Calculation and test of spindle shaft neck static strength of non drive wheel hub bearing unit
DU Li jun1, CHEN Fang hua2, ZHANG You liang2

(1.Hangzhou Radical Energy Saving Technology Co., Ltd., Hangzhou 311231, China;
2.Zhejiang Mechanical & Electrical Products Quality Inspection, Hangzhou 310051, China)


Abstract: Aiming at the wheel hub unit static strength calculation and experiment validation issues, and according to the loading situation of the third generation non driving wheel hub bearing unit, instead of using CAE simulation analysis method, a simple numerical computation method is provided, namely under 1.2 g lateral acceleration, the wheel hub bearing unit is forced by external radial force and axial force, through internal force analysis, wheel hub bearing unit is converted into the radial force and axial force of the two internal double raceway load centers, and the wheel hub bearing forced axis neck has been equivalent to solid cantilever beam, to calculate the spindle shaft neck static strength, and with the lateral static strength test method, the appropriate test plan is built to verify the hub bearing unit spindle static strength, an easy validation method is provided for the design optimization. The results indicate that the simplified model calculations can be consistent with the lateral static strength test results, using the simplified calculation method for us to easily select spindle diameter and shaft neck r size, and the method is effective, simple and convenient, calculation result is reliable.

Key words: non drive wheel; wheel hub bearing unit; spindle; static strength calculation; test verification