EP 1844875 A4 20100505 - METHOD AND DEVICE FOR UPSETTING CYLINDRICAL MATERIAL
Title (en)
METHOD AND DEVICE FOR UPSETTING CYLINDRICAL MATERIAL
Title (de)
VERFAHREN UND VORRICHTUNG ZUR STAUCHUNG EINES ZYLINDRISCHEN ARTIKELS
Title (fr)
PROCÉDÉ ET DISPOSITIF DE REFOULEMENT D'UN MATÉRIAU CYLINDRIQUE
Publication
Application
Priority
- JP 2006301473 W 20060130
- JP 2005024164 A 20050131
- US 64955205 P 20050204
Abstract (en)
[origin: EP1844875A1] A method and a device for upsetting a cylindrical material capable of securely swelling the intended part of the cylindrical material to the inside or outside so that its wall thickness can be increased. A core (40) is disposed in the hollow parts (2a) and (3a) of the intended part (2) and the unintended part (3) of the cylindrical material (1). The unintended part (3) of the material (1) is disposed in the arresting hole (11) of an arresting die (10). The intended part (2) of the material (1) is disposed in a molding recessed part (12). The intended part (2) of the material (1) is disposed in the insertion hole (21) of a guide (20). Next, while the intended part (2) of the material (1) is pressurized in the axial direction with a punch (30), the guide (20) is moved in an opposite direction (25) to the moving direction (35) of the punch to swell the work predicted part (2) of the material (1) to the outside so that its wall thickness is increased in the molding recessed part (12).
IPC 8 full level
CPC (source: EP KR)
B21C 37/16 (2013.01 - EP); B21J 5/08 (2013.01 - EP KR); B21K 1/10 (2013.01 - EP KR); B21K 21/12 (2013.01 - EP)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 2006080503A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1844875 A1 20071017; EP 1844875 A4 20100505; EP 1844875 B1 20110420; EP 1844875 B9 20110907; KR 20070103409 A 20071023; WO 2006080503 A1 20060803
DOCDB simple family (application)
EP 06712616 A 20060130; JP 2006301473 W 20060130; KR 20077017567 A 20070730