This paper presents a dynamic reliability analysis method of rolling linear guide considering the uncertainty of geometric parameters. A three degree of freedom (DOF) dynamic motion model of rolling linear guide that considers the complexity of the actual load is established. In order to improve the accuracy of reliability evaluation, interval model is used to express the uncertainty of geometric parameters. The reliability range of dynamic response is determined according to the accuracy grade of rolling linear guide. The interval reliability calculation method is used to analyze and calculate the horizontal and vertical dynamic reliability of rolling linear guide. Then, the comprehensive dynamic reliability of rolling linear guide is obtained. Finally, the dynamic reliability of the SHS-45R rolling linear guide is analyzed by using the reliability evaluation method described in this paper. And the validity and accuracy of the result is demonstrated by comparing with the Monte Carlo simulation.

提出了一种考虑几何参数不确定性的滚动直线导轨的动态可靠性分析方法。建立了考虑实际载荷复杂度的滚动直线导轨的三自由度（DOF）动态运动模型。为了提高可靠性评估的准确性，采用区间模型表示几何参数的不确定性。动态响应的可靠性范围取决于滚动直线导轨的精度等级。区间可靠性计算方法用于分析和计算滚动直线导轨的水平和垂直动态可靠性。然后，获得了滚动直线导轨的综合动态可靠性。最后，利用本文所述的可靠性评估方法对SHS-45R滚动直线导轨的动态可靠性进行了分析。通过与蒙特卡洛模拟的比较，证明了该结果的有效性和准确性。