Control of roughness of surface during processing of workpieces made of hard-to-process and hardened materials

The paper presents the results of an experimental study of the roughness of the treated surface using various methods of data analysis, such as the analysis of Fourier spectra. Also in the work, the process of mechanical processing is considered from the standpoint of mesomechanics, which makes it possible to re-evaluate the process of chip formation. The paper says that the roughness of the treated surface, as an output parameter of the cutting process, has a special effect not only on the quality of the surface layer, but also on the performance characteristics of machine parts operating in extreme conditions. Also, the paper considers the nature of the formation of micro-roughness on the surface of parts after machining, and lists the factors that affect the roughness parameters. Conclusions are drawn about what determines the different frequencies of micro-roughness of the treated surface.