EP 1720671 A1 20061115 - A METHOD OF FORMING A METAL SHEET BLANK
Title (en)
A METHOD OF FORMING A METAL SHEET BLANK
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES BLECHZUSCHNITTS
Title (fr)
PROCEDE DE FORMATION DE FLANC DE TOLE METALLIQUE
Publication
Application
Priority
- DK 2005000057 W 20050128
- DK PA200400119 A 20040128
Abstract (en)
[origin: WO2005072887A1] A method of forming a metal sheet blank (7) by deep-drawing the sheet blank (7) so as to produce a deep-drawn pre-form (7) having a base portion (8) and a skirt portion (9) extending at substantially right angles thereform. The height of the skirt portion (9) varies around the perimeter of the pre-form (7) so as to provide a skirt (9) having a curved edge course (10), and subsequently processing said curved edge (10) to obtain a curled or bent edge (10) having a curved course. The invention also relates to a tool (1,6) and an apparatus for forming a sheet blank and to a lid or container (7).
IPC 8 full level
B21D 24/16 (2006.01); B21D 19/12 (2006.01); B21D 51/38 (2006.01)
CPC (source: EP US)
B21D 19/12 (2013.01 - EP US); B21D 24/16 (2013.01 - EP US); B21D 51/38 (2013.01 - EP US)
Citation (search report)
See references of WO 2005072887A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL HR LV MK YU
DOCDB simple family (publication)
WO 2005072887 A1 20050811; CN 100446885 C 20081231; CN 1913986 A 20070214; EP 1720671 A1 20061115; US 2008229802 A1 20080925
DOCDB simple family (application)
DK 2005000057 W 20050128; CN 200580003330 A 20050128; EP 05700607 A 20050128; US 58650305 A 20050128