Transactions of Materials and Heat Treatment

Title：Design on multi-station progressive die for complex bracket of electronic product

Authors： Yu Renping Si Guolei

Unit： Yantai Vocational College Sichuan Aerospace Fenghuo Servo Control Technology Corporation

KeyWords： bracket bulging elastic ejection slide mechanism multi-station progressive die bilateral alignment

ClassificationCode：TG386

year,vol(issue):pagenumber：2020,45(12):136-140

Abstract：

The forming characteristics and process difficulties for the complex bracket of electronic product were analyzed, and the layout and structure of multi-station progressive die were designed. Then, the asymmetrical stamping was changed to symmetrical stamping by the layout design of bilateral alignment to improve the product quality and production efficiency, and the process bending edges were designed in the intermediate support to increase the rigidity of strip. Furthermore, the accuracy of progressive die was ensured by fixing the distance with many guide pins and positioning accurately with guide needle, the influence of side stamping force during bending was decreased by equipping with the opposite side pressure block at the bending station, the elastic discharge device was adopted in the die，and the elastic ejection slide mechanism was designed. In addition, the process sequence of punching first and then bending was adopted, and in the bending process the outer edge was bent and then the inner edge was bent, which not only ensured the workpiece quality, but also simplified the die structure. The production results show that the processing technology of bracket is reasonable, and the structure of multi-station progressive die is compact, which meets the requirements of dimensional accuracy and production efficiency of parts.

Funds：

山东省高等学校青创科技支持计划（2019KJB001）；烟台职业学院横向研究课题（HX2020019）

于仁萍（1979-），女，硕士，副教授 E-mail：yurenping1111@163com

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