Transactions of Materials and Heat Treatment

Title：Design on multi-station progressive die for automotive energy absorbing box parts

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ClassificationCode：U468.2；TG385.2

year,vol(issue):pagenumber：2024,49(1):196-201

Abstract：

For the automotive energy absorbing box parts with large thickness, high strength, difficult to form and high dimensional accuracy requirement, the 14-station progressive die stamping scheme for straight-line intermediate carrier layout design was determined through process analysis, and the material utilization rate reached 75.14%. Then, the amount of springback deformation during the product forming process was analyzed by finite element simulation method, and the problem of springback out-of-tolerance was solved by applying compensation at the side shaping station. Furthermore, the method of punching first and then forming was used to solve the problem that the collapsed hole located on the fillet could not be directly blanked, and the punch was fixed in the form of hanging table and a back support plate to solve the problem of unbalanced blanking force caused by unclosed blanking profile. Finally, the wedge-shaped retraction mechanism was designed to solve the problem that the stamping negative angles of parts could not be directly formed. The trial production results show that the progressive die design is reasonable and reliable, the product quality meets the requirements, and the production efficiency is high.

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作者简介：苏达权(1998-)，男，硕士研究生 E-mail：1045301592@qq.com 通信作者：黄珍媛(1975-)，女，博士，副教授 E-mail：zhenyuan@scut.edu.cn

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