EP1473097B1 - Method of forming disk wheels - Google Patents
Method of forming disk wheels Download PDFInfo
- Publication number
- EP1473097B1 EP1473097B1 EP04090165A EP04090165A EP1473097B1 EP 1473097 B1 EP1473097 B1 EP 1473097B1 EP 04090165 A EP04090165 A EP 04090165A EP 04090165 A EP04090165 A EP 04090165A EP 1473097 B1 EP1473097 B1 EP 1473097B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- bowl
- thickness
- conical
- reduction
- 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
Links
- 238000000034 method Methods 0.000 title claims description 21
- 238000003825 pressing Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000005097 cold rolling Methods 0.000 claims 1
- 238000001125 extrusion Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 14
- 238000005096 rolling process Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
-
- 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
- Y10T29/49496—Disc type wheel
- Y10T29/49504—Disc shaping
-
- 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
- bowls for motor vehicle wheels is usually made of boards, which in turn are punched out or burned out of strip material or wide flat steel.
- the material waste is very high and is about 35 to 40%.
- a cylindrical bandage is produced, from which a calotte is then produced by orbital pressing.
- the bowl bottom is preformed. Subsequently, in a conventional manner, the completion of the bowl.
- Another method is the rolling and welding of a full circular ring.
- the invention has for its object to simplify the manufacturing process.
- the rejuvenation or strain hardening of the material is already achieved in the strip, before the first forming, by rolling.
- Strip is tapered on one side by means of conical rollers, so that a curved part is formed.
- Significant difference from the prior art, however, is that no circular ring is produced, with a circumference of nearly 360 °, but a pitch circle ring whose circumference is between 130 ° -310 °, preferably at 180 °.
- this Tellnikring is formed by rounding into a closed ring, thereby creating a conical bandage immediately, which is then welded.
- bandage produced in this way can be formed by simple pressing operations, both the bottom of the bowl (hub flange) and the bowl pot.
- the prerequisite for the bottom of the bowl is that this area is already preformed, ie when rolling the strip between the conical rollers, a material thickness taper occurs on the outer side of the strip depending on the desired transformation between 20% and 50%.
- the circumference of the pitch ring is between 130 ° and 310 °.
- the further work sequence corresponds to the current production method
- the effect of the new process is a material saving of about 38% compared to the currently practiced process.
- the starting product is a strip of coil or Breüfiachstahl the specified dimension. This is conically rolled out by tapered rollers and at the same time deformed into a bow or partial circle ring.
- the pitch ring has a circumference of 180 °, but in any case significantly less than 360 ° ( Fig.2 ).
- the bottom of the bowl (hub flange) is pre-pressed under a press and the radius between the bottom of the bowl and the bowl of the bowl is carried out in accordance with the finished size ( Figure 5 ).
- the folding of the bowl bottom can be done under a press or on a flow-forming machine.
- the final pressing of the hub flange can be done directly in the conical bandage in a pressing operation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Metal Rolling (AREA)
Description
Die Herstellung von Schüsseln für Kraftfahrzeugräder wird in der Regel aus Platinen vorgenommen, die wiederum aus Bandmaterial oder Breitflachstahl ausgestanzt oder ausgebrannt werden. Bei dieser Herstellungsart ist der Materialabfall sehr hoch und liegt bei ca. 35 bis 40%.The production of bowls for motor vehicle wheels is usually made of boards, which in turn are punched out or burned out of strip material or wide flat steel. In this production, the material waste is very high and is about 35 to 40%.
Um diese sehr hohe Materialverschwendung zu reduzieren, ist von verschiedenen Räderherstellern versucht worden diese Teile aus zylindrischen Bandagen herzustellen. Umgesetzt worden ist dies bisher nur mit einem sehr aufwendigen 2 Stufen Orbital-Pressverfahren.In order to reduce this very high waste of material, various wheel manufacturers have tried to make these parts from cylindrical bandages. This has been implemented so far only with a very elaborate 2-stage orbital pressing process.
