数控加工是一种广泛采用的机械制造加工方法，为实现数控加工的高能效，从数控铣削加工的低能耗少切削液两个方面对切削参数进行优化，建立切削加工过程能量消耗目标函数和切削液消耗目标函数。考虑加工过程中数控机床设备性能和加工质量的实际约束条件，建立以数控加工的切削速度和进给量以及切削液流速为优化变量，以最低加工能耗和最少切削液消耗为目标的多目标优化模型，并应用非支配排序遗传算法-II对优化模型进行优化求解。最后，通过某具体实例验证了所建模型的有效性。

The NC machining is a widely used processing method in the mechanical manufacturing system. In order to realize the high efficiency of the NC machining,the NC milling parameters optimization problem for low energy and minimum cutting fluid consumption is studied. The energy consumption objective function and cutting fluid consumption objective function 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 and cutting fluid flow as the variables,the lowest energy consumption and the minimum cutting fluid consumption as the optimization objectives and non-dominated sorting genetic algorithm-II (NSGA-II) algorithm is applied to solve it. An experiment case is performed to verify the effectiveness of the optimization model,and the machining parameters optimization results are analyzed.