RESEARCH OF THE INFLUENCE OF TECHNOLOGICAL MACHINING CONDITIONS ON THE ACCUMULATION OF LATENT ENERGY DEFORMATION IN THE SURFACE PARTS
The results of the theoretical study of specific latent energy of deformation depending on machining conditions of mechanical operation (cutting speed, cutting feed, cutting depth) and geometric parameters of the cutting tool (the front and rear corners of the main and auxiliary cutting edge angles in plan, the radius of the rounding of the cutting edge and the radius of the apex angle in the plan), and physico-mechanical properties of the processed material (tensile strength, yield strength and relative extension) are stated. Mathematical dependency, allowing calculate the specific latent energy of deformation on the depth of work hardening (taking into account the initial microhardness of the material being processed) and graphic dependencies of specific latent energy of deformation from parameter of the cutting operation under turning are represented. Obtained dependences allow to calculate the specific latent deformation energy with the cutting speed and feed and depth of cut and the tool geometry (front and rear corners of the main and auxiliary cutting edge in terms of angles, the radius of rounding of the cutting edge radius and angle at the apex in terms) and physical-mechanical properties of the processed material (tensile strength, yield strength of the material being treated and its elongation). The dependencies for structural steels and for processing a titanium alloy and nickel superalloys were determined.