Hydrostatic thrust bearings have been applied in high speed and heavy load machine tools because they provide superior characteristics such as higher positional accuracy, greater stability, and lower friction. The energy consumption of the fluid system exceeds 40% of the total energy consumption of the machine tools To reduce the energy consumption, it is usually necessary to optimize comprehensive tribological properties of multi-pad hydrostatic thrust bearing in CNC vertical processing equipment from the perspective of the oil recess structure. Effects of oil recess structural parameters on comprehensive tribological properties in multi-pad hydrostatic thrust bearing are investigated using CFD (Computational Fluid Dynamics) and lubrication theory. Focusing on this problem, this study comprehensively investigates the effects of oil recess shape, oil recess depth, land width on the tribological properties of hydrostatic thrust bearing using numerical simulation method. The relationships between the optimal comprehensive tribological properties and structural parameters are determined. An experimental rig is set up to verify the correctness of the numerical simulation method. The results indicate that to get an optimal comprehensive performance from hydrostatic bearing based on low power consumption, it is necessary to choose a proper of oil recess structural parameters.

中文翻译：

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基于低功耗的数控立式加工设备多瓦静压推力轴承油槽结构参数对综合摩擦学性能的影响

静压推力轴承因其具有更高的位置精度、更高的稳定性和更低的摩擦等优越特性而被应用于高速重载机床。流体系统能耗超过机床总能耗的40%，为降低能耗，通常需要从以下角度对数控立式加工设备多瓦块静压推力轴承的综合摩擦学性能进行优化：油槽结构。利用CFD（计算流体动力学）和润滑理论研究了油槽结构参数对多瓦块静压推力轴承综合摩擦学性能的影响。针对这一问题，本文采用数值模拟方法综合研究了油槽形状、油槽深度、刃带宽度对静压推力轴承摩擦学性能的影响。确定了最佳综合摩擦学性能与结构参数之间的关系。搭建实验台验证数值模拟方法的正确性。研究结果表明，要使静压轴承在低功耗的基础上获得最佳的综合性能，必须选择合适的油槽结构参数。