基于Romax的薄壁深沟球轴承寿命研究

Study on the life of thin-wall deep groove ball bearings based on Romax

为了研究工业机器人轴承高温工作条件下的寿命情况,基于Romax的仿真功能,建立了薄壁深沟球轴承的轴系仿真模型,在模型中分别进行了轴承工作温度的单因素试验和正交试验。仿真结果显示:Romax中轴承工作温度对轴承寿命的影响考虑了轴承材料的硬度下限;轴承的两种仿真寿命受轴承工作温度的影响是先保持不变,在分别达到178℃和184℃后,寿命不断下降;轴承转速、轴承径向载荷的增大都会降低轴承的寿命;薄壁深沟球轴承径向工作游隙对轴承寿命的影响为先增大后减小,在-0.002 mm时达到峰值,该研究对轴承在工程中的应用有一定的价值。

In this article,in order to explore the life of the industrial robot’s bearings under the high-temperature working conditions,the shafting simulation model of thin-walled deep groove ball bearings is set up based on the simulated function of Romax;a series of single-factor and orthogonal experiments are conducted on the working temperature of bearings.The simulation results show that the working temperature has an effect on the life of bearings with the lower limit of hardness taken into account in Romax.The two simulated life of bearings are affected by the working temperature,that is,firstly it remain unchanged,and then it declines continuously after reaching 178℃and 184℃respectively.The increase of the speed and the radial load will shorten the life of bearings;the radial working clearance of the thin-wall deep groove ball bearing will firstly increase and then decrease,reaching the peak at-0.002 mm.This research provides reference for the application of bearings in the field of engineering.