Paper deals with possibilities of draw beads or draw molding utilization in sheet-metal form- ing of intricate shape stamping. Draw beads appropriate location in process of deep drawing of sheet- metal brings many advantages and it removes a number of unpleasant effects. In paper the analysis of shape, size and suitable location of draw beads in areas where the fastest moving of material exists, is carried out. Suitable versions of draw beads and draw moldings including sizes and location in binder are described. Deep drawing process simulation of intricate shape stamping was carried out in simulation program Dynaform 5.7. Suitability of draw bead utilization is described on intricate shape stamping drawing from thin deep-drawing steel strip DC04 (11 305.21). The analysis was performed on a blank model created in the BSE (Blank Size Engineering) module for creation of optimal blank in simulation program Dynaform 5.7. For determination of areas suitable for location of draw beads the method using of maximum shear stress trajectories was used. Auxiliary calculations for input values of simulation model were performed in MS Excel programme.
展开▼
