Optimization of Process Parameters for CNC Turning of Hard Steel

The global environmental awareness is increased and environmental regulations become more stringent, the negative effects of cutting fluids on the environment are becoming more apparent. In CNC turning of hard materials such as steels, cast iron and super alloys, involves high cutting forces, leads to more power consumption and decreasing tool life which may increases the machining cost. To make machining process environment friendly with minimizing cost of machining, dry cutting is the best solution. Current research work presents optimization of Process parameters (cutting speed, feed rate and depth of cut) to minimize cutting forces for dry CNC turning of ASI 52100 steel using TiAlN coated tungsten carbide tool. Design of experiments is conducted using well known Taguchi’s L27 orthogonal array to collect cutting forces data. Optimization of process parameters for cutting forces is done using Taguchi Method in Minitab software. The significance of process parameters on responses is studied using developed model. The depth of cut is found to have more significance on cutting forces, followed by cutting speed.