工具従動型回転工具による旋削の研究 (第6報)

切削抵抗, 切削温度の予測

抄録

The cutting mechanisms of the self-propelled rotary cutting tool are equivalent to these of the tool with restricted tool-chip contact length in orthogonal cutting. Based on this result, the analytical predictions of the chip formation and cutting forces are carried out by use of the orthogonal cutting data. And, a thermal model that a finite cylinder rotates and the heat flows into the cylindrical body from a part of its end face is used in the theoretical analysis of the cutting temperature. These calculated values are good consistent with the experimental results. The chip formation of the rotary cutting tool is only determined by the relationship between the cutting ratio and the toolchip contact length without regard to the equilibrium of forces. The low cutting temperature is caused by the fact that the heat source area decreases with the tool-chip contact length and that the heat transfer rate and the heat source velocity increase with the tool revolution.