Analysis of Thrust Force in Drilling of Titanium Alloy Using Taguchi's Method

Abstract

Achieving good quality of hole by drilling is extremely difficult in hard-to-difficult cut material such as titanium alloys and nickel alloys. Hence, numerous investigations have been organized using these alloys by the researchers in the past decades. Thrust force is the main factor associated in drilling that affects the final quality of the hole. Minimizing thrust force in drilling is still questionable and extremely difficult. Therefore, considering as an objective function of the present investigation, thrust force is significant factor to be minimized. Based on the thorough literature survey, it is identified that spindle speed, feed rate, and point angle are the significant factors inducing thrust force during drilling. Identifying appropriate levels of each input factors can minimize the thrust force. Therefore, Taguchi's method is applied to identify the optimal input process factors to minimize the thrust force during drilling of titanium alloys. The results show increasing feed rate subsequently increases the thrust force of the drilling. However, from the analysis results, it is observed that, the point angle of the drill tool is factor advances thrust force during drilling when comparing feed rate.