Transactions of Materials and Heat Treatment

Title：Design on deep drawing progressive die with deformable lap edge for micro motor housing

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ClassificationCode：TG386

year,vol(issue):pagenumber：2020,45(11):177-180

Abstract：

For a micro motor housing, its structure characteristics and stamping technology were analyzed, and a progressive stamping process scheme was designed with seventeen steps including deep drawing, punching, flanging, reaming, trimming, blanking, etc. Then, the layout method with intermediate carrier and the deformable lap edge form were adopted, and the progressive die structure composed of seven modules which were ejection port and insert type was designed. The test results show that the material utilization rate of deformable lap edge method is 83.4%, which not only improves the material utilization rate, reduces the production cost, but also improves the metal fluidity, and it is more conducive to deep drawing deformation of part on the basis of ensuring precision. Furthermore, the insert die structure has good interchangeability and is easy to repair, and the hanging wedge structure is adopted to complete the punching and blanking processes so that the die has a compact structure. In addition, the designs of deformable lap edge, layout scheme and progressive die structure are reasonable and feasible to meet the requirements of actual production.

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魏婉珠（1994-），女，硕士研究生 E-mail：946325768@qq.com；通讯作者：黄珍媛（1975-），女，博士，副教授 E-mail：2610597@qq.com

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