MODELING THE QUALITY PARAMETERS OF SURFACE, WHICH OBTAINED AS A RESULT OF MACHINING

Modeling of the microgeometry of the surface formed during mechanical processing in the manufacture of machine parts is considered as an alternative to operational quality control of the surface directly during the processing. Modeling is performed using the finite element method, taking into account the basic principles of steel material science, provisions of mechanics of a deformable solid and mechanical engineering technology. The article considers the force (dynamic) mechanism of microprofile formation determined by the action of cutting forces and stresses arising during chip formation as a result of elastic-plastic and plastic deformation of the material of the surface layer. Surface plastic deformation is considered for the analysis of the quality parameters of the part surface. The obtained results reflect the relationship between the height parameters of the workpiece surface microprofile and the processing conditions. The data obtained during modeling are consistent with the results of direct measurement of the height parameters of the processed surface microprofile.