液体静压导轨初始液阻比的最优设计分析

液体静压导轨刚度是衡量导轨性能的关键指标之一。以采用固定液阻的液体静压导轨为研究对象,通过理论推导得出液体静压导轨刚度s与油膜位移率ε(t)、初始液阻比λ_0的数学方程,研究发现随着初始液阻比λ_0的增加,导轨出现明显的刚度峰值s_(max),该峰值随液阻比λ_0的增加而增大,且同时向曲线右侧偏移,但随着刚度峰值的增加s_(max),导轨承载能力下降,系统溢流损失增大。提出了一种以导轨受载工况时的刚度需求,确定最优初始液阻比的方法,为液体静压导轨的综合性能的提升提供了依据。

Optimal Design of Initial Liquid Resistance Ratio of Hydrostatic Guide

The hydrostatic guide stiffness is one of the key indicators to measure the performance of the guide. The hydrostatic guide with fixed liquid resistance were used as the research object, and the mathematical equations for the hydrostatic guide stiffness, oil film displacement ratio, and initial liquid resistance ratio were derived through theoretical derivation. The results show that with the increase of the initial liquid resistance ratio, the guide shows a distinct stiffness peak, the peak increases with the increase of the initial liquid resistance ratio, and moves to the right. As the stiffness peak increases, the bearing capacity of the guide decreases, and the system overflow loss increases. A method for determining the optimal initial liquid resistance ratio based on the stiffness of the guide under loading conditions is proposed, which provides a basis for improving the overall performance of the hydrostatic guide.