EP 1275449 A1 20030115 - A method for producing a wheel rim for a vehicle
Title (en)
A method for producing a wheel rim for a vehicle
Title (de)
Verfahren zur Herstellung einer Felge eines Fahrzeugrades
Title (fr)
Procédé de fabrication d'une jante de roue de véhicule
Publication
Application
Priority
IT TO20010665 A 20010709
Abstract (en)
A tubular blank (10) of a constant thickness (s1) is arranged on an inner counter roller (21) with an outer diameter (D2) which is significantly smaller than the inner diameter (D1) of the tubular blank (10). A motor-driven roller (22) is pressed radially against the outside of the blank (10). The outer roller (22) is controlled to rotate, thereby causing the tubular blank (10) and the inner counter roller (21) also to rotate. A forming roller (20), operable to move in a controlled manner through an axial plane, is brought into contact with the outside of the blank (10) in order to obtain a tubular blank with a final axial length (L2) greater than the initial axial length (L1) and at least one portion (12) which is thinner (s2) and axially elongated. <IMAGE>
IPC 1-7
IPC 8 full level
B21D 53/30 (2006.01); B21H 1/10 (2006.01)
CPC (source: EP)
B21D 53/30 (2013.01); B21H 1/10 (2013.01)
Citation (search report)
- [AD] US 4962587 A 19901016 - ASHLEY JR WALTER L [US], et al
- [AD] WO 9625257 A1 19960822 - HESS ENG INC [US]
- [A] US 4909056 A 19900320 - RAGETTLI CHRISTIAN [CH]
- [A] DE 844587 C 19520721 - RUHRSTAHL AG
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 02015064 A 20020705; IT TO20010665 A 20010709