Hierbei wird zunächst eine zylindrische Bandage hergestellt, aus der dann durch orbitales Pressen eine Kalotte hergestellt wird. In einem zweiten orbitalen Pressschritt wird der Schüsselboden (Nabenflansch) vorgebildet. Anschließend erfolgt in herkömmlicher Weise die Fertigstellung der Schüssel.In this case, first a cylindrical bandage is produced, from which a calotte is then produced by orbital pressing. In a second orbital pressing step, the bowl bottom (hub flange) is preformed. Subsequently, in a conventional manner, the completion of the bowl.
Da dieses Verfahren vorwiegend auf Materialstauchen basiert, sind hierfür sehr hohe Kräfte erforderlich, so dass dies nur mit einem sehr hohen Investitionsaufwand realisiert werden kann.Since this method is based primarily on material diving, very high forces are required for this, so that this can only be realized with a very high capital outlay.
Ein anderes Verfahren ist das Auswalzen und Verschweißen eines vollen Kreisringes.Another method is the rolling and welding of a full circular ring.
Dieses Konzept ist aus den
Beim Verfahren nach der
Beim Verfahren nach der
Bei beiden Verfahren erfolgt die Materialumformung vorwiegend durch Walzen.In both processes, the material conversion takes place mainly by rolling.
Der Erfindung liegt die Aufgabe zugrunde das Herstellungsverfahren zu vereinfachen.The invention has for its object to simplify the manufacturing process.
Gelöst wird diese Aufgabe erfindungsgemäß durch ein Verfahren zum Herstellen einer Radschüssel mit den Merkmalen des Patentanspruchs 1.This object is achieved according to the invention by a method for producing a wheel disc having the features of
Bei der herkömmlichen Radschüsselherstellung wird die runde Platine in einer Fließdrückmaschine umgeformt. Hierbei wird der Schüsseltopf vom Boden (Nabenflansch) bis zum Rand konisch abgestreckt (verjüngt). Der Grund für das Abstrecken ist:
- Gewichtsreduzierung des Bauteils
- Verfestigung des Materials durch Kaltumformung
- Weight reduction of the component
- Solidification of the material by cold forming
Bei dem erfindungsgemäßen Verfahren wird die Verjüngung bzw. die Kaltverfestigung des Materials bereits im Streifen, vor der ersten Umformung, durch Walzen erreicht. Der Streifen wird mittels konischer Walzen einseitig gelängt, so dass ein bogenförmiges Teil entsteht. Wesentlicher Unterschied zum Stand der Technik ist aber, dass kein Kreisring hergestellt wird, mit einem Umfang von nahezu 360° ,sondern ein Teilkreisring, dessen Umfang zwischen 130°-310° liegt, vorzugsweise bei 180°.In the method according to the invention the rejuvenation or strain hardening of the material is already achieved in the strip, before the first forming, by rolling. Of the Strip is tapered on one side by means of conical rollers, so that a curved part is formed. Significant difference from the prior art, however, is that no circular ring is produced, with a circumference of nearly 360 °, but a pitch circle ring whose circumference is between 130 ° -310 °, preferably at 180 °.
Anschließend wird dieser Tellkreisring durch Runden zu einem geschlossenen Ring umgeformt, wobei dadurch gleich eine konische Bandage entsteht, die anschließend geschweißt wird.
Aus der auf diese Weise hergestellten Bandage lässt sich durch einfache Pressoperationen sowohl der Schüsselboden (Nabenflansch) als auch der Schüsseltopf umformen. Die Voraussetzung für die Schüsselbodenumformung ist, dass dieser Bereich bereits vorgeformt ist, d.h. beim Walzen des Streifens zwischen den konischen Walzen erfolgt eine Materialdickenverjüngung an der äußeren Seite des Streifens je nach gewünschter Umformung zwischen 20% und 50%. In Abhängigkeit davon liegt der Umfang des Teilkreisringes zwischen 130°und 310°.Subsequently, this Tellkreisring is formed by rounding into a closed ring, thereby creating a conical bandage immediately, which is then welded.
