高速重载静压推力轴承温度场速度特性

Velocity Performance of Temperature Field of High Speed and High Load Hydrostatic Thrust Bearing

针对重型立式数控装备中所用的大尺寸静压推力轴承的润滑问题,建立了模拟静压推力轴承本体及间隙油膜三维流动的数学模型及边界条件,采用ICEMCFD软件对环形腔的静压推力轴承内部流体温度场进行仿真模拟,获得了旋转速度和间隙油膜温度的关系,得到了其温度场的分布规律.结果表明:间隙油膜温度随着工作台旋转速度增加而增加,最高温度出现在半径内侧与外侧封油边和油腔形成的阶梯附近,最低温度出现在回油槽处.

Abstract： For the problem of the jumbo size hydrostatic thrust bearing＇ s lubrication in heavy duty vertical CNC equipment, we build the simulated body of hydrostatic thrust bearing, mathematical model of the clearance oil film＇ s three-dimensional flow and boundary condition, using ICEM CFD in the analogue to simulatie the tempera- ture field of ring cavity＇ s hydrostatic thrust bearing＇ s internal fluid, obtaining the relationship between rotational speed and the temperature of the clearance oil film, and gaining the regularities of distribution of the temperature field. The results show that ： the temperature of the clearance oil film rises as the rise＂ of the workbench＇ s rotational speed, the maximum temperature appears around the ladder that is formed by along the radius＇ s medial, the lateral sealing side and oil cavity, and minimum temperature appears in the space of return chute.