Transactions of Materials and Heat Treatment

Title：Design on multi-position progressive die for stiffener of automotive beam

Authors： Wang Erdong Xu Xiao Xia Qinxiang Yao Xiaochun Long Liren

Unit： South China University of Technology Dongguan Vision Tool & Mould Co. Ltd.

KeyWords： stiffener of automotive beam multi-position progressive die single peak and inclined blade structure bending-drawing inverted wedge mechanism

ClassificationCode：TG385.2

year,vol(issue):pagenumber：2015,40(12):87-91

Abstract：

The structural parts made by high strength steel are applied more and more extensively in the automotive to improve the security and reduce the weight. The material of the stiffener of automotive beam is GMW3032M-ST-S-CR340LA, which is complex and of high precision requirement. The stamping process of the automotive part was analyzed based on its structure characteristics, and the 12-position progressive stamping processes with double-row and intermediate carrier were determined. Further, the total structure and the key processing structure of the die were designed. Some blanking punches were of a single peak and inclined blade structure to effectively reduce the blanking force. The bending-drawing composite structure reduced the positions of the multi-position progressive die. The inverted wedge mechanism was designed to simplify the manufacturing processes and to pick and put workpiece conveniently. The trial test shows that the size dimension of the parts produced by this die can meet the technology requirement，and the produce efficiency is high.

Funds：

广东省高等学校高层次人才项目(x2jqN9101140)；顺德区产学研合作项目（2014CXY18）

作者简介：王二冬（1987-），男，硕士研究生通讯作者: 夏琴香(1964-),女，博士，教授

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