The sliding-rolling mixed motion behavior degrades the ball screw’s precision at different levels. Based on the sliding-rolling mixed motion between ball and screw/nut raceway, the ball screw’s precision loss considering different given axial loading and rotational speed working conditions was investigated. Since creep and lubrication relate to sliding and rolling motion wear, the creep and lubrication characteristics are analyzed under different working conditions. Besides, the precision loss was calculated considering the sole influence of sliding behavior between ball and screw and compared with the results from other current models. Finally, research on precision loss owing to the sliding-rolling mixed motion behavior was realized under given working conditions, and suitable wear tests were carried out. The analytical results of precision loss are in good agreement with the experimental test conclusions, which is conducive to better predicting the law of precision loss in stable wear period.

滑动滚动混合运动行为在不同程度上降低了滚珠丝杠的精度。基于滚珠与丝杠/螺母滚道之间的滑动-滚动混合运动，研究了考虑不同给定轴向载荷和转速工况下滚珠丝杠的精度损失。由于蠕变和润滑与滑动和滚动运动磨损有关，因此分析了不同工况下的蠕变和润滑特性。此外，计算精度损失时考虑了滚珠和丝杠之间滑动行为的唯一影响，并与其他当前模型的结果进行了比较。最后，对给定工况下滑-滚混合运动行为造成的精度损失进行了研究，并进行了适当的磨损试验。