EP 2142320 B1 20120208 - FORMING METHOD
Title (en)
FORMING METHOD
Title (de)
UMFORMVERFAHREN
Title (fr)
PROCÉDÉ DE FORMAGE
Publication
Application
Priority
- CH 2008000189 W 20080425
- CH 7502007 A 20070509
Abstract (en)
[origin: WO2008138152A1] A description is given of a method for producing an offset (7) in a metal sheet (2) in a forming process, wherein the sheet (2) is formed in at least one step between a female die (1) with a recess of a predetermined contour (4) and a male die (3) with a peripheral form given essentially by the same contour (4) in a way that guides the contours (4) essentially congruently one on the other. The method is first characterized in that the depth of penetration of the male die (3) into the sheet (2) in a first direction (R1) is set in said first forming process in such a way that a first height (H1), which corresponds essentially to the target height of the offset (7), is reached in the decisive peripheral zones of the offset (7), while the raised surface (8) of the remaining offset (7) reaches a greater height (H). The method is also characterized in that, in a further forming process, the offset (7) is reversed with a resetting die (5), which covers at least said contour (4), in a second direction (R2) counter to the first direction (R1) in such a way that essentially the entire raised surface (8) of the offset (7) is arranged at a second height (H2).
IPC 8 full level
B21D 22/04 (2006.01); B21D 28/10 (2006.01)
CPC (source: EP)
B21D 22/04 (2013.01); B21D 28/10 (2013.01)
Citation (examination)
- US 2003066329 A1 20030410 - AIZAKI JIRO [JP]
- US 5732587 A 19980331 - MAEDA AKIHIRO [JP], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008138152 A1 20081120; AT E544538 T1 20120215; EP 2142320 A1 20100113; EP 2142320 B1 20120208
DOCDB simple family (application)
CH 2008000189 W 20080425; AT 08733815 T 20080425; EP 08733815 A 20080425