Method for reshaping metal sheet for housing structure of e.g. tailgate of passenger car, involves defining material stock and carrying out complete development in region of pre-tensioned workpiece before supplementary drawing step

摘要

The method involves deforming workpiece (1) to form deep edges (14) or flanges between forming punch and die (3). The workpiece is pulled and/or stretched and pre-tensioned by die insert (5) in a supplementary drawing step (6). A material stock is defined in the supplementary drawing step. Complete development in the region of pre-tensioned workpiece is carried out spatially, using the die before supplementary drawing step. An independent claim is included for device for reshaping workpiece.