Технічна інженерія (Dec 2022)
The influence of oblique geometry face mill on the cutting temperature during finishing and semi-finishing flat surface
Abstract
Processing of materials by cutting is the main method of manufacturing engineering products. According to the analysis of the authors published works, which investigated the process of finishing parts by face milling, the feasibility of using face milling processes for the final formation surface layer of the parts being processed has been established. At the same time, there are significant advantages of technological processes using face mills for oblique cutting, equipped with superhard materials, with a spiral-stepped arrangement of cutting elements. Along with the important factor of the cutting process, which affects the stability of the tool and the quality of the machined surface, is the cutting temperature. The study of the cutting temperature during machining, including face milling, plays an important role. Heating the cutting edge of the tool during the cutting process causes a change in the structure and mechanical properties of the material, and when certain temperature values are reached, it contributes to the intensification of adhesion and diffusion phenomena. All this helps to accelerate the wear of the tool and reduce its stability. This work is devoted to the study of the influence of the inclination angle of the oblique face mill cutting edge on the cutting temperature when processing the flat surface of a workpiece made of gray cast iron and carbon tool steel using the Deform-3D program. On the according research results were plotted graphs dependence of the temperature on the front surface of the face mill insert on the angle inclination of the main cutting edge and on the feed per tooth Sz (mm/tooth). The dynamics wear of the face mill insert in the machining gray cast iron is substantiated. At the same time, the optimal values of the angle inclination of the main cutting edge are determined, which in turn will increase the stability of the tool and the quality of the machined surface.
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