Surface-generation mechanism in machining process: extract from a paper presented at the world tribology congress

摘要

With the numerous increases in the demand for high precision and quality machining, the control of surface texture and finishing processes have increasingly come to anew level of accuracy. Nakajima et al. examined the simulation of ground surface profile and obtained a fairly good agreement with the experimental results. Sakai et al. also studied the simulation of grinding process. The surface-generation mechanism of the burnishing action caused by the rubbing motion between the relief surface of cutting tool or the abrasive grains of grinding wheel and the machined surface, however, has not been clarified. In a previous report, the surface improvement ratio, ie, the ratio of the deformed height to the original height of asperities during burnishing action were examined under various burnishing speed and load conditions. In this study, the surface-generation mechanism upon burnishing action during machining process such as cutting or grinding was examined fundamentally. Moreover, the deformation process during burnishing action was examined theoretically based on Hill's plastic theory (1948).