College of Engineering and Technology Southwest University Chongqing 400715 China;
State Key Laboratory of Mechanical Transmission Chongqing University Chongqing 400044 China;
Department of Electrical and Computer Engineering Rowan University Glassboro NJ 08028 USA;
College of Engineering and Technology Southwest University Chongqing 400715 China;
College of Advanced Manufacturing Engineering Chongqing University of Posts and Telecommunications Chongqing 400065 China;
energy efficiency; cutting parameter; optimization; machining process;