摩耗面積を有する単粒工具の電解単粒切削に関する研究

概要

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Electrolytic single diamond cutting are performed to make clear the grinding mechanism of the electromechanical grinding at high work feed rate. Single diamond tools with any wear flat area are used to simulate the wear of abrasive grains on peripheral surface area of the grinding wheel. Effects of electrolytic action on frictional components in single diamond cutting forces are investigated with reference to proposed empirical cutting force equations. Summary of results are shown below. (1) Cutting forces in a single diamond cutting with any wear flat area are confirmed experimentally to consist of three components : cutting force, ploughing force and frictional or sliding force. Frictional components contains three important factors, namely compressive yield stress Kn, friction coefficient μ and wear flat area. (2) Frictional components decrease by electrolytic action, which are mainly induced by the reduction of compressive yield stress. Friction coefficient are held constant even by the applied electrolytic action. (3) Sudden stop equipment shows the preferential dissolution of hardened second phase particles in Al-Si-Cu alloy and alloy tool steel SKD11. Preferential dissolution may cause the reduction of the compressive yield stress of workpiece and/or contact pressure between workpiece and grinding wheel.
公益社団法人精密工学会の論文
1990-01-05