Transactions of Materials and Heat Treatment

Title：Cross wedge rolling process for automobile rear axle drive gear billet

Authors： Liu Xin Zhou Yufei Zhu Chundong Men Zhengxing Su Yanhong Ran Maowen

Unit： Chengdu Aeronautic Polytechnic Harbin Electric Machinery Company Limited Wuhan University of Technology

KeyWords： automobile rear axle cross wedge rolling drive gear slotting core damage

ClassificationCode：TG331

year,vol(issue):pagenumber：2022,47(10):198-202

Abstract：

The automobile rear axle drive gear is the key part of automobile power transmission system. Therefore, for the problems of low production efficiency and low material utilization rate in its traditional manufacturing process “hammer drawing-die forging”, “wedge cross rolling-die forging” process was proposed to produce the rear axle drive gear of automobile, and the structure of drive gear part was optimized. Then, the step of rod part was cancelled, and the rolling billet with a rod inclination angle of about 2° was rolled, so as to realize the universalization of blank making die of cross wedge rolling for the drive gear. Furthermore, in order to solve the problem that the rolling part did not rotate in the process of cross wedge rolling, the groove with semicircular cross section or triangular cross section produced on the side wedge surface of the cross wedge rolling die was proposed, and it was found that the groove with triangular cross-section was more suitable for the rotation condition. Finally, the influence laws of different process parameters on the damage value of the core were studied. The results are helpful to improve the production efficiency of the drive gear

Funds：

四川省科技计划项目（2019YJ0519）

刘鑫（1995-），男，硕士，助教，E-mail：liuxin102112@sina.com；通信作者：周宇飞（1995-），男，硕士，中级工程师，E-mail：2992372688@qq.com

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