Transactions of Materials and Heat Treatment

Title：Design on multi-step stamping forming process and numerical simulation for spring seat based on Dynaform

Authors： Wu Lei Jiang Jianyu Yu Yaxin

Unit： Zhejiang Sci-Tech University

KeyWords： stamping forming multi-step process spring seat Dynaform numerical simulation

ClassificationCode：TG386

year,vol(issue):pagenumber：2018,43(1):41-45

Abstract：

For the structure characteristics of a spring seat, the stamping forming scheme of this part with six steps including drawing, sizing, trimming, forming, piercing and hole flanging was designed by adopting inverse unfolding approach combining software UG and Dynaform. Then, the numerical simulation analysis model of whole forming process for this spring seat was established by multi-step forming simulation method, and the defects such as wrinkle, crack and springback were analyzed. Through optimizing process parameters, after spring seat forming, the thickening rate of blank is not more than 20%, the thinning rate of blank is not more than 30%, and the springback value of part is less than 0.25 mm. Thus, the forming requirement of part is satisfied. Based on all numerical simulation analysis results, the dies of six steps for this spring seat are designed, and the forming quality of trial production meets the quality detection requirement well. At present, the mass production is conducted.

Funds：

浙江省公益技术应用研究项目（2017C32048）

作者简介：吴磊（1992-），男，硕士研究生，E-mail：15967189863@163.com；通讯作者：俞亚新（1974-），女，博士，副教授，E-mail：yyxin@zstu.edu.cn

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