快削鋼の被削性解析(第2報) : 快削添加物の形状と種類が切削機構に及ぼす影響

概要

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Flow properties and friction characteristics have been measured on various steels : a plain carbon steel, resulphurized steels with different size of MnS particles and leaded resulphurized steel. On the basis of the empirical equations, a simulation analysis has been conducted to examine effects of the free-machining additives on the cutting mechanism. At a relatively low speed of 100 m/min, the leaded resulphurized steel followed by the resulphurized steel with smaller MnS inclusions shows the best machinability, such as decreases in chip thickness, cutting forces and tool temperature, which are diminished with increasing cutting speed. These changes mainly arise from the difference in friction characteristics since the flow properties are almost the same among the four steels. The simulation results are found to be in good accordance with experiments.
公益社団法人精密工学会の論文
1991-12-05