Transactions of Materials and Heat Treatment

Title：Spring-back control on front rail of auto-body

Authors： Li Caixia Yang Yan

Unit： Chongqing Technology & Business Institute Chongqing University

KeyWords： front rail of auto-body spring-back control finite element model deviation analysis die surface compensation drawing

ClassificationCode：TG386

year,vol(issue):pagenumber：2016,41(11):58-61

Abstract：

For the spring-back problem in forming of high-strength front rail, the finite element model (FEM) of front rail was established by Dynaform, and the spring-back process was simulated and the value of spring-back was predicted. Then, the deviation analysis and die surface compensation were made according to the spring-back prediction. Then, areas such as the top plate, the side wall and the flange were compensated in the drawing, and the drawing die was manufactured to produce the product. Furthermore, a qualified part was obtained after trimming. Finally, the test part was verified by the white light scanning. The result shows that the deviation of each detection point is above 95%, which means that the spring-back is controlled among the allowance range.

Funds：

重庆市教委科学技术研究项目（KJ1503906）

李彩霞(1984-)，女，硕士，副教授

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