Ti-6Al-6V-2Snの切削加工能率の向上に関する研究(第3報) : 切削機構のシミュレーション解析

概要

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Simulation analysis based on the empirical flow stress, friction and wear characteristic equations of Ti-6Al-6V-2Sn titanium alloy has been conducted to clarify the effects of cutting speed and feed upon the cutting mechanism. Due to both strong temperature dependence on flow stress and high friction on the rake face, the chip contact length shortens with increasing cutting speed. As a result, the heavy mechanical and thermal loads act on the tool tip, causing the severe wear to take place. By increasing feed and decreasing cutting speed, however, the chip contact length is widened and the concentration of the tool tip loads is relieved, which leads to the reduction of the wear. The simulation based on a wear characteristic equation reveals the above-mentioned mechanism, giving a physical meaning of the improvements in tool wear and cutting efficiency.
公益社団法人精密工学会の論文
1993-07-05