US20090126443A1 - Method and apparatus for manufacturing a rim bed by means of cold forming - Google Patents

Method and apparatus for manufacturing a rim bed by means of cold forming Download PDF

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Publication number
US20090126443A1
US20090126443A1 US11/659,486 US65948605A US2009126443A1 US 20090126443 A1 US20090126443 A1 US 20090126443A1 US 65948605 A US65948605 A US 65948605A US 2009126443 A1 US2009126443 A1 US 2009126443A1
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United States
Prior art keywords
bed
flow
spinning
longitudinal axis
flared
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.)
Abandoned
Application number
US11/659,486
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English (en)
Inventor
Khalid Tachi
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.)
Fontijne Grotnes BV
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Fontijne Grotnes BV
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Assigned to FONTIJNE GROTNES B.V. reassignment FONTIJNE GROTNES B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TACHI, KHALID
Publication of US20090126443A1 publication Critical patent/US20090126443A1/en
Abandoned 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers

Definitions

  • the invention relates to a method for manufacturing a substantially rotationally symmetric rim bed having a wall thickness varying along the longitudinal axis by means of cold forming.
  • Such a method is known from WO 2004/035243 and is used for manufacturing a so-called weight-optimized rim bed for a rim for a tire.
  • the thickness of the rim bed varies along the longitudinal axis. Then, at different locations along the longitudinal axis, the thickness of the rim bed can be chosen such that this is just sufficient for absorbing the local loads.
  • the rim bed may, for instance, be chosen so as to be relatively thick near the center of its axial length, in order to weld the rim bed there with the disk of the rim. In the adjacent areas, the thickness of the rim bed can then, for instance, be chosen so as to be considerably smaller, whereas the thickness closer to the sides of the rim is usually chosen so as to be larger.
  • the cylindrical steel bed is pre-pressed from the outsides inwards to the center by means of flow-spinning.
  • the more outer parts of the bed are brought to a nominal thickness and any excess material is brought to the center of the length of the longitudinal axis and the bed is pre-profiled.
  • the bed is stretched from the center axially outwards towards the sides at locations where the thickness of the rim bed needs to be reduced.
  • the invention contemplates a method of the type stated in the opening paragraph, with which, wile maintaining the advantages, these drawbacks can be prevented.
  • the invention provides a method for manufacturing a substantially rotationally symmetric rim bed having a wall thickness varying along the longitudinal axis by means of cold forming, wherein the side walls of a substantially cylindrical metal bed having a substantially constant wall thickness are flared radially outwards in a pressing operation, and wherein the wall thickness of the flared side walls is varied along the longitudinal axis by means of flow-spinning, with axial stretching and profiling of the sides.
  • the bed can be pre-profiled, or even finally profiled, in one flow-spinning step without dressing of the sides being necessary.
  • the material of the bed can move freely in feeding direction.
  • the flared side walls of the bed can be pressed from a free position onto a mandrel.
  • the material still to be deformed runs clear of the mandrel and does not run against a stop in feeding direction, which yields a favorable interplay of forces.
  • a removing operation can be omitted in forming the cylindrical bed into a brim bed.
  • the bed is pressed down on a mandrel near the center area of the length of the longitudinal axis.
  • the bed can be positioned well, so that, during further flow-spinning, a high size and form accuracy can be achieved.
  • the bed is axially stretched, radially thinned and profiled from the center area of the longitudinal axis in two opposite, outwardly directed movements with radial pressing down on a mandrel.
  • the flow-spinning is carried out in axially outwardly directed basic movements from the center area of the longitudinal axis of the bed towards the respective sides, while the still loose material to be profiled is pressed down on the mandrel.
  • the pre-profiled, flow-spun bed can also be rolled to a rim bed by means of roll forming.
  • radial expansion of the bed only takes place after flow-spinning or after the profiling step following flow-spinning.
  • the invention further relates to an apparatus for manufacturing a substantially rotationally symmetric rim bed having a wall thickness varying along the longitudinal axis by means of cold forming, wherein a substantially cylindrical metal bed having a substantially constant wall thickness is provided with sides flared radially outwards in a pressing operation, and wherein the wall thickness of the flared sides is varied along the longitudinal axis by means of flow-spinning, with axial stretching and profiling of the sides.
  • the apparatus is preferably provided with a flow-spinning station for profiling and axially stretching the flared bed with radial pressing down, and with a pressing station for radially outward flaring of the sides of a cylindrical bed, while the flow -spinning station connects downstream to the pressing station.
  • FIG. 1 shows a flow diagram of a production line for a rim bed according to the invention
