Multi-objective parameter optimization of multi-pass CNC machining

In a multi-pass milling process, energy consumption is highly dependent of the choice of cutting parameters for each pass and the total number of passes. This paper first analyzes the energy consumption of multi-pass CNC milling, based on which a multi-objective optimization model is proposed to maximize energy efficiency and minimize production cost. A case study is then carried out to explore the difference of the proposed multi-objective optimization and mono-objective ones (i.e., either maximum energy efficiency or minimum cost).