Transactions of Materials and Heat Treatment

Title：Forming process analysis and die design on automobile fender

Authors： Wan Zhiyuan

Unit： The Academy of Mechanical Engineering Shandong Huayu University of Technology

KeyWords： fender process supplement surface blanking continuous die drawing die AutoForm

ClassificationCode：TG386

year,vol(issue):pagenumber：2023,48(8):202-209

Abstract：

Fender is one of the important outer covers for a car, and it has the characteristics of complex structure, large size, difficulty in forming control, high surface quality requirement and small material thickness, which is easy to produce springback defects. Therefore, firstly, fifteen typical cross-sections at the same position before and after process supplement of fender part were selected for structural analysis, the change of cross-section curve for the typical positions of part was obtained, and the process supplementary surfaces at the important positions overlapping with engine room assembly, engine cover assembly, front door assembly, side panel assembly, front wheel cover etc. were analyzed, laying the foundation for the subsequent design of the whole process. Secondly, according to the structural analysis, the process supplement for automobile fender was designed by AutoForm and other softwares, and the whole process with six processes of blanking, drawing, trimming-punching-side trimming, flanging-shaping-side flanging, side flanging-side punching-punching and side flanging-side forming were determined. Furthermore, the finite element simulation method was used to simulate the parts after process supplement. The results show that the forming quality of fender part is good, there is no cracking or wrinkling defects in the main positions, and the maximum thinning rate of material is 24.3%, which verifies the rationality of the process supplement. Finally, according to the process design, the blanking continuous die and drawing die of fender are mainly designed.

Funds：

山东华宇工学院校级协同创新中心 “智能装备技术研发协同创新中心”资助项目

作者简介：万志远（1988-），男，硕士，副教授，工程师 ,E-mail：815223128@qq.com

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