Abstract: The NC machining is a widely used processing method in the mechanical manufacturing system. In order to realize the low carbon of the NC machining, the NC turning parameters optimization problem for high efficiency and low carbon is studied. The processing time objective function and carbon emissions objective function including electric power carbon emissions, cutting tool carbon emissions, cutting fluid carbon emissions are established. Considering the machine tool property and processing quality constraints, a multi-objective optimization model is established, which takes the NC machining cutting speed and feed as the variables, the minimum processing time and the lowest carbon emission as the optimization objectives. The weight coefficients are introduced to transform it into a single objective optimization model and the complex method is applied to solve it. An experiment case is performed to verify the effectiveness of the optimization model, and the machining parameters optimization results and the sensitivity of optimization variables are analyzed.

Key words: Complex method, Cutting parameters, High efficiency and low carbon, Multi-objective optimization, NC machining