№3 (58), 2021. TECHNOLOGY AND EQUIPMENT OF MECHANICAL AND PHYSICAL-TECHNICAL PROCESSING

The article presents the results of a study of the cutting temperature when deploying holes from composite 01. The study of temperature is necessary to study the coefficient of friction and the general characteristics of the thermal situation on the contact surfaces of the tool with the workpiece and chips. The results of the study of the cutting temperature using high-performance and wear-resistant metal-cutting tools are shown. Among the most labor-intensive machining operations of parts with a hardness of HRC > 55 is the deployment of precise holes with a tool made of composite 01. The temperature was measured by an artificial thermocouple on a specially designed installation consisting of a two-component strain gauge dynamometer for measuring the components of the cutting forces, an artificial thermocouple, an amplifier and an oscilloscope. Based on the study of the dependence of cutting temperature in equation of power type, to calculate cutting temperatures when you deploy SHKH15 steel (HRC 62 to 65) tool composite 01 from the elements of regime cutting. It is stated that the obtained dependence can be used in practice to calculate the cutting temperature in order to predict the deformation hardening, residual stresses and structural transformations in the surface layer after processing, as well as to optimize the cutting mode.