EP1335805B1 - Verfahren zur herstellung einer felge eines fahrzeugrades - Google Patents

Verfahren zur herstellung einer felge eines fahrzeugrades Download PDF

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Publication number
EP1335805B1
EP1335805B1 EP01980534A EP01980534A EP1335805B1 EP 1335805 B1 EP1335805 B1 EP 1335805B1 EP 01980534 A EP01980534 A EP 01980534A EP 01980534 A EP01980534 A EP 01980534A EP 1335805 B1 EP1335805 B1 EP 1335805B1
Authority
EP
European Patent Office
Prior art keywords
hoop
rim
thickness
ferrule
zone
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
EP01980534A
Other languages
English (en)
French (fr)
Other versions
EP1335805A1 (de
Inventor
Bruno Guimard
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.)
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
Original Assignee
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
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 Michelin Recherche et Technique SA Switzerland, Michelin Recherche et Technique SA France, Societe de Technologie Michelin SAS filed Critical Michelin Recherche et Technique SA Switzerland
Publication of EP1335805A1 publication Critical patent/EP1335805A1/de
Application granted granted Critical
Publication of EP1335805B1 publication Critical patent/EP1335805B1/de
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
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/30—Making other particular articles wheels or the like wheel rims
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49481—Wheel making
    • Y10T29/49492—Land wheel
    • Y10T29/49524—Rim making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49481—Wheel making
    • Y10T29/49492—Land wheel
    • Y10T29/49524—Rim making
    • Y10T29/49531—Roller forming

