Energy-consumption-oriented cavity numerical control milling cutter combination optimization method

The invention is to solve the problem of high energy consumption and cost due to inappropriate selection of cutter combination in the 2.5 D cavity-type part milling, and discloses an energy-consumption-oriented cavity numerical control milling cutter combination optimization method. The method comprises the following steps: to begin with, systematically analyzing a mapping relation between the cutter combination and energy consumption in numerical control milling proves, revealing influence of the cutter diameter and cutter feasible region on milling energy consumption, and establishing a multi-cutter numerical control milling energy consumption function; based on this, establishing a numerical control milling cutter combination multi-objective optimization model with feasible cutters being optimization variables and energy consumption and cost being optimization objectives; providing a cutter combination optimization solution method, constructing a feasible cutter set, determining a feasible region of each cutter, and solving the optimization model through a digraph and a Dijkstra algorithm; and finally, carrying out cavity milling through the obtained optimum cutter combination.