From the bandage produced in this way can be formed by simple pressing operations, both the bottom of the bowl (hub flange) and the bowl pot. The prerequisite for the bottom of the bowl is that this area is already preformed, ie when rolling the strip between the conical rollers, a material thickness taper occurs on the outer side of the strip depending on the desired transformation between 20% and 50%. Depending on this, the circumference of the pitch ring is between 130 ° and 310 °.
Die weitere Arbeitsfolge entspricht der gegenwärtigen FertigungsmethodeThe further work sequence corresponds to the current production method
Der Effekt des neuen Verfahrens ist, verglichen mit den derzeitig praktizierten Verfahren, eine Materialersparnis von ca. 38%.The effect of the new process is a material saving of about 38% compared to the currently practiced process.
Das erfindungsgemäße Verfahren soll nachfolgend an Hand der Zeichnungen an einem konkreten Beispiel erläutert werden, wobei die Herstellung für eine LWR Schüssel der Abmessung 22,5 x 9,00 beschrieben ist.The inventive method will be explained below with reference to the drawings in a concrete example, wherein the preparation for a LWR bowl the dimension 22.5 x 9.00 is described.
Wie sich aus der
Durch das konische Auswalzen des Materials entsteht auf der äußeren Faser des Streifens (R=540) eine größere Länge als an der inneren Faser (r340), wodurch das Biegen des Streifens zu einem Bogen erleichtert wird. Vorzugsweise hat der Teilkreisring einen Umfang von 180°, auf jeden Fall aber deutlich weniger als 360° (
Durch Runden des Teilkreisringes zu einem geschlossenen Ring entsteht eine konische Bandage (
Die Biegerollen an der Rundemaschine müssen wegen der unterschiedlichen Umlaufgeschwindigkeiten an der inneren und äußeren Faser des bogenförmigen Streifens konisch ausgelegt sein und unter einem bestimmten Winkel zueinender stehen.By rounding the partial circular ring into a closed ring, a conical bandage is created (
The bending rollers on the rotary machine must because of the different Circulation speeds on the inner and outer fibers of the arcuate strip be conical and zueinender stand at a certain angle.
Das Schweißen (Abbrennstumpf-, Gleichstrompress- oder andere Schweißverfahren) sowie das Entgraten und Nachrunden der Teile erfolgt ähnlich wie bei der Feigenherstellung (
In der konischen Bandage wird unter einer Presse der Schüsselboden (Nabenflansch) vorgepresst und der Radius zwischen dem Schüsselboden und dem Schüsseltopf dem Fertigmaß entsprechend ausgeführt (
Das Umlegen des Schüsselbodens kann unter einer Presse oder auf einer Fließdrückmaschine erfolgen.The folding of the bowl bottom can be done under a press or on a flow-forming machine.
Das Umlegen unter einer Presse ist ohne größere Probleme durchführbar, da durch das Fertigen der Teile aus einer konischen Bandage der Schüsselboden (Nabenflansch) bereits zu ca. 30% - 60% vorgeformt ist.The folding under a press is feasible without major problems, since by making the parts of a conical bandage of the bowl bottom (hub flange) is already preformed to about 30% - 60%.
Das Fertigpressen des Nabenflansches kann in der konischen Bandage auch in einer Pressoperation direkt erfolgen.The final pressing of the hub flange can be done directly in the conical bandage in a pressing operation.
Das Fertigstellen des Schüsselbodens (Nabenflansch) auf einer Fließdrückmaschine würde den zusätzlichen Effekt des Kaltverfestigens in diesem Bereich mit sich bringen welches zu einer Lebensdauerverbesserung des Rades führt.The completion of the bowl bottom (hub flange) on a flow-forming machine would entail the additional effect of strain hardening in this area, which leads to an improvement in the service life of the wheel.
Eine Reduzierung der Wandstärke des Einsatzmaterials wäre möglich und würde:
- a eine Gewichtserleichterung des Bauteils,
- b eine weitere Materialeinsparung
- a weight reduction of the component,
- b another material saving
Das Umformen des Schüsseltopfes kann:
- durch Fließdrücken (wie bisher) oder
- aufgrund der bereits konisch ausgewalzten Materials im diesen Bereich, durch eine einfache Pressoperation anstelle des aufwändigen Fließdrückverfahrens erfolgen.