Definitions

  • the invention relates to a method for produce a wheel rim according to the preamble of claim 1.
  • US Patent 5,579,578 discloses a method of producing a wheel rim for vehicle with the steps of the preamble of claim 1.
  • the flow turning operations of the ferrule of a wheel rim are however likely to produce ferrules whose axial width may vary over their circumference.
  • the subject of the invention is an improved method of manufacturing a wheel rim which Significantly reduces the manufacturing dispersion of wheel rims. This process allows also to get reduced weight wheels.
  • the normal cutting operation at the axis of the shell of at least one lateral edge of the ferrule after the cylindrical fluotoumage operation has the advantage of eliminating all or part the extra thickness of the two ends of the rim finished, this reduces the final weight of the rim. It should be noted that the reduction in thickness during a flow forming operation cannot be applied to the two lateral edges of the ferrule. This thickness is therefore necessarily identical to the thickness of the starting metal blank. This operation also ensures that the edge of the ferrule is flat and that this plane is orthogonal to the axis of this same shell.
  • the cutting operation can be carried out on the inner side of the rim (i.e. side intended to be placed towards the interior of the vehicle). This has the advantage of reducing the thickness of the inner hook of the rim, which is less exposed than the hook outside to shocks.
  • the cutting operation can also relate to the two lateral edges of the shell.
  • the advantage is then to maximize the reduction in weight of the rim and obtain a excellent flatness of the lateral edges of the shell as well as a remarkable regularity of the axial width of the ferrule.
  • Figure 1 a partial section of a conventional steel sheet wheel.
  • This wheel 1 includes a rim 2 and a disc 3.
  • This figure illustrates the median plane of the wheel or plane P. This plane is placed at equal distance from the two hooks of the rim. The axially inner and outer positions are defined taking as reference the median plane P.
  • the rim has an outer hook 4, an outer seat 5, a safety boss or “hump” 6, a mounting groove 7, an interior seat 9 and an interior hook 10.
  • the disc 3 includes a hub seat 11, a transition zone 12 and an edge 13. The assembly is carried out by fitting under the mounting groove 7.
  • This figure also shows the axis of rotation A of the wheel.
  • FIG. 2 A method for producing the rims of the wheels according to the invention is illustrated in FIG. 2.
  • a sheet of metal sheet (not shown) of steel, aluminum or of alloys, is bent to give it a generally cylindrical shape of a ferrule 14 with two free edges.
  • the shell 14 is welded by a welding process by sparking, by resistance or other.
  • This ferrule 14 has a constant thickness ( Figure 3).
  • the ferrule 14 is then preferably calibrated in extension using a calibration tool shown schematically in Figure 4.
  • the expansion is obtained by moving a cam 15 which aside from the sectors 16 around which the ferrule 14 is installed.
  • FIG. 5 illustrates the step next which consists in obtaining by cylindrical flow turning the desired flat profile for the rims according to the invention.
  • the flow-forming process used is reverse flow-turning.
  • the ferrule 14 is mounted on a mandrel 17 and bears against a wall of the system 18 for locking the ferrule 14.
  • the mandrel 17 is then rotated and at least two knurls 19 roll on the radially outer surface of the ferrule 14 in the zones whose thickness must be reduced.
  • the rollers 19 are moved axially in the direction of the X axis by applying a radial force and tangential so that the material flow flows in the direction of Y. This creep of material is carried out in the opposite direction to the movement of the rollers 19.
  • FIG. 5 illustrates schematically the ferrule 20 of variable profile obtained.
  • FIG. 6 illustrates a first defect likely to be presented by the shell 20 after the flow-turning operations.
  • This defect corresponds to local variations in width axial of the ferrule 20. These variations are particularly observed on the attack side wheels.
  • the edge 24 is not perfectly cylindrical but has variations axial position. These variations are automatically reflected in the profile of the rim. It is thus possible to have variations in the profile of the edge of the hooks which can locally make it difficult to install or fix the balancing weights.
  • Figure 7 illustrates a second defect that can be observed: a defect in perpendicularity between the plane defined by the edge 24 of the ferrule 20 and that defined by the axis of the ferrule 20.
  • the angle ⁇ between these two planes can reach 1 to 2 degrees.
  • Figure 8 illustrates a third fault.
  • a partial profile of two ferrules 25 and 26 are substantially identical except for the length of the non-spinning areas on the side abutting the mandrel (on the left side of the figure).
  • These zones 27 for the shell 25 and 28 for the shell 26 differ from one length d. This difference is due to a variation in thickness of the starting blank between the two ferrules.
  • the ferrule 26 has a starting blank whose thickness is greater than that of the ferrule 25.
  • the profile of the two ferrules after flow turning is substantially identical because the relative displacement of the rollers is linked to the axial increase of the fluotoumées zones.
  • the effectively flow-turned area is axially smaller for a ferrule thicker.
  • a variation of thickness of 0.05 mm can cause a variation in axial width of the non-flow-turned area on the 5 mm stop side.
  • This problem is resolved by taking as a reference a characteristic point R of the profile of the shell after the flow-turning operations to define the position of the planes D 1 and D 2 for cutting the edges of the shell.
  • This point R is advantageously taken adjacent to an area of variable thickness and an area of fixed thickness as illustrated in FIG. 8.
  • a profile control system is used to determine the position of the cutting plane or of the two planes cutting as appropriate. It should be noted that it is not possible to take as a reference the edge of the ferrule on the attack side of the rollers because it is this edge which is the most sensitive to variations and undulations as has already been indicated.
  • Figure 9 (a) schematically illustrates the profile of one end of the shell 20 after the flow spinning operation.
  • This profile comprises a non-flow-formed outer zone 21 of axial width L minimum and of thickness e corresponding to the thickness of the starting blank, a transition zone 22 in which the thickness gradually decreases and a zone 23 of thickness e 1 scaled down.
  • Figure 9 (b) shows the profile of the outer edge of the resulting rim after rolling profiling operations.
  • the first zone 21 corresponds to the rim 31 of the rim hook 4, the zone of reduced thickness 23 at the seat 5 of the rim and at the start 29 of the hook and the transition zone 22 to the intermediate zone 30.
  • the hook 4 of the rim thus has three adjacent zones: the zone 29 of reduced thickness identical to that of the seat 5, the transition zone 30 whose thickness gradually increases and the zone 31 of thickness e identical to that of the blank of departure.
  • the hook 4 of FIG. 9 (b) thus has an excess thickness which may be necessary or not depending on the type of wheel concerned.
  • Figures 10 and 11 show two forms of hooks resulting from two different cutting operations.
  • the cutting plane D is located axially at a distance L from the junction point between the non-flow-turned zone 21 of thickness e and the transition zone 22 of variable thickness between e and e 1 .
  • the hook 4 has, after the cutting operation, a reduced area 32 of thickness e.
  • the rim thus has a reduced weight.
  • the cutting plane is located in zone 23, which has undergone a flow spinning to reduce its thickness from e to e 1 .
  • the hook resulting from the profiling operations therefore has an identical thickness over its entire length. The weight reduction is then maximum.
  • the edge of the shell can be cut by any suitable process, in particular turning or cutting with a wheel.
  • the rims are calibrated as follows obtained then we carry out the fitting with appropriate discs.
  • Figure 2 includes a step of machining the fitting area of the rim. This step is optional. The purpose of this step is to perfect the cylindrical geometry of the area fitting in the case of a sensitive assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Testing Of Balance (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Forging (AREA)
  • Tyre Moulding (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Heat Treatment Of Articles (AREA)

