EP 0381025 B1 19940511 - Method and apparatus for the cold deformation of ferrous and non-ferrous metal sections by spatial coil roll bending.
Title (en)
Method and apparatus for the cold deformation of ferrous and non-ferrous metal sections by spatial coil roll bending.
Title (de)
Verfahren und Vorrichtung zum Kaltumformen von Profilen aus Eisen- und Nichteisenmetallen durch räumliches Wickelrollbiegen.
Title (fr)
Méthode et dispositif pour déformation à froid de profilés de métaux ferreux et non ferreux par cintrage spatial à bobines.
Publication
Application
Priority
DE 3903298 A 19890203
Abstract (en)
[origin: EP0381025A1] A method and apparatus for the cold deformation of ferrous and non-ferrous metal sections performs spherical bending of the section (17) by means of a bending tool (52) which can be moved and rotated in all three spatial axes. For high-precision and low-stress bending of hollow sections, during which the cross-section of the hollow section must not be changed, it is provided that the section to be bent spherically is bent freely in space without a bending form and abutment, by the bending tool designed as a bending head (52), and that, to safeguard the position of the final bent section (17) leaving the bending head, a winding accessory (48) adjustable in all three spatial axes and, in addition, rotatable, is made to follow in exact alignment under the neutral axis of the bending head at a short distance (three-dimensional coil roll bending process). <IMAGE>
IPC 1-7
IPC 8 full level
B21D 7/12 (2006.01); B21D 11/06 (2006.01); B21D 53/02 (2006.01); B21F 1/00 (2006.01)
CPC (source: EP)
B21D 11/06 (2013.01); B21D 53/027 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0381025 A1 19900808; EP 0381025 B1 19940511; AT E105519 T1 19940515; DE 3903298 A1 19900809; DE 59005656 D1 19940616; JP H03124323 A 19910527
DOCDB simple family (application)
EP 90101359 A 19900124; AT 90101359 T 19900124; DE 3903298 A 19890203; DE 59005656 T 19900124; JP 2499090 A 19900203