自润滑关节轴承冷缩装配研究与应用

Research and Application of Cold Shrinkage Assembly of Self-Lubricating Joint Bearing

受操作空间影响,某型号机型垂尾关节轴承与轴承座之间须采用徒手装配的方式。针对该轴承装配过程中易造成卡滞的问题,结合自润滑关节轴承的装配间隙及装配时间要求,基于ABAQUS软件仿真分析了温度场变化对自润滑关节轴承变形的具体影响规律,针对轴承冷缩装配时的轴承温度提出了具体的要求;并通过试验监测了冷缩轴承在20℃装配环境中轴承温度随时间的变化曲线。结果表明,轴承的冷缩温度低于-2℃时能够满足装配需求。依据有限元仿真分析和试验结果,将轴承冷缩装配方法成功应用于该机型,解决了该机型自润滑关节轴承的卡滞问题,且可在其他机型进行推广应用。

Affected by the operation space, a certain type of model of the vertical joint bearing and the bearing housing must be assembled by hand. It is easy to cause the stuck problem in the assembly process of the bearing. Combining with the assembly clearance and assembly time requirements of the self-lubricating joint bearing, the specific influence law of temperature field change on the deformation of self-lubricating joint bearing is analyzed based on ABAQUS simulation. The specific requirements for the bearing temperature during the cold shrink assembly of the bearing are put forward. The curve of the bearing temperature with time in 20℃ assembly environment is monitored by experiments. The results show that the cold shrinkage temperature of the bearing is lower than –2℃, which meet the assembly needs. According to the finite element simulation analysis and experimental results, the bearing cold shrinkage assembly method was successfully applied to the model, which solved the stuck problem of the self-lubricating joint bearing of the model, and can be popularized and applied in other models.