负游隙四点接触球轴承的刚度计算

Stiffness Calculation of Four-Point Contact Ball Bearings with Negative Clearance

分析了负游隙四点接触球轴承分别承受纯径向和纯轴向载荷时的载荷分布,根据Hertz理论的载荷与变形关系,推导出了负游隙四点接触球轴承径向和轴向刚度的计算公式,以QJ1830轴承为例进行了分析计算,并对正、负游隙时轴承的刚度进行了对比,结果显示负游隙时轴承的径向和轴向刚度均得到提高。

The load distribution of four - point contact ball bearings with negative clearance under pure radial and axial load is respectively analyzed. The calculation formulas of radial and axial stiffness for the bearings are derived according to the relationship between load and deformation of Hertz theory. Taking the beating QJ1830 as an example, the stiff- ness is analyzed and calculated, and the stiffness of bearing with positive and negative clearance is compared. The re- suits show that the radial and axial stiffness of bearing with negative clearance are improved.