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ABSTRACT

Sheet stamping is the most important plastic working method and it's applied to automobile widely more and more. With the increasingly drastic market competition in automobile industry, it requires not only high production efficiency, but also optimized control on the production process. So the continuous improvement of sheet stamping technique and process has been there search hotspot of sheet forming all along. With the swift and violent development of computer hardware and software, finite element method and computer graphics, the computer aided engineering (CAE) technology based on numerical simulation is widely used in sheet forming field.
The part this paper desinged is the plate stiffener. The part is a typical stamping parts, how to shape products bending and bending of higher accuracy, its forming process property is difficulty and it is anisomerous. These features of the piece make the forming process and process supplyment complicated and the processing plan various.
In this paper, using three-dimensional mould software UGS NX 4.0 to build the shape, then according to the plasticity deformation principle and partial process knowledge, design guidelines and design experience, the forming process of the plate stiffener is researched. In addition, on the basis of analyzing the punch manufacturability of the piece, the possible processes in every working procedure are compared and analyzed, then the process plan are finally gained. Moulds of each process is designed in light of the optimized, and introducing the structure of the forming mould and the design of key pieces,and die assembly of its computer graphics.


Key words: Plate stiffener, Sheet stamping, Analysis for stamping technology,
Die design











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