Patent ID: 9314834
Filing Date: 2016-04-19
CPC Classification: B21D,B21J,B21K

Claim Text:
1. A device for shaping a metal sheet by die stamping, the device comprising: first and second trunnions configured to be fastened respectively to two opposite ends of a sheet, the sheet adapted to be shaped by die stamping, wherein the first trunnion defines a first bearing surface and the second trunnion defines a second bearing surface, the first and second bearing surfaces configured respectively to guide turning of the trunnions, and wherein the first bearing surface defining a peripheral groove around a pivot axis of the first trunnion while the second bearing surface is smooth along a pivot axis of the second trunnion, thereby allowing the second trunnion to move in translation along the pivot axis of the second trunnion and preventing the first trunnion from moving in translation along the pivot axis of the first trunnion.