Prediction of MRR for VMC Five Axis Machining of D3 Steel Using Desirability Function Approach Arun Patil 1(&) and Ramesh Rudrapati 2 1 Department of Mechanical Engineering, JJT University, Churela, Rajastan, India patil.mailme@gmail.com 2 Department of Mechanical Engineering, Hawassa University, Hawassa, Ethiopia rameshrudrapati@gmail.com Abstract. The optimum selection of machining parameters plays a important role to achieve the desired performance of the machining process at a low cost within short time. Aim of the present research investigation is to develop a mathematical model for predicting material removal rate (MRR) in terms of speed, feed and depth of cut. Experiment are conducted on D3 tool steel material in VMC five axis operation based on the full factorial design. A second order mathematical model in terms of machining parameters and MRR is developed by response surface methodology (RSM). Analysis of variance (ANOVA) technique is utilized to determine the significant process parameters which expected to influence MRR. Contour plots are developed by RSM approach from the mathematical model to study the interaction effects of machining parameters on MRR. Desirability function approach has been applied to solve the mathematical model of MRR to maximize it. Keywords: Five axis VMC Á RSM Á DFA Á D3 steel Á MRR 1 Introduction The selection of optimum input process parameters is of great concern for metal cutting industries to produce high quality products to meet the current growing trend of advanced industrial applications. Identification of optimal cutting parameters like number of passes, feed rate, depth of cut and cutting speed is considered as a crucial for obtaining better qualities on machined part in turning, drilling, milling, etc. Vertical milling center (VMC) with five-axis is one of the important advanced manufacturing processes which used to create complex features on parts with one setup by the simultaneous interpolation of a machine with five degrees of freedom [1]. Conduct- ing VMC five axis machining and producing dimensionally accurate milled parts are dif ficult task. To conduct VMC five axis machining process economically high material removal rate (MRR) and predictably to produce of parts with high surface quality is important area of research. © Springer Nature Singapore Pte Ltd. 2020 V. K. Gunjan et al. (Eds.): ICRRM 2019 – System Reliability, Quality Control, Safety, Maintenance and Management, pp. 127–132, 2020. https://doi.org/10.1007/978-981-13-8507-0_20