分别建立了方柱形、圆柱形和球形兜孔保持架的角接触球轴承动力学数值仿真模型，试验结果验证了模型的准确性。对三种不同兜孔形状的保持架在不同间隙比下进行了分析，结果表明：球形兜孔保持架运动稳定性显著优于方柱形和圆柱形兜孔保持架，而在间隙比小于1时，圆柱形兜孔保持架运动稳定性优于方形保持架，反之则方柱形保持架更稳定；球形兜孔保持架的运动由球引导，方柱形和圆柱形兜孔保持架则由套圈引导；随着间隙比的增大，保持架的轴向摆动范围逐渐增大，且方柱形、圆柱形和球形兜孔保持架的轴向摆动范围依次减小；保持架的磨损率与其运动稳定性呈负相关，且球形兜孔保持架的磨损率高于其他两种保持架。
Abstract
The dynamic numerical simulation models of angular contact ball bearings with square, round and spherical pocket cages are established, respectively. The accuracy of the model is verified by the experimental results. The cage dynamics with three different pocket shapes under different clearance ratios is analyzed. It is found that the movement stability of spherical pocket cages is significantly better than that of square and cylindrical pocket cages, and when the clearance ratio is less than 1, the movement stability of the cylindrical pocket cage is better than that of the square cage, on the contrary, the square cage is more stable. The movement range of the spherical pocket cage is determined by the pocket clearance, and the square and cylindrical pocket cages are determined by the guide clearance. With the increase of the clearance ratio, the axial swing range of the cage gradually increases. The axial swing range of the square, cylindrical and spherical pocket cages decreases successively. The wear rate of the cage is negatively correlate with its motion stability, and the wear rate of the spherical pocket cage is higher than the other two cages.
关键词
角接触球轴承 /
保持架 /
兜孔形状 /
动力学 /
稳定性 /
磨损
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Key words
angular contact ball bearing /
cage /
pocket shape /
dynamics /
stability /
wear
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