Abstract
Hydrostatic linear guide is often used in high-precision machine tools as a sliding platform because of many potential advantages, including low straightness ripple, high squeeze film damping, high static stiffness, and comparably low frictional characteristics at low operation speeds. However, the manufacture of the internal oil circuit in hydrostatic linear guide is complicated, the design of oil recesses and the direction of loading should be considered. In this study, a design of hydrostatic journal guide is presented to overcome the disadvantage of traditional hydrostatic linear guide. Journal bearing is generally used on a rotating spindle, many previous studies have focused on the effects of eccentric of bearing, attitude angle and different rotational speed on system performance. The research about its application on a linear motion is rarely. Therefore, the aim of this study is to form a theoretical model and simulation program of hydrostatic journal guide to analysis the effects of system parameters included eccentricity, concentric pressure ratio, misalignment factor, sliding speed, land width, sill angle, attitude angle and groove structures. A test bench of hydrostatic journal guide also designed to verify simulation results. These results provide a formulation for the design of hydrostatic journal guide.