V-shaped sliding guideways are still used in many mechanical equipments due to their advantages of low cost,good load-bearing capacity,and good guidance.However,the guideways also have disadvantages such as high friction coefficient,high wear rate,and poor low-speed stability.To enhance the tribological performance of V-shaped sliding guideways,laser surface texturing technology was used to design and prepare linear and elliptical micro-textures on the contact surfaces of the guideways.Through different simulation software,it was verified that micro-textures can generate hydrodynamic action,and the influence of micro-textures on the contact stress of the guideway contact surface was analyzed.The friction and wear properties of different types of textured guideways were tested by a self-made reciprocating sliding guideway test platform under mixed lubrication condition.The results indicate that textured guideways can generate hydrodynamic action,and elliptical micro-textures can generate larger hydrodynamic action.In addition,the elliptical micro-textures located only on the surface of the lower guideway can significantly reduce its contact stress.Therefore,when the elliptical micro-textures are located on the surface of the lower guideway,the friction reduction effect is the best,with the lowest average friction coefficient,which is reduced by 31.7%compared to the guideways without textures.
维普
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