EP0089520A2 - Verfahren zum Herstellen von metallischen Felgen für Fahrzeugräder und danach hergestellte Produkte - Google Patents

Verfahren zum Herstellen von metallischen Felgen für Fahrzeugräder und danach hergestellte Produkte Download PDF

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Publication number
EP0089520A2
EP0089520A2 EP83102016A EP83102016A EP0089520A2 EP 0089520 A2 EP0089520 A2 EP 0089520A2 EP 83102016 A EP83102016 A EP 83102016A EP 83102016 A EP83102016 A EP 83102016A EP 0089520 A2 EP0089520 A2 EP 0089520A2
Authority
EP
European Patent Office
Prior art keywords
rims
pipe
vehicle wheels
wheels
alloy
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Withdrawn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
EP83102016A
Other languages
English (en)
French (fr)
Other versions
EP0089520A3 (de
Inventor
Piero Grimaldi
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.)
Alluminio Italia SpA
Original Assignee
Alluminio Italia SpA
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 Alluminio Italia SpA filed Critical Alluminio Italia SpA
Publication of EP0089520A2 publication Critical patent/EP0089520A2/de
Publication of EP0089520A3 publication Critical patent/EP0089520A3/de
Withdrawn legal-status Critical Current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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
    • 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

Definitions

  • This invention relates to a simplified process for manufacturing metal rims for vehicle wheels, in particular tire rims of aluminium alloy for wheels of motor vehicles, preferably weldless.
  • the aluminium alloy tire rims for motor vehicle wheels are presently manufactured starting from a flat plate which is caused to assume the tire rim shape by means of the following operations :
  • the resulting tire rim is ready for assembly by welding to the disc-wheel.
  • metal tire rims preferably weldless, for vehicle wheels, particularly weldless tire rims of aluminium alloy for motor vehicle wheels.
  • a hydroforming process which consists in imparting the desired shape to the wall of a metal pipe cut down size, preferably of the extruded type, by applicating to the inside of said pipe - previously inserted into a female die-matrix having inner walls profiled according to the shape to be imparted to the desired tire rim - a hydraulic pressure, by means of a press of conventional type, thus obtaining a rough profiled tire rim ready for the final finish (trimming by turning and the like).
  • Particularly suited materials to be employed for the manufacturing of tire rims according to the process of the present invention are the aluminium alloys of the Al-Mg type of the known Series AA 5000, the Al-Mg-Si alloys of the known Series AA 6000, and the Al-Zn-Mg or Al-Zn-Mg-Cu alloys of the known Series AA 7000.
  • the process forming the object of the present invention is particularly utilized for tire rims of wheels for motor vehicles; it is employable with technical-economical advantages also for manufacturing rims and tire rims for the most different types of vehicles, also in connection with the fact that the process itself can be practiced to obtain, instead of one rough rim only for each individual hydroforming operation, a plurality of rims (or tire rims), in this case starting from a pipe having a length proportioned to the desired number of rough rims to be obtained for every single forming operation, and utilizing, for said operation, a "multiple" die-matrix, i.e. having a plurality of "impressions", namely as are required to obtain the desired number of rims.
  • Cut-trimming operations to be carried out after the above-described multiple hydroforming, permit to obtain the finished rims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP83102016A 1982-03-18 1983-03-02 Verfahren zum Herstellen von metallischen Felgen für Fahrzeugräder und danach hergestellte Produkte Withdrawn EP0089520A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20244/82A IT1150477B (it) 1982-03-18 1982-03-18 Procentimento per la fabbricazione di cerchi metallici per ruote di veicoli e prodotti cosi'ottenuti
IT2024482 1982-03-18

Publications (2)

Publication Number Publication Date
EP0089520A2 true EP0089520A2 (de) 1983-09-28
EP0089520A3 EP0089520A3 (de) 1984-03-21

Family

ID=11165089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102016A Withdrawn EP0089520A3 (de) 1982-03-18 1983-03-02 Verfahren zum Herstellen von metallischen Felgen für Fahrzeugräder und danach hergestellte Produkte

Country Status (2)

Country Link
EP (1) EP0089520A3 (de)
IT (1) IT1150477B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142325A1 (de) * 1991-12-20 1993-06-24 Bayerische Motoren Werke Ag Verfahren zum herstellen von fahrwerkstraegern
DE19727599A1 (de) * 1997-06-28 1999-01-07 Volkswagen Ag Verfahren zur Herstellung von Metallrädern
CN110834176A (zh) * 2018-08-17 2020-02-25 浙江金固股份有限公司 轮辋的制造方法和车轮的制造方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2165985A1 (de) * 1970-03-21 1972-10-26 Dunlop Holdings Ltd., London Radfelge. Ausscheidung aus: 2113693
AU7082874A (en) * 1973-07-06 1976-01-08 Dunlop Ltd Die presses
DE2440725A1 (de) * 1974-08-24 1976-03-11 Berg Kg Vorrichtung zum kaltformen von hohlkoerpern
US4173136A (en) * 1977-11-17 1979-11-06 Schroth Wilhelm Heinrich Method and apparatus for producing multiple groove V-belt pulleys
DE2844803A1 (de) * 1978-10-11 1980-04-17 Mannesmann Ag Verfahren und vorrichtung zum herstellen von felgen oder radscheiben fuer fahrzeugraeder
DE3107887A1 (de) * 1981-03-02 1982-11-11 Stahlschmidt & Maiworm GmbH & Co KG, 5980 Werdohl Verfahren zur herstellung eines felgenringes aus leichtmetall

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142325A1 (de) * 1991-12-20 1993-06-24 Bayerische Motoren Werke Ag Verfahren zum herstellen von fahrwerkstraegern
EP0548859A1 (de) * 1991-12-20 1993-06-30 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen von Fahrwerksträgern
DE19727599A1 (de) * 1997-06-28 1999-01-07 Volkswagen Ag Verfahren zur Herstellung von Metallrädern
DE19727599B4 (de) * 1997-06-28 2007-08-02 Volkswagen Ag Verfahren zur Herstellung von Metallrädern
CN110834176A (zh) * 2018-08-17 2020-02-25 浙江金固股份有限公司 轮辋的制造方法和车轮的制造方法

Also Published As

Publication number Publication date
IT1150477B (it) 1986-12-10
IT8220244A0 (it) 1982-03-18
EP0089520A3 (de) 1984-03-21

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Inventor name: GRIMALDI, PIERO