Transactions of Materials and Heat Treatment

Title：Design of multi-position progressive die for HJL.21 electrical switch

Authors： Yan Tiancan Mei Yi Wu Yanhua Wu Qiao Gan Shenglin Long Mengwei Liu Hongbo

Unit： Guizhou University

KeyWords： HJL.21 electrical switch layout design multi-position progressive die stamping die structure

ClassificationCode：TG385.2

year,vol(issue):pagenumber：2019,44(9):100-105

Abstract：

Taking HJL.21 electrical switch as an example, the application of multi-position progressive die in stamping process was analyzed. The multi-group design scheme of layout was completed, and the layout scheme of eight-position was finally determined. The contents of each position process are as follows: protruding and punching the guiding hole, punching the semi-circular hole, punching the middle bulk waste, punching the upper and lower area waste, punching the connecting waste of the middle part, vacancy position, Z-shape bending and cutting. According to the structural characteristics of electrical switch parts, the die frame of guide pillar and ball guiding was adopted, which works smoothly and has high guiding precision. The float device with guide groove was designed to ensure the orientation of vertical feeding direction. At the same time, the automatic feeding device was used to roughly locate the strip and the guide pin was precisely located to ensure the position of feeding step. Limiting device was installed in the die to avoid wear of punch and concave dies, and elastic unloading device was adopted to ensure the quality of stamping parts. The designed die structure is compact and stable, which provides certain theoretical guidance and technical support for the production of similar parts.

Funds：

贵州省科技计划项目(［2019］2019)；贵州省科技支撑计划（［2018］2175）

鄢天灿（1995-），男，硕士研究生 E-mail：2428232659@qq.com 通讯作者：梅益（1974-），男，博士，教授 E-mail：mei_yi@163.com

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