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Abstract：
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For the cold upsetting of locking nuts used in vehicle, based on Archard wear theory, the mould wear and forming loads were simulated and analyzed by finite element analysis software DEFORM-3D. The result shows that the forming of parts fully meets the requirements of process. In order to get the better forming effect, the upper punch entrance angle, stamping speed, mould surface hardness and friction coefficient were chosen as factors, and the orthogonal test was designed to optimize the factors by reducing the mould wear and forming loads as the objective. Furthermore, the influence trend of each factor on the optimal objective was obtained by comprehensive consideration of production efficiency, energy consumption, equipment wear and other factors, and the optimal parameters with the upper punch entrance angle of 20°, the stamping speed of 5 mm·s-1, the die surface hardness of 61 HRC and the friction coefficient of 0.12 were obtained. Finally, the life of punch was greatly improved by the optimum parameters, which was verified by the test.
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Funds：
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企业横向项目（HY2018167）
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AuthorIntro：
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刘俊英（1978-），女，硕士，副教授，E-mail：489729140@qq.com
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Reference：
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