Method of pressing sheet metal benches involves pressing blank between front and rear clamping plates and mounted on die under punch

摘要

The method of pressing a sheet metal bench involves placing a sheet blank between a die (10) and punch (4) and locked by front and rear plates (AV, AR). The rear plate I enlarged towards the rear and has a curved surface adjacent to the punch to allow progressive deformation of the blank. Claims include press tools for carrying out the method