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基于Fastamp和正交试验的汽车门框冲压工艺参数优化
英文标题:Optimization on stamping process parameters of automobile door frame based on Fastamp and orthogonal test
作者:张翔 皇甫兆阳 孙庆东 王基 卓宇 
单位:扬州市职业大学 江苏易咖新能源汽车有限公司 
关键词:Fastamp 汽车门框 冲压成形 正交试验 拉延 
分类号:TG386
出版年,卷(期):页码:2021,46(1):70-75
摘要:

 针对某汽车门框冲压工艺复杂、容易出现破裂和起皱的特点,选择对成形质量影响最大的拉延工序进行分析,并基于国产Fastamp软件建立了汽车门框拉延仿真模型。然后,选取压边力、摩擦系数、冲压速度及模具间隙作为正交试验的主要影响因素,建立了4因素4水平的正交试验表。采用综合评分法和极差分析法,获得了最优的工艺参数组合:摩擦系数为0.105,压边力为2400 kN,冲压速度为3000 mm·s-1,模具间隙为1.5 mm。最后,使用Fastamp对其最大减薄率和最大增厚率进行仿真模拟,在此基础上进行了实际生产验证,最终制件的最大减薄率为20.6%,最大增厚率为7.4%,其成形效果良好、符合质量标准。该方法为提高汽车门框冲压成形质量提供了一种参考。

 For the complicated stamping process of an automobile door frame, which is prone to cracks and wrinkles, the drawing process with the greatest influence on the forming quality was selected and analyzed, and the drawing simulation model of automobile door frame was established based on the domestic software Fastamp. Then, the blank holder force, the friction coefficient, the stamping speed and the die clearance were selected as main influence factors of orthogonal test, and the orthogonal test with four factors and four levels was established. By the comprehensive scoring method and range analysis method, the optimum combination of process parameters was obtained with the friction coefficient of 0.105, the blank holder force of 2400 kN, the stamping speed of 3000 mm·s-1 and the die clearance of 1.5 mm. Finally, the maximum thinning rate and the maximum thickening rate were simulated by Fastamp, and on this basis, the actual production verification was conducted. The result shows that the final part has good forming effect with the maximum thinning rate of 20.6% and the maximum thickening rate of 7.4% to meet the quality standards, and this method provides a reference for improving the forming quality of automobile door frame.

 
基金项目:
基金项目:江苏省高等教育教改研究项目(2017JSJG068);扬州市科技计划立项项目(YZ2018143);扬州市职业大学科研重点项目(2017ZR03)
作者简介:
作者简介:张翔(1974-),男,硕士,副教授 E-mail:269690260@qq.com
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