EP 0353231 A4 19900108 - PROCESS AND APPARATUS FOR FORGING ONE PIECE TRACK ROLLER RIM.
Title (en)
PROCESS AND APPARATUS FOR FORGING ONE PIECE TRACK ROLLER RIM.
Title (de)
VERFAHREN UND VORRICHTUNG ZUM SCHMIEDEN EINER LAUFROLLENFELGE AUS EINEM STÜCK.
Title (fr)
PROCEDE ET APPAREIL DE FORGEAGE DE JANTES DE GALETS DE CHENILLES EN UNE SEULE PIECE.
Publication
Application
Priority
FR 8703438 A 19870313
Abstract (en)
[origin: WO8806931A1] A process for forging a one piece track roller rim (31) comprising the steps of placing a hot metal billet (27) on a supporting block (1); closing a die (4) having two complementary half-shells (4a, 4b) which, when engaging each other, define a forging cavity (14) the inner shape of which corresponds to the outer surface of the track roller rim (31) to be formed; moving a hoop (7) to surround and lock the two half-shells (4a, 4b) closed; moving a cylindrical punch (8) into the forging cavity (14) to form an axial opening (29) in the billet (27) and forging the billet material into the inner shape of the forging cavity (14); removing the cylindrical punch (8) from the forged track roller rim (31); removing the track roller rim (31) from the supporting block (1). A machine is also provided to carry out the process.
IPC 1-7
IPC 8 full level
B21D 31/00 (2006.01); B21J 5/02 (2006.01); B21J 13/02 (2006.01); B21K 1/28 (2006.01); B21K 23/04 (2006.01)
CPC (source: EP)
B21J 5/02 (2013.01); B21J 13/025 (2013.01); B21K 1/28 (2013.01); B21K 23/04 (2013.01)
Citation (search report)
- [X] GB 2171349 A 19860828 - THYSSEN INDUSTRIE
- [A] DE 2310983 A1 19740912 - RHEINSTAHL AG
- [X] PATENT ABSTRACTS OF JAPAN, vol. 7, no. 124 (M-218)[1269], 28th May 1983; & JP-A-58 41 643 (KAWASAKI YUKOU K.K.) 10-03-1983
- See references of WO 8806931A1
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
WO 8806931 A1 19880922; DE 3882137 D1 19930805; DE 3882137 T2 19940210; EP 0353231 A1 19900207; EP 0353231 A4 19900108; EP 0353231 B1 19930630; FR 2612095 A1 19880916; FR 2612095 B1 19940513
DOCDB simple family (application)
US 8800484 W 19880222; DE 3882137 T 19880222; EP 88902665 A 19880222; FR 8703438 A 19870313