US 11,833,565 B2
Device for forming a sheet-metal workpiece
Michael Wolf, Uhingen (DE); Ottmar Lehr, Rechberghausen (DE); Dieter Waidmann, Heuchlingen (DE); Peter König, Göppingen (DE); and Klaus Leinmüller, Iggingen-Brainkofen (DE)
Assigned to Allgaier Werke GmbH, Uhingen Baden-Württemberg (DE)
Filed by ALLGAIER WERKE GmbH, Uhingen (DE)
Filed on Mar. 29, 2016, as Appl. No. 15/084,215.
Application 15/084,215 is a continuation of application No. PCT/EP2014/070641, filed on Sep. 26, 2014.
Claims priority of application No. 10 2013 219 819.1 (DE), filed on Sep. 30, 2013.
Prior Publication US 2016/0207093 A1, Jul. 21, 2016
Int. Cl. B21D 24/02 (2006.01); B21D 24/08 (2006.01)
CPC B21D 24/08 (2013.01) [B21D 24/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A device for forming a sheet-metal blank, the device comprising:
a press frame including a pressing table, vertical columns, a cross head, and a ram;
a tool top part including an inner die and an outer die;
a tool base part including a punch and a sheet metal holder; and
at least one drive configured to move the inner die, the outer die, and the sheet metal holder in a vertical direction, wherein the at least one drive is configured to displace the inner die and the outer die at different speeds in a drawing direction, the at least one drive including:
a plurality of bolts arranged vertically slideable in the drawing direction; and
wherein one or more of the plurality of bolts directly contact at least one of the punch or the sheet metal holder and induce a force on the at least one of the punch or the sheet metal holder to translate the at least one of the punch or the sheet metal holder in the drawing direction;
wherein one or more of the plurality of bolts are positioned within and extend [at least partially] through the punch.