Invention Grant
US09327332B2 Method for controlling the flow of material when deep-drawing a workpiece, and deep-drawing device 有权
深拉工件时控制材料流动的方法和深冲装置

Method for controlling the flow of material when deep-drawing a workpiece, and deep-drawing device
Abstract:
The aim of the invention is to provide a method for controlling the flow of material when deep-drawing a workpiece, which better utilizes the drawing capacity of a workpiece and produces a better shape accuracy, particularly of the bottom of the drawn part. The aim is achieved by a method in which the deep-drawing process is performed incrementally and in which at least one bead is incorporated into the flange region of the workpiece prior to each increment of the deep-drawing process. Due to this, the shape accuracy of the bottom can be improved and material accumulations in the flange zone can be prevented.
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