  • FIG. 2A shows a schematic longitudinal cross-section of the flared cylindrical bed having a thickness substantially constant along the longitudinal axis
  • FIG. 2B shows a schematic longitudinal cross-section of a bed which is pre-profiled by means of flow-spinning on the basis of FIG. 2A , where it is clearly visible that the thickness of the bed varies along the longitudinal axis 1 ;
  • FIG. 3 shows a schematic longitudinal cross-section of a pressing station for radially outward flaring of the side walls of a cylindrical bed
  • FIGS. 4A and 4B show two schematic longitudinal cross-sections of a flow-spinning station during fixing and stretching/profiling the bed with flared sides, respectively;
  • FIG. 5A shows a schematic side elevational view of three successive roll formers
  • FIG. 5B shows a schematic longitudinal cross-section of a roll former in which a pre-profiled bed is profiled
  • FIG. 6 shows a schematic side elevational view of a radial expander.
  • FIG. 1 schematically shows a flow diagram for a production line P for a rim.
  • metal strips are cut to length in a first step 1 . 1 and formed into a cylindrical bed in a second group of steps 1 . 2 .
  • the strip is successively coiled ( 1 . 2 . 1 ) and its front ends are welded to each other ( 1 . 2 . 2 ), after which the weld is dressed ( 1 . 2 . 3 ).
  • the cylindrical rim bed having a constant wall thickness formed in part 1 is formed into a profiled rim bed in a profiling line ( 2 . 1 ) and then tested for leakage and provided with a valve hole ( 2 . 2 ).
  • the profiling takes place by means of cold forming of the material, i.e. the material is not melted and no removing takes place.
  • a first processing station 2 . 1 . 1 the side walls of the bed are flared radially outwards to the basic form shown in FIG. 3 in an axially inwardly directed pressing operation with the aid of mandrels.
  • the wall thickness of the flared bed is varied along the longitudinal axis by means of flow-spinning with simultaneous pre-profiling of the bed.
  • a third processing station 2 . 1 . 3 the pre-profiled bed is profiled to a rim bed by means of roll formers, after which the profiled bed is radially expanded to the desired size in a fourth processing station 2 . 1 . 4 .
  • the rim bed is ready to be assembled with the disk to a rim in an assembly part 3 of the production line.
  • the disk is connected with the rim bed at a predetermined location along the longitudinal axis.
  • FIG. 2A a longitudinal cross-section of the flared cylindrical bed 10 having a constant diameter along the longitudinal axis is shown.
  • FIG. 2B the pre-profiled bed 20 is shown, while it is clearly visible that the thickness t of the bed varies over the length of the longitudinal axis 1 .
  • FIG. 4A the flow-spinning station 2 . 1 . 2 is schematically shown.
  • the flow-spinning station is provided with two rotatably arranged mandrels 11 A, 11 B which are each axially slidable along the longitudinal axis 1 of the flared bed 10 .
  • the mandrels 11 are each placed from a side 12 A, 12 B of the flared bed 10 to the center area M of the length of the longitudinal axis 1 of the bed.
  • the bed is clamped at its sides 12 A, 12 B with the aid of slidable stop collars 14 .
  • the flow-spinning station further comprises one or more rollers 13 which can move radially with respect to the longitudinal axis of the bed 10 and which are further translatable with respect to the longitudinal axis of the bed 10 .
  • the rollers 13 are further rotatably arranged with respect to the flared bed 10 .
  • the rollers 13 and/or the flared bed 10 can rotate with respect to the fixed world during production.
  • FIG. 4A shows how, in a first processing step, the flared bed 10 is pressed down on the mandrels 11 A, 11 B near the center area M of the length l of the longitudinal axis of the bed 10 in a first flow-spinning step.
  • the thickness t of the center area M remains substantially equal.
  • the material of the bed 10 is moved outwards along longitudinal axis 1 in two successive, opposite movements with radial pressing down, so that, with axial stretching of the bed 10 , the thickness t of the bed 10 is locally reduced.
  • the material of the flared side of the bed 10 is pressed down from the free position on the mandrel 11 by the rollers 13 A, 13 B, so that the side wall of the bed 10 is pre-profiled to the pre-profiled bed 20 shown in FIG. 2B .
  • the thickness t only varies little over the longitudinal axis 1 . It will be clear that, in practice, the thickness variation may be greater or smaller than shown herein. Also, more or fewer areas having different thicknesses can be formed than shown herein.
  • the bed material flows outwards with respect to the center of the longitudinal axis towards the side.
  • the sides of the bed 12 A, 12 B can be supported by means of the slidable stop collars 14 .
  • FIG. 4B shows that the slidable stop collars do not support the sides 12 A, 12 B.
  • the stop collars 14 are again brought into contact with the sides 12 A, 12 B, after which the mandrels 11 A, 11 B are axially withdrawn. With axial withdrawal of the stop collars 14 , the pre-profiled bed 20 can then be removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)
US11/659,486 2004-08-06 2005-08-05 Method and apparatus for manufacturing a rim bed by means of cold forming Abandoned US20090126443A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1026796A NL1026796C2 (nl) 2004-08-06 2004-08-06 Werkwijze en inrichting voor het door middel van koude vervorming vervaardigen van een velgring.
NL1026796 2004-08-06
PCT/NL2005/000575 WO2006014110A1 (fr) 2004-08-06 2005-08-05 Procede et dispositif pour fabriquer un logement de jante par formage a froid

