Transactions of Materials and Heat Treatment

Title：Design on progressive die based on sheet metal shell of stapler

Authors：

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ClassificationCode：TG385

year,vol(issue):pagenumber：2021,46(3):192-197

Abstract：

The structure features and stamping processability of sheet metal shell part for stapler were analyzed, and its forming difficulty was locked on the small holes and small hole countersunk heads on the side of product. Then, combined with the production requirements, a progressive die process plan with 14-station was proposed, and the strip diagram of the progressive die was also determined. According to the difficulties of forming process, the structures of sliding block and the side punching needle were introduced, the oblique wedges were set on both sides of slider, and the head of side punching needle was designed as a conical shape, which served as a positioning device to stabilize the shape of side hole. When punching the side holes, the springkack of sheet metal material was reasonably used to make the countersunk head of small hole on the side of product get out of the recess of punch under the action of springback so as to demold smoothly, and the suction was also used to remove chips. At last, the die assembly drawing was finished, and the working process was demonstrated. The results show that the sheet metal shell of stapler is formed by a set of progressive die, which continuously realizes punching, bending, embossing, forming and other processes and achieves high-efficient stamping production to provide certain theoretical guidance and technical support for the production of similar parts.

Funds：

郴州市科技局科技创新能力培育计划（ZDYF2020209）；湖南省教育厅科技处项目（20C0262）

陈婵娟（1981-），女，硕士，副教授 E-mail：392231289@qq.com

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