Prediction and optimization of thrust force during the drilling of AISI 2080 steel

Abstract

Drilling is one of the critical processes in machining. High cutting forces that occur during drilling cause energy loss and wear of tools. Therefore, optimization of drilling parameters plays a significant role. The effects of drilling parameters on thrust force on AISI 2080 steel was investigated in this study. Drilling conditions were optimized to minimize the thrust force (Fz) by the Taguchi method. Experiments were conducted using two parameters (feed rate and cutting velocity) with three levels. A mathematical model for the Fz was obtained by the response surface methodology. The effect ratio of parameters on the results was determined by the analysis of variance. Optimum cutting parameters had been 30 m.min(-1) for cutting velocity and 0.05 mm.rev(-1) for feed rate. In addition, the results obtained according to the regression model generated and the results estimated by the Taguchi method were compared with the actual experimental results. Considering the error rates, it is observed that both methods were usable.