Drilling Machine Simulator Considering Deflection of Drill

Abstract

Among various manual machine tool operations, it is known that the efficiency and accuracy of small-diameter deep-hole machining with a drilling machine is strongly dependent upon operator's sensitivity and skill learning level. In our previous work, a simulator of the drilling machine operation under no deflection of the drill was developed and its performance as a skill training apparatus was discussed. In this paper, the improvement of the simulator has been investigated. Firstly, the simulation model considering the deflection of the drill has been derived. Secondly, the model parameters have been reasonably identified from the experimental data of actual operation by applying the optimization technique due to genetic algorithm. In addition, the hardware system has been also improved to avoid reduction of realistic feeling which results from complicated calculation of the model.