- by flow molding (as before) or
- due to the already conically rolled material in this area, done by a simple pressing operation instead of the elaborate flow-molding process.
Die weiteren Arbeitsgänge für die Fertigstellung einer Radschüssel entsprechen den herkömmlichen Arbeitsgängen (
Claims (6)
- A method of producing a wheel disc in the following steps: a rectangular metallic strip - of pre-set uniform thickness - is rolled cold by conical rollers to form a partial circular ring, wherein the reduction of the thickness on the outer side of the curved strip amounts to at least 20 %, and the periphery of the partial circular ring is between 130° and 310°, preferably 180°, after that a conical binding with a main angle of between 20° and 70° relative to the axis of symmetry is produced by rounding, and the ends of the binding are welded together, after which the base (hub flange) of the wheel disc is then formed by shaping.
- A method according to Claim 1, characterized in that the curved strip has no reduction in thickness on its inside.
- A method according to one of the preceding Claims 1 to [sic] 2, characterized in that the reduction in thickness of the strip on the inside amounts to less than 20 %.
- A method according to any one of the preceding Claims 1 to 2, characterized in that a thickened portion, which amounts to up to 30 %, is formed on the inside of the strip by a crumpling deformation.
- A method according to any one of the preceding Claims, characterized in that the final shaping is carried out by extrusion or pressing.
- A method according to any one of the preceding Claims 1 to 4, characterized in that the cold rolling is carried out by means of two or more conical rollers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL04090165T PL1473097T3 (en) | 2003-04-30 | 2004-04-26 | Method of forming disk wheels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10320688A DE10320688B3 (en) | 2003-04-30 | 2003-04-30 | Method for producing wheeled dishes |
DE10320688 | 2003-04-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1473097A1 EP1473097A1 (en) | 2004-11-03 |
EP1473097B1 true EP1473097B1 (en) | 2008-06-25 |
Family
ID=32981290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04090165A Expired - Lifetime EP1473097B1 (en) | 2003-04-30 | 2004-04-26 | Method of forming disk wheels |
Country Status (8)
Country | Link |
---|---|
US (1) | US7251890B2 (en) |
EP (1) | EP1473097B1 (en) |
JP (1) | JP2004330303A (en) |
CN (1) | CN1541785A (en) |
BR (1) | BRPI0401662B1 (en) |
DE (2) | DE10320688B3 (en) |
ES (1) | ES2308107T3 (en) |
PL (1) | PL1473097T3 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014105400A1 (en) | 2014-04-15 | 2015-10-15 | Maxion Wheels Germany Holding Gmbh | Method for producing wheel disc molds on flow-forming machines, vehicle wheel with such a wheel disc mold and spinning chuck for flow-forming machines for producing corresponding wheel disc molds |
DE202014104068U1 (en) | 2014-08-29 | 2015-12-08 | Maxion Wheels Germany Holding Gmbh | Wheel disc for a disc wheel |
DE102021125383A1 (en) | 2021-09-30 | 2023-03-30 | Maxion Wheels Holding Gmbh | Wheel disc for a disc wheel and disc wheel |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5021945B2 (en) * | 2006-03-13 | 2012-09-12 | 三菱重工業株式会社 | pump |
KR100755260B1 (en) * | 2006-10-26 | 2007-09-05 | 김용우 | Manufacturing methed of expansion joint |
DE102008008114A1 (en) * | 2007-10-24 | 2009-04-30 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg | Wheel disk manufacturing method for vehicle, involves manufacturing disk from pipe by molding processing at pipe by pressure rollers, and cutting pipe into two axial pre-contour sections by separating section |
