EP 2259883 A1 20101215 - METHOD FOR CONTROLLING THE FLOW OF MATERIAL WHEN DEEP-DRAWING A WORKPIECE, AND DEEP-DRAWING DEVICE
Title (en)
METHOD FOR CONTROLLING THE FLOW OF MATERIAL WHEN DEEP-DRAWING A WORKPIECE, AND DEEP-DRAWING DEVICE
Title (de)
VERFAHREN ZUR MATERIALFLUSSSTEUERUNG BEIM TIEFZIEHEN EINES WERKSTÜCKS UND TIEFZIEHVORRICHTUNG
Title (fr)
PROCÉDÉ DE COMMANDE DE FLUX DE MATIÈRE LORS DE L'EMBOUTISSAGE PROFOND D'UNE PIÈCE ET DISPOSITIF D'EMBOUTISSAGE PROFOND
Publication
Application
Priority
- EP 2009053835 W 20090331
- DE 102008017728 A 20080407
Abstract (en)
[origin: WO2009124860A1] The invention relates to a method for controlling the flow of material when deep-drawing a workpiece. The aim of the invention is to devise a method which better utilizes the drawing capacity of a workpiece and produces a more accurate shape, particularly at the bottom of the drawn part. Said aim is achieved by a method in which the deep-drawing process is performed incrementally and in which at least one bead is incorporated into the flange zone of the workpiece prior to each increment of the deep-drawing process, thus allowing the bottom to be more accurately shaped while preventing material from accumulating in the flange zone. The invention further relates to a deep-drawing device (2).
IPC 8 full level
B21D 22/22 (2006.01); B21D 24/04 (2006.01); B21D 25/00 (2006.01)
CPC (source: EP US)
B21D 22/22 (2013.01 - EP US); B21D 24/04 (2013.01 - EP US); B21D 25/00 (2013.01 - EP US)
Citation (search report)
See references of WO 2009124860A1
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 MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DE 102008017728 A1 20091008; DE 102008017728 A9 20100819; DE 102008017728 B4 20120516; EP 2259883 A1 20101215; EP 2259883 B1 20130731; US 2011094283 A1 20110428; US 9327332 B2 20160503; WO 2009124860 A1 20091015
DOCDB simple family (application)
DE 102008017728 A 20080407; EP 09730365 A 20090331; EP 2009053835 W 20090331; US 93672709 A 20090331