Transactions of Materials and Heat Treatment

Title：Radial expansion of inner shaft and its effect for automotive hub bearing unit during riveting assembly

Authors： Xiao Yunya Li Wei Yan Zhenhua Long Gui

Unit： Shaoguan University Hunan University

KeyWords： hub bearing riveting assembly radial expansion working clearance axial displacement

ClassificationCode：TG306

year,vol(issue):pagenumber：2019,44(12):91-98

Abstract：

The deformation law of radial expansion for inner shaft of automotive hub bearing unit and its effect on the diameter of inner ring and axial movement during riveting assembly were studied by the simulation and experiment, and the corresponding control measure was proposed. After riveting assembly, the riveted inner shaft end showed mushroom head shape, it had a convex contour within 10 mm from its top, and the radial expansion effect was remarkable. However, it had a concave contour in the range of 10-15 mm, the radial expansion effect converged rapidly, and the radial expansion almost disappeared at 19.5 mm. Furthermore, the inner ring was affected by the radial expansion and oscillation of the inner shaft, the amount of diameter increase was up to 0.2313 mm, and the maximum outer movement was reached 0.0635 mm resulting in the loose contact of two inner rings after riveting assembly. Finally, the inner ring structure was optimized by the inner hole with two arcs and two fold lines, which not only eliminated the extrusion deformation of the inner ring caused by the radial expansion of inner shaft during riveting assembly, but also retained the tenon structure of the inner shaft end.

Funds：

国家自然科学基金面上项目（51575358）；广东省自然科学基金面上项目（2015A030313749）；中央高校基本科研业务费资助（531118010341）

肖耘亚（1971-），男，博士，副教授，硕士生导师 E-mail：2092784984@qq.com 通讯作者：李伟（1983-），男，博士，助理教授，硕士生导师 E-mail：liwei@hnu.edu.cn

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