关键词: 初始油膜厚度, 供油压力, 时域分析, 液体圆柱静压导轨, 油液黏度

Abstract: In order to analyze the influence of the initial parameters of cylindrical hydrostatic slide on the performance of the cylinder hydrostatic slide in the form of inner feedback throttle, the force balance equation and the flow continuity equations are established. With derivation and linearization, the linear differential equations of the cylinder hydrostatic slide are obtained. Then use Laplace transform to get the transfer function, and deduce the mathematical model of the cylindrical hydrostatic slide. And then the influence of the initial oil film thickness and oil viscosity, oil supply pressure on the performance of the slide are analyzed from the time domain and frequency domain. The research shows that reducing the initial thickness of oil film, increasing the oil viscosity and oil pressure in low frequency and increasing the initial thickness of oil film in high frequency can improve the dynamic stiffness and stability of the bearing and reduce the relative steady displacement value. In high frequency, the oil viscosity, oil supply pressure have little effect on the dynamic performance of the cylinder hydrostatic slide. The research has certain reference value on the design of the cylinder hydrostatic slide.

Key words: cylindrical hydrostatic slide, initial oil film thickness, oil pressure, oil viscosity, time domain analysis