Publications (1)

Publication Number Publication Date
US20090126443A1 true US20090126443A1 (en) 2009-05-21

Family

ID=34974401

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/659,486 Abandoned US20090126443A1 (en) 2004-08-06 2005-08-05 Method and apparatus for manufacturing a rim bed by means of cold forming

Country Status (8)

Country Link
US (1) US20090126443A1 (fr)
EP (1) EP1778424A1 (fr)
JP (1) JP2008509005A (fr)
CN (2) CN101966547A (fr)
DE (1) DE202005021881U1 (fr)
NL (1) NL1026796C2 (fr)
RU (1) RU2392081C2 (fr)
WO (1) WO2006014110A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9452464B2 (en) 2011-07-06 2016-09-27 Federal-Mogul Corporation Method of forming a tubular member
US11633979B2 (en) 2016-09-16 2023-04-25 Maxion Wheels Germany Holding Gmbh Method for producing drop centre rims, drop centre rim and vehicle wheel therewith for commercial vehicles

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100509202C (zh) * 2007-11-26 2009-07-08 山东小鸭模具有限公司 一种悬臂梁式钢制轮辋的成型方法
NL2003657C2 (en) * 2009-10-16 2011-04-19 Fontijne Grotnes B V Device for forming a flared hoop, mandrel, method for forming a flared hoop, flared hoop.
NL2005086C2 (en) 2009-10-16 2012-11-05 Fontijne Grotnes B V Device for forming a flared hoop, mandrel, method for forming a flared hoop, flared hoop.
JP2011207352A (ja) * 2010-03-30 2011-10-20 Honda Motor Co Ltd 車両のホイール
RU2503518C1 (ru) * 2012-06-07 2014-01-10 Закрытое акционерное общество "Челябинский опытный завод" Способ изготовления деталей типа полых тел вращения с переменной жесткостью по сечению
EP2821158A1 (fr) * 2013-07-04 2015-01-07 Hayes Lemmerz Manresa, S.L.U. Procédé de fabrication de jantes de roue et équipement pour son exécution
WO2017122656A1 (fr) * 2016-01-14 2017-07-20 トピー工業株式会社 Dispositif et procédé de repoussage
DE202016009191U1 (de) 2016-09-16 2023-08-25 Maxion Wheels Holding Gmbh Steilschulterfelge und Fahrzeugrad hiermit für Nutzfahrzeuge
CN114029745B (zh) * 2021-10-22 2023-09-19 定南色耐特智能科技有限公司 适用于不同偏距轮辋的加工设备

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US9452464B2 (en) 2011-07-06 2016-09-27 Federal-Mogul Corporation Method of forming a tubular member
US11633979B2 (en) 2016-09-16 2023-04-25 Maxion Wheels Germany Holding Gmbh Method for producing drop centre rims, drop centre rim and vehicle wheel therewith for commercial vehicles

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DE202005021881U1 (de) 2011-02-10
NL1026796C2 (nl) 2006-02-07
RU2392081C2 (ru) 2010-06-20
EP1778424A1 (fr) 2007-05-02
RU2007108556A (ru) 2008-09-20
WO2006014110A1 (fr) 2006-02-09
CN101043958A (zh) 2007-09-26
JP2008509005A (ja) 2008-03-27
CN101966547A (zh) 2011-02-09

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