A micro-nano textured guide rail and method based on ultrasonic rolling and femtosecond laser processing

Abstract

The present disclosure provides a micro-nano textured guide rail and method based on ultrasonic rolling and femtosecond laser processing, and relates to the field of guide rail surface treatment, including a guide rail base body, the surface of the guide rail base body is provided with a plurality of transverse grooves and a plurality of longitudinal grooves, The transverse grooves intersect with the longitudinal grooves to form grid-like micro-textured grooves. The micro-textured grooves are provided with nano-textured grooves arranged at intervals in sequence. The nano-textured grooves are parallel to the transverse grooves or the longitudinal grooves. In view of the problem that the surface texture of the guide rail substrate is difficult to meet the sliding requirements of the machine tool, when the surface of the guide rail substrate is processed, the micro-textured grooves are first processed by ultrasonic rolling, and then the micro-textured grooves are processed by femtosecond laser. The nano-textured groove is processed to realize the preparation of the micro-nano composite textured guide rail, thereby improving the tribological performance of the guide rail and prolonging the service life of the guide rail.

Description

technical field [0001] The present disclosure relates to the field of guide rail surface treatment, in particular to a micro-nano texture guide rail and method based on ultrasonic rolling and femtosecond laser processing. Background technique [0002] As the main component in the complete system of precision and ultra-precision machine tools, the machine tool guide rail plays the role of support and guidance, and its performance directly affects the machining accuracy of the machine tool. However, the mutual friction and wear of the sliding guide rails during the working process will lead to a decrease in the motion accuracy and affect the overall service life of the machine tool. Therefore, the wear resistance of the machine tool guide rails is one of the important indicators of the overall performance of the machine tool. [0003] Using the surface texture technology of the substrate to process the micro-texture in an orderly arrangement on the surface of the grinding pair...

AI Technical Summary

Problems solved by technology

The existing patent discloses a micro-nano composite textured guide rail and its preparation method (application number 2018115262772). The method uses a laser marking machine to process linear micro-textured grooves perpendicular to the sliding direction on the fixed guide rail, and passes Femtosecond laser technology processes nano-textured grooves perpendicular to the sliding direction on the sliding guide rail, which can enhance lubrication, reduce friction, and improve the performance of the guide rail. However, the micro-texture processed by laser marking machines is easily affected by heat. As a result, defects such as slag protrusions are generated, resulting in poor surface quality and short wear life of the texture. When the micro-texture is completely worn, the degree of wear of the matrix after participating in friction will increase, so it can improve the tribological performance of the guide rail. There are limitations; a micro-textured aerospace spherical plain bearing and its manufacturing method are also disclosed (application number 2016104952385), which uses an ultrasonic rolling tool with micro-protrusions to roll the outer surface of the spherical plain bearing inner ring and The inner surface of the outer ring, so as to realize the shaping of the surface micro-texture; however, the accuracy of the ultrasonic rolling tool head with micro-protrusions is difficult to guarantee, and secondly, the micro-protrusions on the rolling tool head are in the process of ultrasonic vibration and rolling It will produce a "micro-cutting" effect on the processed surface, thereby scratching and straining the processed surface, affecting the quality of the processed surface, and the strength of the micro-protruded rolling tool head is reduced due to a large amount of material removal, and the service life is shortened; resulting in the current The substrate surface texturing technology is difficult to meet the needs of machine tool slide rails

Images