Study on Scattering in Flank Wear of Cutting Tools (1ｓｔ Report) -Mechanical Impact Fatigue Deterioration of Wear Surface and its Modeling-

摘要

This paper investigates the effects of tool vibration and wear surface deterioration on scattering in flank wear of cutting tools. An hypothesis for explaining variations in the wear rate experienced in the actual turning is proposed, in which the scatter is mainly caused by changes of stress and temperature along the wear land and by fatigue deterioration of the wear surface. Variations in the wear rate are also induced by vibration between the tool and the work material, including cases in which the wear surface completely separates from the machined surface. Numerical analysis and a special mechanical impact fatigue experiment partially prove that the hypothesis, in conjunction with a wear characteristic equation proposed elsewhere (Reference (4)), holds qualitatively, although a thermal fatigue experiment is to be performed.