Transactions of Materials and Heat Treatment

Title：Research on multistep unfolding algorithm of progressive die strip based on intermediate shapes

Authors： XU Heng-jian LIU Yu-qi JIN Wei ZHANG Zhi-bing

Unit： Huazhong University of Science and Technology

KeyWords： progressive die strip layout design intermediate shapes FE inverse approach seamless integration

ClassificationCode：TG386；TP391.9

year,vol(issue):pagenumber：2012,37(2):42-46

Abstract：

The main difficult of the progressive die strip layout design lies in the design of intermediate shapes. Considering the situation that the progressive die forming is dominated by bending deformation, a fast generating algorithm of intermediate shapes based on the rotation deformation was developed. In this algorithm, some conditions, such as the rotation axis, fixed area, deforming area, undeforming area, fixed restraint line, shape restraint line, constantlength line and rotation angle were considered. The intermediate shapes were solved by surface mesh. The generated intermediate shapes were considered as reference configuration, and the final configuration was unfolded to the intermediate shape to obtain the accurate trimming line. The realization flow of the intermediate shape generating algorithm was introduced. A seamless integration system SWCUX for multistep unfolding of progressive die strip was developed by SolidWorks API. The feasibility of the algorithm was verified with the intermediate shape design of a complex bending part.

Funds：

国家自然科学基金资助项目（50905067）；国家数控重大专项基金资助项目（2010ZX04014-072）

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