Claims (7)

  1. Verfahren zur Herstellung einer Radfelge aus einem Metallblech für ein Kraftfahrzeug, das die folgenden Schritte umfaßt:
    Zuschneiden eines Zuschnitts aus einem Metallblech unter Erhalt einer rechtwinkligen Geometrie,
    Biegen des Zuschnitts unter Erhalt eines zylindrischen Rundblechs (14),
    Verschweißen der beiden freien Ränder des Rundblechs (14) miteinander;
    Durchführen mindestens eines aus einem zylindrischen Drückwalzen bestehenden Arbeitsgangs, um ein bestimmtes Profil mit der Dicke des Rundblechs (20, 25, 26) zu erhalten, das Bereiche mit konstanter Dicke aufweist, die an Bereiche mit variierender Dicke grenzen;
    Profilieren des Rundblechs (20, 25, 26), um die Felge (2) zu erhalten, und
    Kalibrieren der Felge (2);
    dadurch gekennzeichnet, dass nach dem aus dem zylindrischen Drückwalzen bestehenden Verfahrensschritt und vor dem aus dem Profilieren des Rundblechs bestehenden Verfahrensschritt mindestens ein seitlicher Rand des Rundblechs (20, 25, 26) senkrecht zur Achse des Rundblechs (20, 25, 26) abgeschnitten wird, wobei die Schneidebene am Rand des Rundblechs (20, 25, 26) festgelegt wird, indem nach dem Arbeitsgang des Drückwalzens ein charakteristischer Punkt des Profils des Rundblechs (20, 25, 26) als Bezugspunkt genommen wird, wobei der charakteristische Punkt einem Übergangspunkt zwischen einem Bereich mit konstanter Dicke und einem Bereich mit variierender Dicke entspricht.
  2. Verfahren nach Anspruch 1, wobei die Felge (2) eine Innenseite und eine Außenseite aufweist, bei dem der seitliche Rand des Rundblechs (20, 25, 26) abgeschnitten wird, der der Innenseite der Felge (2) entspricht.
  3. Verfahren nach Anspruch 1, bei dem die beiden seitlichen Ränder des Rundblechs (20, 25, 26) abgeschnitten werden.
  4. Verfahren nach einem der Ansprüche 1 bis 3, bei dem ein Teil des nicht drückgewalzten Bereichs (21, 27, 28) am Rand des Rundblechs (20, 25, 26) abgeschnitten wird.
  5. Verfahren nach einem der Ansprüche 1 bis 3, bei dem mindestens ein Teil des drückgewalzten Bereichs am Rand des Rundblechs (20, 2 5, 26) abgeschnitten wird.
  6. Verfahren nach einem der Ansprüche 1 bis 5, bei dem das Rundblech (20, 25, 26) kalibriert wird, nachdem die beiden freien Ränder des Rundblechs (20, 25, 26) miteinander verschweißt worden sind.
  7. Verfahren nach einem der Ansprüche 1 bis 6, bei dem der Einpressbereich der Felge nachbearbeitet wird, nachdem die Felge (2) kalibriert worden ist.
EP01980534A 2000-11-13 2001-10-31 Verfahren zur herstellung einer felge eines fahrzeugrades Expired - Lifetime EP1335805B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0014675A FR2816532B1 (fr) 2000-11-13 2000-11-13 Procede de fabrication d'une jante de roue de vehicule
FR0014675 2000-11-13
PCT/EP2001/012601 WO2002038303A1 (fr) 2000-11-13 2001-10-31 Procede de fabrication d'une jante de roue de vehicule

Publications (2)

Publication Number Publication Date
EP1335805A1 EP1335805A1 (de) 2003-08-20
EP1335805B1 true EP1335805B1 (de) 2004-10-13

Family

ID=8856459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01980534A Expired - Lifetime EP1335805B1 (de) 2000-11-13 2001-10-31 Verfahren zur herstellung einer felge eines fahrzeugrades

Country Status (9)

