高速断続切削時の工具摩耗と切削温度 [in Japanese] Tool Wear and Cutting Temperature in High Speed Interrupted Machining [in Japanese]
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本研究では, 炭素鋼S45Cを切削速度269～2089m/minの範囲で正面フライス切削し, 高速断続切削した場合の切削温度と工具摩耗の特徴を, 切削速度およびカッタ1回転中の実切削時間などの観点から調査した. その結果, 高速域ではある切削速度から連続切削よりも断続切削の方が摩耗進行が遅くなること, また実験式による高速断続切削時の切削温度を検討した結果, 実切削時間が短い条件下では切削速度の上昇に伴ってある切削速度で最大ピークを持つことがわかった.
This research aims to clarify the cutting phenomenon at the high-speed interrupted cutting while paying attention to the cutting temperature. Carbon steel S45C was machined in the face milling within the range in cutting speed 269-2089m/min. The cutting temperatures and the tool wear characteristics, when the high-speed interrupted cutting was done, were investigated from the viewpoints of the cutting speed and the real cutting time in one rotation. The cutting temperature was measured by using the tool-work thermocouple method. As the results, in low cutting speed, the wear progress rate of the interrupted cutting was higher than that of the continuous cutting, but the wear progress rate of the interrupted cutting lowered oppositely in the high cutting speed range. And, the cutting temperature had the maximum peak at a certain cutting speed for the increase of the cutting speed under the cutting condition that the cutting time shortened very much, and the maximum peak shifted to the low cutting speed side as the width of the work material became small. It was understood that there was a possibility of decreasing the cutting temperature in high-speed interrupted cutting.