EP 1320427 A1 20030625 - METHOD AND INSTALLATION FOR MAKING A WORKPIECE COMPRISING AT LEAST A TUBULAR SECTION
Title (en)
METHOD AND INSTALLATION FOR MAKING A WORKPIECE COMPRISING AT LEAST A TUBULAR SECTION
Title (de)
VERFAHREN UND ANLAGE ZUR HERSTELLUNG EINES WERKSTÜCKES MIT ZUMINDEST EINEM ROHRFÖRMIGEN QUERSCHNITT
Title (fr)
PROCEDE ET INSTALLATION DE FABRICATION D'UNE PIECE COMPORTANT AU MOINS UNE SECTION TUBULAIRE
Publication
Application
Priority
- FR 0102970 W 20010925
- FR 0012240 A 20000926
Abstract (en)
[origin: US6988390B2] A method of forming a tubular workpiece which consists in pre-bending a metal plate along at least two longitudinal lines of bend ( 12-13 ) then in bending the plate along at least one of the lines of bend ( 12-13 ) using a bending member ( 103-104 ) that exerts an external clamping force (F<SUB>7</SUB>, F<SUB>8</SUB>) along a part ( 23, 24 ) of the plate towards the at least one of the lines of bend ( 12, 13 ). Thereby preventing any sliding of part ( 23, 24 ) of the plate along the bending member ( 103-104 ) as the bending member bends the part. The bending member is articulated about a virtual geometrical axis (a, c) located inside a tubular section of the workpiece.
IPC 1-7
IPC 8 full level
B21D 5/04 (2006.01); B21D 53/00 (2006.01); H01J 9/14 (2006.01); H01J 29/07 (2006.01)
CPC (source: EP KR US)
B21D 5/04 (2013.01 - EP KR US); H01J 9/142 (2013.01 - EP US); H01J 29/073 (2013.01 - EP US); H01J 2229/0722 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0226412 A1 20020404; AT E268652 T1 20040615; AU 9199101 A 20020408; CN 1226110 C 20051109; CN 1466498 A 20040107; DE 60103769 D1 20040715; DE 60103769 T2 20050811; EP 1320427 A1 20030625; EP 1320427 B1 20040609; FR 2814386 A1 20020329; FR 2814386 B1 20030620; JP 2004509764 A 20040402; JP 3694715 B2 20050914; KR 100826259 B1 20080429; KR 20030065477 A 20030806; TW 571329 B 20040111; US 2003192356 A1 20031016; US 6988390 B2 20060124
DOCDB simple family (application)
FR 0102970 W 20010925; AT 01972204 T 20010925; AU 9199101 A 20010925; CN 01816313 A 20010925; DE 60103769 T 20010925; EP 01972204 A 20010925; FR 0012240 A 20000926; JP 2002530232 A 20010925; KR 20037003745 A 20030314; TW 90123560 A 20010925; US 38137103 A 20030325