高速精密切断法に関する研究(第1報) : 被削性に及ぼす切削速度の影響

概要

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Cutting-off of structural steel is investigated experimentally with the alloy tool steel circular saw at speeds from 4 500 m/min to 7 200 m/min in order to ascertain how machinability at high speeds differs from that at the conventional speeds in terms of cutting resistance, depth of cut, specific cutting resistance and cutting temperature, and thereby to provide basic data for more productive methods of fine cutting-off at high speeds. So as to ensure accurate experiments, the cross-section of the workpiece being cut is prepared such as the mean engage angle of the tool and the number of simultaneous cutting blades are kept invariable. The main conclusions are as follows : (1) The optimum mean engage angle exists to maximize the depth of cut. (2) The feed and depth of cut are in proportion to the feed force per blade, regardless . of the number of simultaneous cutting blades. (3) With the increase in the cutting speed, the depth of cut and cutting efficiency increase, whereas there is no remarkable increase in the cutting resistance, specific cutting resistance and cutting temperature. (4) The hardness of the workpiece has similar effects on machinability in the high speed cutting as in the conventional range of speeds. It follows from the above that increasing the cutting speed provides an effective method for high efficiency cutting.
社団法人精密工学会の論文
1984-03-05