Chip의 現狀과 切削速度에 關한 硏究 = Study on the Shape of Chip and Cutting Velocity

다국어 초록 (Multilingual Abstract)

F.W. Taylor, Dr. Max Kronenberg and etc. studied on the metal cutting by the bite; but the results have not been very much helpful for the practical application because the factors which influence the metal cutting simultaneously were treated individually.
In this study the relation of the chip sectional area, tool-life and cutting velocity has been examined. As the testing apparatus the lathe "WACHEON MODEL WHPL-380" attached by the material was mild steel the size of which was 40㎜∅×600㎜ and the chemical composition of bite W(18%)-Cr(4%)-V(1%). The tool life was determined by the Schlesinger's law.
When the cutting velocity was 80m/min and the chip sectional area varied from 0.05㎜ to 0.0420㎜, the tool life was propotional to the chip sectional area and began to decrease from the point of 0.105㎜. When the cutting velocity was 80m/min, the chip sectional area 0.005㎜ and the depth varied ; the tool life increased as the increment of the cutting depth. As the cutting depth was deeper until 0.70㎜, the tool life was longer ; and shorter again, where the cutting' velocity and chip sectional area(80m/min, 0.105㎜) were constant. When the cutting depth varied from 1.00㎜ to 2.50㎜, where the cutting velocity and chip sectional area were constant as 80m/min and 0.42㎜, the tool life increased little by little.