Abstract: Aiming at the problems of a multiobjective optimization design of a five-axis machine tool turntable transmission system for an aero-engine blade turntable, the objective function was established by the total gear volume and total coincidence of the five-axis machine tool turntable, an optimized mathematical model was established under the constraints of contact stress and bended stress of the gear. A GAPSO method combined the advantages of PSO algorithm and GA algorithm were proposed. The GAPSO algorithm which has both the powerful global search ability of GA algorithm and the fast convergence ability of PSO algorithm were used to solve the multi-objective optimization mathematical model of turntable gear transmission system. The PSO algorithm and GA algorithm were used to optimize the mathematical model, and the results of the three algorithms were compared. The results indicate that compared with the PSO algorithm and the GA algorithm, the optimization effect of the GAPSO algorithm is the best. The volume of the gear transmission system of the turntable is reduced by 27.26%, and the coincidence degree is increased by 8.10%. The optimization goal achieves the purpose of reducing the weight of the turntable and improving the smoothness of the transmission. The multi-objective optimization design of the gear transmission system provides a theoretical basis.
Key words: five-axis machine tool; GAPSO algorithm; turntable; gear transmission system; multi-objective optimization