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In modern automotive industries, technology is advancing. Industries needs lower-cost operations with less production time and better surface properties to maintain competitiveness. For that attempts have been made by researchers to predict process parameters for achieving optimum surface quality. Aluminium alloys (Al 6063) are widely used in the industrial application. It has applications in the field of automotive structures owing to its excellent strength, aesthetics, and availability. With its widespread use it is important to understand its machining properties which is the motive of this research work. This research work reports the significance of influence of speed (s), feed (f), depth of cut (d) and nose radius (r) of the cutting tool on the Material removal rate (MRR) and Surface roughness (SR) of the Al 6063 aluminium. Cemented carbide tool inserts were used to machine the Al 6063.