半球型动压气体轴承关键尺寸影响分析  

Analysis of the Effects of Critical Dimension About Hemisphere-Type Hydrodynamic Gas-Lubricated Bearings

作　　者：闫亚超 王建青 党建军 张海雄 YAN Yachao;WANG Jianqing;DANG Jianjun;ZHANG Haixiong(Xi’an Aerospace Precision Electromechanical Institute,Xi’an 710100,China)

机构地区：[1]西安航天精密机电研究所,西安710100

出　　处：《微特电机》2023年第4期15-19,共5页Small & Special Electrical Machines

摘　　要：在雷诺方程和惠普尔平行槽对称压力分布理论的基础上,建立半球型动压轴承的分析模型。以某型号高精度三浮陀螺用半球型动压轴承结构参数特征为例,通过改变半球轴承结构参数,分析了输出指标的变化规律。结果显示,轴承半径与输出指标呈线性变化规律,轴承螺旋槽结构参数与轴承的力学性能呈非线性关系,轴承间隙对轴承的刚度特性呈幂指数关系。计算结果与测试结果进行了对比,其误差在20%以内。Based on the Reynolds equation and the symmetric pressure distribution theory of Whipple parallel groove,the analytical model of hemispherical hydrodynamic bearings was established.The structural parameter characteristics of a hemispherical dynamic pressure bearing used in a high-precision three-float gyro were taken as an example,the changes of output parameters were analyzed by adjusting the structural parameters of the hemispherical bearing.The results show that spiral groove have a nonlinear relationship with the mechanical properties of bearing,and the clearance has a power exponential image on the bearing stiffness.The calculated results were compared with the experiment ones,the error was within 20%.

关 键 词：半球型轴承 气体轴承 关键尺寸 

分 类 号：TM38[电气工程—电机]