Transactions of Materials and Heat Treatment

Title：Research and application on near net forming process for automobile transmission shaft bushing

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ClassificationCode：TG316.3

year,vol(issue):pagenumber：2023,48(9):23-31

Abstract：

In order to solve the problems of low production efficiency and high cost in the cutting of an automobile transmission shaft bushing, two new machining processes were designed according to its structural characteristics and plastic forming theory, namely, the billet was made by cold heading firstly, and then the final forming was completed by a small amount of cutting, which increased the material utilization rate from 26.9% to 86.1%. Then, the forming of the cold heading part for the two processes was simulated by finite element software Deform-3D, respectively, the feasibility of the two processes was evaluated, and the equivalent stress, forming force and damage value of each station for the two processes were compared. The results show that the two processes can meet the forming requirements and obtain the expected billet parts. When the scheme 2 is adopted, the distributions of equivalent stress and damage values are better and the required forming force is smaller, which is beneficial to improve the quality of billet part and reduce the mold shock. Finally, the scheme 2 was applied to the machining of the shaft bushing, and production experiments were completed. The final billet part is well formed without defects, which is similar to the simulation results. After a small amount of final cutting, the size of shaft bushing fully meets the requirements, and compared with the previous process, the efficiency and cost are significantly improved.

Funds：

河南省高等学校重点科研项目（23B460027）

作者简介：高琳（1975-），女，学士，高级讲师 E-mail：gaolin19750@126.com

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