THE INFLUENCE OF DIE GEOMETRY ON TOOL WEAR IN DEEP-DRAWING

This work shows by numerical simulation how the die edge geometry in a standard deep drawing process influences the maximum wear and the wea r distribution over the die edge. By experiments with physical simulat ion of deep drawing, the numerical model is verified. The model is the n used for optimization of the die edge with respect to tool wear. Dif ferent edge geometries are used: a standard circular edge, an elliptic al edge, a tractrix edge and an edge geometry designed especially to m ake the wear distribution more uniform. This investigation shows that the maximum wear on a die edge is influenced by the geometry. To achie ve a uniform wear distribution around the edge it is however necessary to use an optimized geometry. (C) 1997 Elsevier Science S.A.