Volume 40 Issue 7
Jul.  2025
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LOU Zhixu, QIU Ming, ZHOU Caihong, et al. Structural optimization of high-speed needle roller bearing cage with V-shaped pocket[J]. Journal of Aerospace Power, 2025, 40(7):20240220 doi: 10.13224/j.cnki.jasp.20240220
Citation: LOU Zhixu, QIU Ming, ZHOU Caihong, et al. Structural optimization of high-speed needle roller bearing cage with V-shaped pocket[J]. Journal of Aerospace Power, 2025, 40(7):20240220 doi: 10.13224/j.cnki.jasp.20240220

Structural optimization of high-speed needle roller bearing cage with V-shaped pocket

doi: 10.13224/j.cnki.jasp.20240220
  • Received Date: 2024-04-12
    Available Online: 2024-10-08
  • To address the problem of poor stability in the cage of needle roller bearings under high-speed working conditions, the HK0608 needle roller bearing was taken as the research object, and a bearing dynamics analysis model was established based on multi-body dynamics analysis software. Meanwhile, the deviation ratio of the cage center of mass vortex radius and the cage slip rate were selected as optimization objectives, and the structure of the bearing was optimized by using orthogonal experimental method, multiple regression, principal component analysis method and non-dominated sorting genetic algorithm Ⅱ (NSGA-Ⅱ) multi-objective optimization genetic algorithm. The results showed that the rotational speed had the greatest impact on the deviation ratio of the center of mass vortex radius, and the radial load had the greatest impact on the slip rate of the cage; when the radial load was 1084 N, the rotational speed was 21036 r/min, and the wall inclination angle was 5.8°, the stability of the retainer was the best. At the same time, the stability of the cage under different rotational speeds and radial loads before and after optimization was compared and analyzed. It was found that the stability of the two cages first increased and then decreased with the increase of rotational speed and radial load, and the stability of the cage of the optimized bearing was improved. The outcomes of the research can serve as a guide for designing the structure of needle roller bearings under high-speed working conditions.

     

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