Transactions of Materials and Heat Treatment

Title：Process analysis and optimization on single drawing for outer panel of automobile seat

Authors： Zhang Dongmin Liu Mingxin Sheng Yudong Wu Ziheng Zhu Shiwei Zhou Lunli

Unit： Shanghai Institute of Technology Shanghai Yanpu Metal Products Co. Ltd.

KeyWords： stamping forming sheet metal forming numerical simulation orthogonal experiment outer panel of automobile seat deep drawing

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2017,42(6):61-65

Abstract：

For the outer panel of automobile seat in a certain car, its deep drawing process was simulated by AutoForm software, and the cracking risk was predicted in the drawing process. Then, the cracking risk was eliminated and the maximum thinning rate was also reduced by adjusting the radius of parts and modifying the local structure. In order to obtain a better forming effect, the blank holder force, friction coefficient, stamping speed and clearance between punch and die were chosen as process parameters, and the orthogonal experiment was carried out to optimize the above process parameters. The simulation results show that the optimal deep drawing process parameters are blank holder force of 250 kN, stamping speed of 1000 mm·s-1,friction coefficient of 0.13 and the clearance between punch and die of 2.42 mm, with the max thinning rate of 24.33% and the max thickening rate of 6.54% obtained. Finally, the actual drawing test is conducted based on the simulation and orthogonal optimization. The forming property is in consistent with the finite element modeling results, and the part quality is completely satisfied with the design requirements.

Funds：

企业横向项目（J2015-272）

张东民（1968-），男，博士，教授刘铭心（1994-），男，硕士研究生

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