EP 1660257 B1 20071107 - METHOD AND DEVICE FOR PRODUCING AT LEAST PARTIALLY PROFILED TUBES
Title (en)
METHOD AND DEVICE FOR PRODUCING AT LEAST PARTIALLY PROFILED TUBES
Title (de)
VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON MINDESTENS TEILWEISE PROFILIERTEN ROHREN
Title (fr)
PROCEDE ET DISPOSITIF POUR REALISER DES TUBES AU MOINS PARTIELLEMENT PROFILES
Publication
Application
Priority
CH 0300601 W 20030905
Abstract (en)
[origin: WO2005023454A1] The invention relates to a method for producing tubes that are at least partially profiled on their interior and preferably on their exterior from a hollow cylindrical blank (3), using a mechanical cold forming method. According to said method, the end of the blank (3) that is not to be machined (3') is fed to a clamping device (10). The blank (3) is then secured in the clamping device (10) and a mandrel (2) is subsequently inserted into the end of region (3') of the blank (3) that is to be machined. A lance (8) is guided in said mandrel so that it can be coaxially displaced in a longitudinal direction and the free end of said lance (8') can be introduced into the clamping device (10). The tip (8') of the lance (8) is then brought into a positive fit with the clamping device (10) in the axial direction of the blank (3) and the mandrel (2), together with the clamping device (10) and the blank (3) is guided axially through a fixed machining point (6). Radial exterior machining of the surface of the blank (3) along the section that is to be machined (3'') takes place at said machining point (6), to create the interior and exterior profiling of the blank (3). During said process, the mandrel (2) is preferably rotated about its axis in an intermittent manner. The invention also relates to a device for carrying out said method.
IPC 8 full level
CPC (source: EP KR US)
B21H 7/187 (2013.01 - EP KR US); B21J 5/12 (2013.01 - EP KR US); B21K 21/16 (2013.01 - KR)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005023454 A1 20050317; AT E377467 T1 20071115; AU 2003257352 A1 20050329; CA 2538511 A1 20050317; CA 2538511 C 20101221; CN 100457319 C 20090204; CN 1826192 A 20060830; DE 50308565 D1 20071220; EP 1660257 A1 20060531; EP 1660257 B1 20071107; ES 2295707 T3 20080416; JP 2007506552 A 20070322; JP 4369424 B2 20091118; KR 101026007 B1 20110330; KR 20060037459 A 20060503; US 2007271986 A1 20071129; US 7861572 B2 20110104
DOCDB simple family (application)
CH 0300601 W 20030905; AT 03818481 T 20030905; AU 2003257352 A 20030905; CA 2538511 A 20030905; CN 03827032 A 20030905; DE 50308565 T 20030905; EP 03818481 A 20030905; ES 03818481 T 20030905; JP 2005508660 A 20030905; KR 20067004398 A 20030905; US 57038903 A 20030905