ホーニング加工の高能率化(第2報):炭素鋼ホーニング加工の高速度化が切削性能と仕上面性状に及ぼす影響

概要

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Increase of cutting speed will be one of the most easily applicable means to perform a high productive honing. In this report, effects of increased cutting speed in steel honing are investigated on finishing performances and residual stress on finishing surface. Work material used is the 0.45% plain carbon steel bars heat-treated into three grades of hardness. When high cutting speed of 150 m/min, almost the same finishing performances includng shape accuracy can be obtained as in usual speed, but the stick behaves harder in keeping with increase of critical pressure and decrease of stick wear. However, over a limited range of middle cutting speed, finishing performances deteriorate extremely and its state comes worse with decrease of hardness of work material. This deterioration may be attributable to the welding of chip. And, the X-ray diffraction analysis on finishing surface layer shows there exists a compressive residual stress caused by dominant burnishing of cutting grains and its magnitude is little influenced by increased cutting speed and depends on the cutting direction of grains.
公益社団法人精密工学会の論文