METHOD FOR CONTROLLING THE FLOW OF MATERIAL WHEN DEEP-DRAWING A WORKPIECE, AND DEEP-DRAWING DEVICE

摘要

The present invention relates to a process for the material flow control in the case of deep drawing of a workpiece. The object of the present invention is to provide a method with which the fixation of a workpiece is better exploited and a better accuracy of shape, in particular of the bottom of the deep-drawn part can be achieved. The object is achieved by a method, in which the deep-drawing process is performed incrementally, and in which in front of each deep drawing process increment at least one bead in the region of the flange of the workpiece is worked. As a result, the dimensional accuracy of the bottom is improved and jamming of the material in the region of the flange can be avoided. Furthermore, the invention relates to a pressing device (2).