Study on Lubrication Characteristics of Surface Textured Slipper Pairs for Axial Piston Pumps
Aiming at the issue of lubricating property in the slipper pairs of axial piston pumps,micro textures are arranged on the surface of the sliding shoes textured surface slipper pairs of axial piston pumps,an orthogonal experimental scheme was adopted to simulate and study the effects of operating parameters(film thickness,speed),surface texture shape parameters(pit shape,diameter,depth to diameter ratio),and area ratio on the surface bearing capacity of the slipper pairs.The results showed that the primary and secondary order of the multiple influencing factors was speed,area ratio,pit shape,diameter,depth to diameter ratio,and film thickness.The optimal combination of multiple factors was speed 1500 r/min,area ratio 20％,spherical shape,diameter 500 μm,depth to diameter ratio 0.4,and film thickness 20μm;Based on pressure and velocity cloud maps,the fluid dynamic lubrication effect of textured surfaces and the mechanism of improving surface bearing capacity were analyzed.On the basis of the optimal combination,the impact of single factor changes on bearing capacity was analyzed.
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