Optimization of cutting parameters in double-excitation ultrasonic elliptical vibration cutting of 630 stainless steel

An optimization method for parameters of 630 stainless steel via ultrasonic elliptical vibration cutting is proposed to solve problems of serious work hardening and susceptibility to build up during processing. AdvantEdge software is used for finite element simulation of the machining process. Influence of cutting speed, feed rate, and back-cutting amount on cutting force and temperature is analyzed. The dynamic model of cutting force and temperature is established, and fit of the prediction model is tested using analysis of variance. Finally, optimal cutting parameter plan for 630 stainless steel is fitted to minimize the cutting force and temperature during the machining process, and the model is verified and optimized through experiments. Both simulation and experimental results showed that elliptical vibration cutting can significantly reduce the cutting force and temperature in the machining of 630 stainless steel. The optimal combination of machining parameters is (v, f, ap) = (13.07, 0.1, 1).