EP 1689542 A2 20060816 - DROP FORGING METHOD AND FORGING DEVICE FOR CARRYING OUT SAID METHOD
Title (en)
DROP FORGING METHOD AND FORGING DEVICE FOR CARRYING OUT SAID METHOD
Title (de)
VERFAHREN ZUM GESENKSCHMIEDEN UND SCHMIEDEVORRICHTUNG ZUR DURCHFÜHRUNG DES VERFAHRENS
Title (fr)
PROCEDE DE FORGE ET D'ESTAMPAGE, ET DISPOSITIF D'ESTAMPAGE POUR LA MISE EN OEUVRE DE CE PROCEDE
Publication
Application
Priority
- EP 2004053189 W 20041201
- DE 10356258 A 20031201
- DE 102004028378 A 20040611
Abstract (en)
[origin: WO2005053874A2] The invention relates a drop forging method by means of a forging device (1) provided with a hammer and a forging die (9), wherein a part (T) placed in the forging die (9) is shaped with a hammer blow, several engravings (a, b, c, d) are formed in the die (9), a blank (R) is initially inserted into the first engraving (a) and said blank is moved along the other engravings (b, c, d) to the last engraving (e), and then said blank picked up during shaping by a forging gripper. In order to obtain an optimum operating mode, the invention is characterised in that the part (T) is received in a plurality of engravings (a, b, c, d) with each hammer blow. In order to obtain a symmetrical distribution of the hammer load between occupied and non-occupied engravings, the parts (T) are gripped respectively during shaping by the forging grippers. After each hammer blow, a successive displacement of the parts (T) is carried out in the other engravings by removing the part (T) from the last engraving (e) or from the last but one by an engraving occupied by a part and a blank (R) is inserted in the first engraving (a) to be occupied.
IPC 8 full level
B21J 9/02 (2006.01); B21J 13/08 (2006.01)
CPC (source: EP US)
B21J 9/022 (2013.01 - EP US); B21J 13/08 (2013.01 - EP US)
Citation (search report)
See references of WO 2005053874A2
Citation (examination)
JP S5586637 A 19800630 - KOMATSU MFG CO LTD
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 MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005053874 A2 20050616; WO 2005053874 A3 20051013; EP 1689542 A2 20060816; RU 2006123440 A 20080110; RU 2374024 C2 20091127; US 2006266093 A1 20061130; US 8113029 B2 20120214
DOCDB simple family (application)
EP 2004053189 W 20041201; EP 04819698 A 20041201; RU 2006123440 A 20041201; US 44383906 A 20060531