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VACUUM ›› 2025, Vol. 62 ›› Issue (6): 39-46.doi: 10.13385/j.cnki.vacuum.2025.06.06

• Vacuum Acquisition System • Previous Articles     Next Articles

Dynamic Balance Design Method for Variable Pitch Rotor Based on NSGA-II Algorithm

GAO Long, CHEN Tao, SONG Shuanjun, XU Tao   

  1. School of Mechanical and Electrical Engineering, Xi'an Polytechnic University, Xi'an 710600, China
  • Received:2024-12-11 Online:2025-11-25 Published:2025-11-27

Abstract: The dynamic balance design method for variable pitch rotor of dry screw vacuum pump was studied. Two kinds of five groups of weight loss holes were designed on the rotor tooth surface by mass division method. Combining with parametric modeling technology and NSGA-II algorithm, the optimal parameters and layout angles of weight loss holes were successfully obtained, so as to optimize the mass distribution. SolidWorks was used for 3D modeling, and its API interface was used for secondary development. Visual Studio was used to develop form programs to realize data interworking during modeling and optimization, as well as automatic updating of model parameters. The results show that the dynamic balancing performance of the rotor after weight reduction is significantly improved. The method simplifies the traditional dynamic balancing design process and realizes the automatic calculation of dynamic balancing, thus greatly improving the efficiency and accuracy of the design.

Key words: vacuum pump, variable pitch rotor, dynamic balance, NSGA-II algorithm

CLC Number:  TB752

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