Torque and cutting force prediction model by using response surface method

This paper describes the development of response models (cutting force, and torque) for milling 618 stainless steel utilizing response surface methods. Both models are developed in terms of cutting speed, feed rate, axial depth and radial depth. The cutting force and torque contours have been generated from these model equations and are shown on different plots. The models generated show that the cutting force reaches the maximum value when cutting speed decreased and feed rate, axial depth and radial depth are increased. The torque reaches the maximum value when cutting speed decreased and feed rate, axial depth and radial depth are increased. A plot which shows the relationship between the torque and cutting speed has been developed. From the plot, the cutting forces reach the highest value when the torque increased. The second order is more accurate based on the variance analysis and the predicted value is closer to the experimental result.