Country Link
US (1) US6971173B2 (de)
EP (1) EP1335805B1 (de)
JP (1) JP4653932B2 (de)
AT (1) ATE279276T1 (de)
AU (1) AU2002212354A1 (de)
DE (1) DE60106477T2 (de)
ES (1) ES2230375T3 (de)
FR (1) FR2816532B1 (de)
WO (1) WO2002038303A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4076451B2 (ja) * 2003-01-28 2008-04-16 トピー工業株式会社 不等厚リム用リム素材、不等厚リム、不等厚リムの製造方法
ITBS20030023A1 (it) * 2003-03-04 2004-09-05 Tecnoforming S P A Metodo di realizzazione del canale per ruote in lega d'alluminio.
JP3933143B2 (ja) * 2004-04-28 2007-06-20 株式会社ワーク ホイールの製造方法。
KR20110053224A (ko) * 2008-11-18 2011-05-19 토피 고교 가부시키가이샤 통 형상 부재의 제조 방법
CN102762319B (zh) 2010-02-17 2015-07-15 都美工业株式会社 车辆用轮辋的制造方法
CN105215635A (zh) * 2015-10-16 2016-01-06 江苏新创雄铝制品有限公司 一种冷加工无缝铝合金轮毂的制备方法
DE102016117510A1 (de) * 2016-09-16 2018-03-22 Maxion Wheels Germany Holding Gmbh Verfahren zur Herstellung von Steilschulterfelgen, Steilschulterfelge und Fahrzeugrad hiermit für Nutzfahrzeuge
KR101949029B1 (ko) * 2017-08-08 2019-05-09 주식회사 포스코 자동차용 휠

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129496A (en) * 1959-12-08 1964-04-21 Darwin S Cox Method of producing improved vehicle wheels
DE2624872B2 (de) * 1976-06-03 1980-04-10 Bohner & Koehle Gmbh & Co, 7300 Esslingen Verfahren zum Herstellen von ungeteilten Felgen
US4185370A (en) * 1978-02-10 1980-01-29 Kelsey Hayes Co. Method of making a wheel rim
US4554810A (en) * 1984-04-02 1985-11-26 Motor Wheel Corporation Draw-spinning of integral vehicle wheel rim and disc segments
US5579578A (en) * 1993-10-27 1996-12-03 Hayes Wheels International, Inc. Method for producing a rim for a vechicle wheel
US5435633A (en) * 1994-01-03 1995-07-25 Hayes Wheels International, Inc. Aluminum full face vehicle wheel
WO1996025257A1 (en) * 1995-02-13 1996-08-22 Hess Engineering, Inc. Method of forming vehicle wheel rims
US5664329A (en) * 1995-11-30 1997-09-09 Cosma International Inc. Method for fabricating a one-piece metal vehicle wheel
JP3669751B2 (ja) * 1996-01-25 2005-07-13 トピー工業株式会社 片側フランジレスホイールリムの製造方法とその装置
US5832609A (en) * 1996-04-05 1998-11-10 Hayes Lemmerz International, Inc. Method for producing a variable thickness rim for a vehicle wheel
US6536111B1 (en) * 1996-07-24 2003-03-25 Hayes Lemmerz International, Inc. Process for spin forming a vehicle wheel
US6189357B1 (en) * 1996-10-29 2001-02-20 Hayes Lemmerz International, Inc. Apparatus and process for forming vehicle wheel rims
US6244668B1 (en) * 1998-10-30 2001-06-12 Specialty Blanks, Inc. Cold formed light alloy automotive wheel rim
DE19924062A1 (de) * 1999-05-26 1999-12-09 Leico Werkzeugmaschb Gmbh & Co Verfahren und Vorrichtung zum Drückwalzen

Also Published As

Publication number Publication date
FR2816532A1 (fr) 2002-05-17
FR2816532B1 (fr) 2003-01-24
DE60106477D1 (de) 2004-11-18
US20040016124A1 (en) 2004-01-29
JP2004512963A (ja) 2004-04-30
ATE279276T1 (de) 2004-10-15
EP1335805A1 (de) 2003-08-20
AU2002212354A1 (en) 2002-05-21
ES2230375T3 (es) 2005-05-01
JP4653932B2 (ja) 2011-03-16
WO2002038303A1 (fr) 2002-05-16
US6971173B2 (en) 2005-12-06
DE60106477T2 (de) 2006-02-02

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