Abstract: Carrying capacity and oil-film stiffness of hydrostatic guide-way are two important technical parameters. In order to meet the requirements of high precision CNC machine tool for hydrosta-tic guide-way, a new type hydrostatic guide-way with high liquid resistance was put forward based on local pressure loss theory. The simulations were done, which showed the effects of the position, width and depth of oil ring at resistive oil edges of the new hydrostatic guide-way on the oil chamber pressure. It is shown from the results that oil chamber pressures of hydrostatic guide-way may be enhanced significantly if the position, width and depth of the oil ring at resistive oil edges are appropriate. It is verified that the carrying capacity and oil-film stiffness of the new type hydrostatic guide-way with high liquid resistance are improved through the experiments.

Key words: oil-film stiffness, carry capacity, oil ring, hydrostatic guide-way with high liquid resistance

摘要： 液体静压导轨的承载能力和油膜刚度是衡量其性能的两个技术指标。为满足高精密数控机床对静压导轨性能要求，基于局部压力损失理论提出了一种新型高液阻液体静压导轨。通过仿真分析了新型高液阻静压导轨封油面上的油槽位置、宽度和深度对油腔压力的影响。研究表明，在静压导轨的封油面上开设结构参数合理的油槽可提高液体静压导轨的油腔压力。实验结果验证了所设计的高液阻静压导轨能有效提高液体静压导轨的承载能力和刚度。

关键词: 油膜刚度, 承载能力, 油槽, 高液阻静压导轨