Study the effect of Machining Parameter on Surface Roughness in Drilling of SG 500/7 Material
Keywords:
Optimization process, VMC Machine, Spheroidal Graphite material, various types of tools, Taguchi MethodAbstract
Drilling operation is widely used in the aerospace, aircraft and automotive industries, although modern metal
cutting methods have improved in the manufacturing industries, but drilling still remains one of the most common machining. In this study, focuses on the optimization of drilling parameters using the Taguchi technique to obtain minimum surface
roughness (Ra. A number of drilling experiments were conducted using the L9 orthogonal array on VMC machine. The experiments were performed on SG500/7 plate using different twist drills under dry cutting conditions. The measured results
were collected and analyzed with the help of the commercial software package MINITAB16. Analysis of variance (ANOVA)
was employed to determine the most significant control factors affecting the surface roughness. The spindle speed (850,
1150, & 1440 rpm), feed rate (90,120 &135 mm/min) and tool material (HSS, Carbide and TiAlN Coated Carbide) were
selected as control factors. The main and interaction effect of the input variables on the predicted responses are investigated. It is predicted that Taguchi method is a good method for optimization of various machining parameters as it reduces
number of experiments. The results indicate the optimum values of the input factors and the results are conformed by a confirmatory test.
