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研制了轴承预紧力测试装置,通过该试验装置对预紧力和系统固有频率的关系进行了研究.对轴承预紧力随系统固有频率变化的试验数据进行了拟合.结果表明:该试验装置从一定程度上反映了轴承的预紧特性.固有频率随轴承预紧力的增大而增大,相同的预紧力下,系统固有频率随轴承支承跨距的增大而增大.拟合得到的预紧力-固有频率-支承跨距关系式精度较高.
The test device of bearing pretightening force was developed and the relation between the pretightening force and the natural frequency of the system was studied.The test data of bearing pretightening force with the variation of the natural frequency of the system were fitted.The results show that the test The device reflects the preload characteristics of the bearing to a certain extent.The natural frequency increases with the increase of bearing preload, and with the same preload, the natural frequency of the system increases with the increase of bearing span. The resulting preload - natural frequency - bearing span relationship between the higher accuracy.