11-07 1964-11-06 Dunlop Sa Perfectionnements à la fabrication de roues pour véhicules
GB1022139A (en) * 1964-04-13 1966-03-09 Darwin Steward Cox A method of manufacturing generally cupped and cylindrically shaped parts
FR2182150A1 (de) * 1972-04-27 1973-12-07 Grotnes Machine Works Inc
FR2475947A1 (fr) * 1980-02-20 1981-08-21 Antonov Evgeny Procede de production d'articles creux par emboutissage profond, presse pour la mise en oeuvre de ce procede et articles creux obtenus
FR2504459A1 (fr) * 1981-04-24 1982-10-29 Magyar Aluminium Roue en aluminium, en particulier roue de vehicule, et en outre procede et dispositif pour sa fabrication
GB2108914A (en) * 1981-11-06 1983-05-25 Daimler Benz Ag A disc wheel for pneumatic tyres

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414738B1 (de) * 1988-05-06 1992-09-23 O & K ORENSTEIN & KOPPEL AG Verfahren zur herstellung von schaufelradkörpern sowie danach hergestellter schaufelradkörper
WO1997019771A1 (en) * 1995-11-30 1997-06-05 Cosma International, Inc. Method for fabricating a one-piece metal vehicle wheel
US5664329A (en) * 1995-11-30 1997-09-09 Cosma International Inc. Method for fabricating a one-piece metal vehicle wheel
WO2005065048A3 (en) * 2004-01-07 2006-08-03 Wheels India Wheels of unitary construction and method of making same
EP1708837A2 (de) * 2004-01-07 2006-10-11 Wheels India Limited Einteilig ausgeführte räder und herstellungsverfahren dafür
EP1708837A4 (de) * 2004-01-07 2007-05-16 Wheels India Einteilig ausgeführte räder und herstellungsverfahren dafür
CN104540612A (zh) * 2012-08-07 2015-04-22 都美工业株式会社 车辆用车轮轮辋的制造方法
CN104540612B (zh) * 2012-08-07 2016-06-01 都美工业株式会社 车辆用车轮轮辋的制造方法
WO2018224027A1 (zh) 2017-06-08 2018-12-13 宁波德玛智能机械有限公司 轮毂整形模具的浮动块及其轮毂整形模具

Also Published As

Publication number Publication date
FR2557479B1 (fr) 1987-05-07
EP0148066A3 (en) 1985-08-07
EP0148066B1 (de) 1988-03-02
FR2557479A1 (fr) 1985-07-05
DE3469495D1 (en) 1988-04-07

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