This paper deals with the method to minimize the total machining time of drilling multiple holes by determining the cutting condition considering both the cutting torque and the tool life. Based on the ACC (Adaptive Control Constraint) system that controls the cutting torque, the proposed method controls the life by determining the cutting conditions according to the "machining control plan". Among several machining control plans, the plan that maintains tool wear progress rate is found to be effective through the simulation. The proposed method is installed to a CNC machine tool, and its performance is verified by cutting tests. The results show that the proposed method reduces the cutting time by 7-13% compared to the conventional control methods.