滚动轴承的动力学仿真分析

The Dynamics Simulation of the Rolling Bearing

在动力伺服刀架中,轴承的动力学特性很重要,影响到刀架的精度以及可靠性。基于UG和ANSYS/LS-DYNA以轴承的几何学为基础建立有限元模型,同时在轴承内圈加入轴颈模拟轴与轴承之间力的传递。以动力伺服刀架中双联齿轮处的深沟球轴承6203为例,综合考虑轴承的径向载荷和转速的影响,应用ANSYS/LS-DYNA对滚动轴承在特定工况下进行显式动力学仿真与分析,得出了轴承的动态响应。结果与滚动轴承的实际运动情况吻合良好,为进一步研究滚动轴承的动力学特性提供了更可靠的依据。

In the power servo tool turret, the bearing is one of the most important part. It will affect the accuracy and related reliability index. With the bearing geometry as the foundation, based on the UG and ANSYS/LS-DYNA, it established the finite element model of the rolling bearing, and at the same time join a shaft in bearing inner ring to simulate the force transfer between the shaft and bearing. It takes the deep groove ball bearing 6203 in power servo tool turret in duplicate gear as an example. Comprehensive consideration of the influence of the bearing radial load and the rotational speed, it takes the application of ANSYS/LS-DYNA for dynamic simulation and analysis when the bearing in certain a condition. Getting the result of the dynamic response of the bearing, it turned out that the result made a good agreement with the actual situation of rolling bearing movement, and provided a more reliable basis for the study of dynamic characteristics of rolling bearing.