Transactions of Materials and Heat Treatment

Title：Backward extrusion process analysis and punch structure optimization of sliding sleeve for automobile constant velocity universal joint

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ClassificationCode：TG375+41

year,vol(issue):pagenumber：2022,47(7):206-212

Abstract：

For the backward extrusion process, three different forms of backward extrusion punch were designed based on platform Deform-3D. Then, the numerical simulation was carried out respectively, and the forming condition of sliding sleeve and the wear depth of each punch structure were compared. In order to maximize the service life of the backward extrusion punch, a second-order polynomial model for the working belt height of punch, the front cone angle of punch, the top spherical radius of punch and the wear depth of punch was established by response surface method. The results show that the front cone angle of punch has the most significant effect on the wear of punch, while the top spherical radius of punch has the least effect. The optimal parameters of punch are the working belt height of 17.5 mm, the front cone angle of 19°, and the top spherical radius of 13.5 mm. Finally, the life of punch was estimated and compared with the actual life. At the same time, the sliding sleeve of universal joint with better appearance was obtained.

Funds：

江苏省教育厅2019年度高校优秀科技创新团队“先进集成电路封装模具技术”（2019SJK07）

作者简介：陈熠道（1986-），男，硕士，实验师 E-mail：929179172@qq.com 通信作者：邓小龙（1972-），男，博士，教授 E-mail：854896087@qq.com

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