EP 1468756 A1 20041020 - Method and machine for bending tubular elements to a variable radius of curvature
Title (en)
Method and machine for bending tubular elements to a variable radius of curvature
Title (de)
Verfahren und Vorrichtung zum Biegen von rohrförmigen Werkstücken mit veränderlichem Biegeradius
Title (fr)
Procédé et dispositif pour cintrer des éléments tubulaires avec rayon de courbure variable
Publication
Application
Priority
IT VI20030076 A 20030415
Abstract (en)
A bending method for tubular elements in a bending machine (1) comprising a central vice (3) and two moving bending heads (4, 5) provided with bending means (11) and positioned on the sides of the vice (3). The method comprises the following operations: positioning a tubular element (T) inside the vice (3) and the bending heads (4, 5); holding a tubular element (T) in bending position inside the vice (3) and the bending heads (4, 5); rotating the bending means (11) of the bending heads (4, 5) to bend the tubular element (T), the rotation of the bending means (11) being combined with the travel of the bending heads (4, 5) with respect to the vice (3) to make bends with variable radius of curvature on the tubular element (T). <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
Citation (search report)
- [A] US 4604885 A 19860812 - LANG THOMAS P [DE]
- [A] DE 2546695 A1 19770324 - DAIICHI KOSHUHA KOGYO KK
- [A] PATENT ABSTRACTS OF JAPAN vol. 016, no. 388 (M - 1297) 18 August 1992 (1992-08-18)
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 PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1468756 A1 20041020; EP 1468756 B1 20060726; AT E333956 T1 20060815; DE 602004001620 D1 20060907; DE 602004001620 T2 20070719; IT VI20030076 A1 20041016
DOCDB simple family (application)
EP 04101562 A 20040415; AT 04101562 T 20040415; DE 602004001620 T 20040415; IT VI20030076 A 20030415