Experimental Investigation of Machining Parameters of CNC Milling for Aluminum Alloys 6063 and A380

CNC Milling machine is a unique adaption when compared to the conventional milling machine which uses more number of different tools for the machining process. CNC Vertical Milling Machine is a widely accepted material removal machine used to manufacture the components with complicated shapes and profiles. During the CNC milling process, the material is removed by the end mill cutter. Input process parameters, were cutting speed, feed rate, and the depth of cut which are independent variables and Surface Roughness(SR) and Material Removal rate(MRR) are taken as dependent variables. The effects of various parameters of CNC milling process i.e, spindle speed, feed rate and depth of cut have been investigated to reveal their impact on surface roughness and MRR for machining of advanced materials. The machining of aluminium alloys on CNC milling with high speed is significant because such materials have diverse applications in many engineering applications. The experimentation work has been carried out on a FANUC controlled CNC vertical machining center (VMC). The experiments have been planned using Taguchi's experimental design technique. The machining parameters used are Depth of cut (dc), Spindle speed (N), and Feed rate (f). The effects of machining parameters on surface roughness and MRR are evaluated and the cutting conditions for minimizing the surface roughness and maximizing MRR are determined. This study aims to develop the mathematical equations of machining parameters like spindle speed, feed rate, depth of cut in CNC machine for machining of Aluminium alloys 6063 and A 380. An orthogonal array of L 27 was used for conducting the experiments to reduce the more number of experiments. The Regression analysis was done to predict the more significant machining parameters on performance characteristics i.e, Surface Roughness(SR) and Material Removal Rate (MRR).