고속도강 드릴 가공에서의 플랭크 마모가 공구수명에 미치는 영향에 관한 연구 = A Study on Effect of Tool Life by Flank Wear in HㆍSㆍS Drilling Operation

다국어 초록 (Multilingual Abstract)

For tool wear sensing to predict tool life, in the drilling of steel(SM45C) using H·S·S drills of 10.4mm dia. at V=22.5m/min(690rpm), f=0.1mm/rev, the results obtained are as follows ;
1) High-speed steel drill life is found to be a strong function of the work material hardness(T??αH??) when drillin steel(SM45C).
2) It would be advisable to predetermine the tool life criteria when theaverage flank wear is reached the region where flank wear occurrs at agradually increasing rate(V??≒0.10mm).
3) Using orthogonal cutting model, equations to calculate torque(M) and thrust(T) generated during a drilling operation with gradual tool wear are obtained.
M=0.125 H??·d²·f + 0.047 H??·d²·ωf + 0.3925 H??·d²·r
T= 0.3214 H??·d·f + 0.0972 H??·d·ωf + 0.9158 H??·d·r