The Application of Taguchi Method in Drilling Process for Optimization of Multi Response Problem

Abstract

In this study, the effect of cutting parameters on the various performance characteristics in the drilling process (hole enlargement) of AA 5754 Aluminium alloy were experimentally investigated. Rotational speed, feed and depth of cut were considered as control factors, arithmetic average roughness, material removal rate and machining time were considered as response factors. Experiments were designed according to Taguchi L9 orthogonal array. Multi-response signal to noise ratio was calculated for the response variables simultaneously. Analysis of variance was performed to find out the effective cutting parameters on the surface roughnes, material removal rate and machining time. Furthermore, confirmation test was conducted for the obtained optimum combination level of factors. The obtained results indicate that the rotational speed was found to be the dominant factor among controllable factors, followed by the feed and the depth of cut. Optimal performance parameters were obtained 2000 rpm rotational speed, 0.10 mm/rev feed and 0.75 mm depth of cut by using multi-objective Taguchi approach.

Keywords: Drilling, Material removal rate, Machining time, Optimization, Surface roughness, Taguchi