EP 1699580 A1 20060913 - METHOD AND DEVICE FOR THE PRODUCTION OF A HOLLOW CYLINDER FROM A BLANK
Title (en)
METHOD AND DEVICE FOR THE PRODUCTION OF A HOLLOW CYLINDER FROM A BLANK
Title (de)
VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN EINES ZYLINDRISCHEN HOHLK RPERS AUS EINEM ROHLING
Title (fr)
PROCEDE ET DISPOSITIF POUR PRODUIRE UN CORPS CREUX CYLINDRIQUE A PARTIR D'UNE EBAUCHE
Publication
Application
Priority
- AT 2004000458 W 20041228
- AT 20972003 A 20031230
Abstract (en)
[origin: WO2005063421A1] Disclosed is a method for producing a hollow cylinder from a blank, according to which the workpiece (2) is opened in the core region by means of successive forging deformations that are angularly staggered relative to each other about the axis of the workpiece (2) while the workpiece (2) is slid onto a piercing plug (20). In order to improve the perforation, the workpiece (2) is pressed against the piercing plug (20) at a given axial force, said piercing plug (2) being advanced towards the workpiece (2) counter to said axial force while being returned to the starting position thereof in synchrony with the axial advancement of the workpiece (2) between the successive forging deformations.
IPC 8 full level
CPC (source: EP US)
B21J 5/10 (2013.01 - EP US); B21J 9/04 (2013.01 - EP US); B21J 13/00 (2013.01 - EP US)
Citation (search report)
See references of WO 2005063421A1
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 2005063421 A1 20050714; AT 501152 A4 20060715; AT 501152 B1 20060715; AT 501152 B8 20070215; AT E464960 T1 20100515; DE 502004011081 D1 20100602; EP 1699580 A1 20060913; EP 1699580 B1 20100421; ES 2343839 T3 20100811; RU 2006127418 A 20080210; RU 2347641 C2 20090227; US 2007186604 A1 20070816; US 7434434 B2 20081014
DOCDB simple family (application)
AT 2004000458 W 20041228; AT 04802020 T 20041228; AT 20972003 A 20031230; DE 502004011081 T 20041228; EP 04802020 A 20041228; ES 04802020 T 20041228; RU 2006127418 A 20041228; US 58522404 A 20041228