In this study, CNC turning process parameters are optimized while
machining AA6061 – T6 alloy. The process variables, namely, cutting spindle speed or
spindle velocity (Cs), rate of feed (Fr), rate of the depth of cut (Dc), and nose radius
(Nr), were optimized with output responses such as surface roughness (Ra), feed power
(Fx), thrust power (Fy), cutting power (Fz), and removal rate of material (MRR). The
optimized results showed higher MRR, Fy, and Fz and lower Fx and Ra were obtained
at a cutting spindle speed or spindle velocity (Cs) of 100 rev/min, rate of feed (Fr) of
0.2 mm/min, depth of cut (Dc) of 1.5 mm/min, and nose radius (Nr) of 0.8 mm.
TOPSIS and ANOVA were used to assess the experimental results to determine the
most favourable factors that were superior and suitable for selecting the optimal
variable condition.
Keywords: AA6061-T6 alloy, ANOVA, CNC Turning, Cutting power, Depth of the cut, Feed power, Material removal rate, Multiresponse Optimization, Nose radius, Rate of feed, Spindle Speed, Surface roughness, Thrust power, TOPSIS.
