Transactions of Materials and Heat Treatment

Title：Forming simulation and process optimization on automobile skylight reinforcement ring based on Autoform

Authors： Quan Hong Zhang Haibo

Unit： Northeast Electric Power University

KeyWords： skylight reinforcement ring stamping process drawbead blank holder force cracking

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2020,45(6):53-58

Abstract：

For the skylight reinforcement ring of a certain model automobile, its stamping process was preliminarily designed as drawingtrimming, punchingtrimming, punchingflanging by analyzing its structure. Then, the parameters, such as blank holder force, friction coefficient, drawbead resistance coefficient and process supplement, were preliminarily selected, and its forming process was numerically simulated by Autoform. According to the wrinkling, thinning, cracking and other defects in the simulation results and the structure of product, the blank holder force, friction coefficient and drawing process were adjusted to obtain the process parameters and stamping process that were in line with the actual production. Finally, the process parameters were determined as follows the blank holder force of 2400 kN, the clearance between punch and die of 1.2 mm and the friction coefficient of 0.15, and the stamping process was designed as drawingtrimming, punchingtrimming, punchingflanging, shapingpunching. According to the determined process parameters, the forming experiment was conducted, and the qualified parts were obtained to reduce the design cost of mold effectively.

Funds：

权宏（1992-），男，硕士研究生 E-mail：384370625@qq.com 通讯作者：张海波（1970-），男，博士，教授，硕士生导师 E-mail：zhbzhb1970@163.com

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