切削工具逃げ面摩耗痕の温度分布 [in Japanese] Temperature Distribution on the Wear Land of Cutting Tools [in Japanese]
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The paper proposes a special model for the chip forming process based on a simple shear plane cutting model, which determines temperature distribution on the wear land of cutting tools. The propriety of the model is verifed by comparing the calculated temperature with the measured one, which is obtained by means of a special micro-thermocouple technique. The results obtained are as follows : (1) Moving the shear plane forward and downward from the cutting edge makes it possible to take into account the distributions of heat sources and velocities in the primary shear zone. (2) The profile of temperatures on the wear land is the same as that on the rake face, while both the maximum temperature and the difference between max. and min. temperatures are lower than those on the rake face. (3) The distribution of frictional tress on the wear land is uniform, and the magnitude is nearly half the maximum frictional stress on the rake face. (4) When cutting 0.46％C carbon steel with a worn carbide cutting tool having a wear land length of 0.6 mm, the Temperature on the workpiece surface rises 60 K at a cutting speed of 3.33 m/s. (5) The temperature on the wear land fluctuates by about 200 K when tool vibration occurs.
北見工業大学研究報告 14(1), p17-32, 1982-11