Volume 39 Issue 6
Jun.  2024
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JI Ye, WANG Dongfeng, XUE Yujun, et al. Dynamic accuracy’s evolutionary regularity of angular contact ball bearing based on design parameters[J]. Journal of Aerospace Power, 2024, 39(6):20220389 doi: 10.13224/j.cnki.jasp.20220389
Citation: JI Ye, WANG Dongfeng, XUE Yujun, et al. Dynamic accuracy’s evolutionary regularity of angular contact ball bearing based on design parameters[J]. Journal of Aerospace Power, 2024, 39(6):20220389 doi: 10.13224/j.cnki.jasp.20220389

Dynamic accuracy’s evolutionary regularity of angular contact ball bearing based on design parameters

doi: 10.13224/j.cnki.jasp.20220389
  • Received Date: 2022-05-31
    Available Online: 2023-11-21
  • Discussions were performed to determine whether the accuracy of finished bearing could meet the design requirements, as the assembly and disassembly as inevitable processes not only consume working hours, but also may cause scratches on the rolling element and ring, resulting in the decline or even loss of product accuracy. According to the kinematic and geometric relationship of the angular contact ball bearing at condition in motion, based on the accuracy elements of parts, the analytical models of contact angle, radial runout and axial runout of inner ring of assembled bearing were established, the calculation method of dynamic accuracy was proposed, the variation trends of bearing accuracy in different processing stages were studied, and the relationship between groove curvature radius, groove bottom diameter, ball diameter and related accuracy elements and dynamic accuracy was systematically analyzed. The calculation results showed that the groove bottom diameter had a significant influence on the contact angle. In order to meet the design requirements, selection in groups was required after machining; When the error amplitude increased, the radial and axial runout increased almost linearly; The number of balls had little effect on the rotation accuracy, but it affected the stability of operation. The dynamic accuracy test data of the finished bearing were consistent with the calculation results, which indicated that the model was accurate and reasonable. Therefore, whether the dynamic accuracy meets the operation requirements can be obtained through the test of the parts’ design parameters. There is no need for the sleeve assembly and disassembly, which is conducive to improving the qualification rate and production efficiency.

     

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