高速角接触球轴承套圈倾斜角允许范围的定量研究

高速角接触球轴承由于存在加工和装配误差，内外套圈之间总是不同程度地存在着倾斜。当倾斜超过一定限度时，轴承的精度、刚度、温升和寿命会受到严重影响。针对现有的关于轴承套圈倾斜问题的研究未考虑高速离心效应及润滑的影响，难以准确反映高速轴承套圈倾斜角允许范围的不足，建立一种综合考虑套圈倾斜、高速离心效应和润滑影响的轴承动态特性分析模型，开发角接触球轴承复合工况下动态性能分析软件。典型算例计算表明：所编制的软件在不考虑高速离心效应和润滑影响时的计算结果与SKF公司TABACY软件的计算结果一致，而考虑高速离心效应和润滑影响后的计算分析更为合理。在此基础上，进一步考虑高速离心效应和润滑的影响，定量研究套圈倾斜角对高速角接触球轴承动态特性的影响规律，并从保障轴承寿命的角度提出套圈倾斜角的允许范围。

Quantitative Research on the Permissible Tilt Angle of High-speed Angular Contact Ball Bearings

The tilt between inner rings and outer rings of high-speed angular contact ball bearings is always existed to some extent because of manufacturing and assembly errors. When a certain limit value of the tilt is exceeded, their accuracy, stiffness, temperature rise and life can be severely affected. The permissible tilt angle cannot be reflected accurately by current methods because centrifugal effects and lubrication film effects are ignored. An analytical model is established to calculate bearing dynamic characteristics in which tilt, centrifugal effect and lubrication are taken into account. The corresponding software is developed. A typical example is analyzed by the developed software and SKF TABACY. They are in good agreement when centrifugal effects and lubrication are not considered. However, it is more reasonable for analyzing centrifugal and lubrication effects. The influence of ring tilt angle on bearing dynamic characteristics is further studied with consideration of centrifugal effect and lubrication. The permissible tilt angle is proposed to guarantee bearing life.