JP5478876B2 (en) * | 2008-12-15 | 2014-04-23 | トピー工業株式会社 | Manufacturing method of disc for wheel |
JP5517449B2 (en) * | 2008-12-24 | 2014-06-11 | トピー工業株式会社 | Manufacturing method of disc for wheel |
US9021706B2 (en) * | 2010-02-01 | 2015-05-05 | The Timken Company | Unified rolling and bending process for roller bearing cages |
CN104959518A (en) * | 2015-06-26 | 2015-10-07 | 山东南山铝业股份有限公司 | Method for preparing flange plate through die forging technology |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE493472C (en) * | 1930-03-06 | Rudolf Kronenberg Dr | Process for the production of disks, in particular wheel disks, with a central opening and optionally a cylindrical edge | |
US1399951A (en) * | 1919-11-10 | 1921-12-13 | George H Forsyth | Method of forming disk wheels |
GB745467A (en) * | 1953-08-27 | 1956-02-29 | Dunlop Rubber Co | Method of manufacturing wheel discs |
FR1102434A (en) * | 1954-06-16 | 1955-10-20 | Manufacturing process for wheel flanges | |
US3610862A (en) * | 1969-01-31 | 1971-10-05 | Continental Can Co | Method and apparatus for resistance welding utilizing application of high pressure |
US4660754A (en) * | 1985-07-15 | 1987-04-28 | Allied Tube & Conduit Corporation | Process of forming welded tubing |
US7124609B1 (en) * | 2002-09-04 | 2006-10-24 | Jeffrey Allen Hermanson | Spin forming of HVAC duct reducers |
-
2003
- 2003-04-30 DE DE10320688A patent/DE10320688B3/en not_active Expired - Lifetime
-
2004
- 2004-04-26 DE DE502004007419T patent/DE502004007419D1/en not_active Expired - Fee Related
- 2004-04-26 ES ES04090165T patent/ES2308107T3/en not_active Expired - Lifetime
- 2004-04-26 PL PL04090165T patent/PL1473097T3/en unknown
- 2004-04-26 EP EP04090165A patent/EP1473097B1/en not_active Expired - Lifetime
- 2004-04-27 BR BRPI0401662-9A patent/BRPI0401662B1/en active IP Right Grant
- 2004-04-27 US US10/832,869 patent/US7251890B2/en active Active
- 2004-04-28 JP JP2004132930A patent/JP2004330303A/en active Pending
- 2004-04-29 CN CNA2004100366391A patent/CN1541785A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014105400A1 (en) | 2014-04-15 | 2015-10-15 | Maxion Wheels Germany Holding Gmbh | Method for producing wheel disc molds on flow-forming machines, vehicle wheel with such a wheel disc mold and spinning chuck for flow-forming machines for producing corresponding wheel disc molds |
WO2015159231A1 (en) | 2014-04-15 | 2015-10-22 | Maxion Wheels Germany Holding Gmbh | Method for producing wheel disc forms on flow-forming machines, vehicle wheel having a wheel disc form of said type, and spinning mandrel for flow-forming machines for producing corresponding wheel disc forms |
DE202014104068U1 (en) | 2014-08-29 | 2015-12-08 | Maxion Wheels Germany Holding Gmbh | Wheel disc for a disc wheel |
DE102021125383A1 (en) | 2021-09-30 | 2023-03-30 | Maxion Wheels Holding Gmbh | Wheel disc for a disc wheel and disc wheel |
WO2023052975A1 (en) | 2021-09-30 | 2023-04-06 | Maxion Wheels Holding Gmbh | Wheel disc for a disc wheel and a disc wheel therewith |
Also Published As
Publication number | Publication date |
---|---|
BRPI0401662A (en) | 2005-01-18 |
BRPI0401662B1 (en) | 2014-06-24 |
US7251890B2 (en) | 2007-08-07 |
DE502004007419D1 (en) | 2008-08-07 |
DE10320688B3 (en) | 2005-01-20 |
PL1473097T3 (en) | 2009-01-30 |
US20040239172A1 (en) | 2004-12-02 |
EP1473097A1 (en) | 2004-11-03 |
CN1541785A (en) | 2004-11-03 |
JP2004330303A (en) | 2004-11-25 |
ES2308107T3 (en) | 2008-12-01 |
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