EP 1526931 A1 20050504 - METHOD FOR CONTROLLING THE MATERIAL FLOW DURING THE DEEP-DRAWING OF SHEET METAL, AND DEEP-DRAWING TOOL
Title (en)
METHOD FOR CONTROLLING THE MATERIAL FLOW DURING THE DEEP-DRAWING OF SHEET METAL, AND DEEP-DRAWING TOOL
Title (de)
VERFAHREN ZUR MATERIALFLUSSSTEUERUNG BEIM TIEFZIEHEN VON BLECHEN UND TIEFZIEHWERKZEUG
Title (fr)
PROCEDE DE GESTION DU FLUX DE MATIERES LORS D'UN PROCESSUS D'EMBOUTISSAGE DE TOLES ET OUTIL D'EMBOUTISSAGE
Publication
Application
Priority
- DE 10233008 A 20020720
- EP 0306305 W 20030614
Abstract (en)
[origin: US7086265B2] A method for controlling the material flow during the deep-drawing of sheet metal involves compressing the edges of the sheet metal ( 1 ) between at least one upper stopper ( 13 ) and at least one lower stopper ( 6, 7 ) during the deep-drawing process, with a controllable elastic force ( 8, 9 ). A corresponding deep-drawing tool is also provided. A Z-shaped blocking step ( 11 ) is stamped into the edge ( 1 a) of the sheet metal when the upper and lower stoppers ( 13, 6, 7 ) are closed, the basic shape is then produced by deep-drawing, maintaining the blocking step ( 11 ) and completely blocking the sheet metal between the stoppers. The sheet metal ( 1 ) is outwardly stretched, and the blocking step ( 11 ) is then reduced in terms of height, facilitating the outward displacement of the sheet metal towards the outside. The deep-drawing tool has a lower stopper including an inner stopper ( 6 ) and an outer stopper ( 7 ). The stoppers are arranged in an annular manner on the edge of the sheet metal ( 1 ) and can be displaced in relation to each other in the holding direction.
IPC 1-7
IPC 8 full level
B21D 22/22 (2006.01)
CPC (source: EP US)
B21D 22/22 (2013.01 - EP US)
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 2004009263 A1 20040129; AT E334762 T1 20060815; AU 2003246437 A1 20040209; DE 10233008 A1 20040212; DE 50304496 D1 20060914; EP 1526931 A1 20050504; EP 1526931 B1 20060802; ES 2268430 T3 20070316; US 2005217344 A1 20051006; US 7086265 B2 20060808
DOCDB simple family (application)
EP 0306305 W 20030614; AT 03764920 T 20030614; AU 2003246437 A 20030614; DE 10233008 A 20020720; DE 50304496 T 20030614; EP 03764920 A 20030614; ES 03764920 T 20030614; US 51280304 A 20041025