Tiefziehwerkzeug und Verfahren zum Tiefziehen eines Werkstückes

The invention relates to a deep drawing die (1) with a top die and a bottom die (2, 3), wherein the top die (2) has a holding down clamp (2a) and the bottom die (3) has a die plate (3a), and wherein at least one device (6), with which the distance between the holding down clamp (2a) and the die plate (3a) can be modified in portions or partially, is arranged in a flange region. The invention further relates to a method for deep drawing a workpiece (4) with a deep drawing die (1), wherein a workpiece (4) is inserted between a top die and a bottom die (2, 3) and deep drawn by closing the top and bottom dies (2, 3), and wherein at least one actuator (8) is controlled to generate a holding force during deep drawing. Essentially, the invention presented controls the flange feed of a workpiece (4) in the tool (1) by pressure distributions which are adjustable in the forming process. By selectively increasing forces in the flange feed at selected locations between holding down clamp (2a) and die plate (3a) it is possible to control the flow of material into the die plate (3a) during deep drawing. Using this control, it is possible to relieve the load on regions with high deforming work, so that tears or cracks at these points in the finished component can be prevented. This involves increasing the friction between die plate (3a) and plate (4) or between plate (4) and holding down clamp (2a) by generating holding forces, as a result of which the material is held fast and prevented from flowing at this location