低噪音深沟球轴承振动特性研究  

Vibration characteristics of low-noise deep groove ball bearings

作　　者：邓四二[1] 孙朝阳[2] 顾金芳 崔永存[1] 

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]洛阳轴研科技股份有限公司,河南洛阳471039 [3]上海天安轴承有限公司,上海201108

出　　处：《振动与冲击》2015年第10期12-19,共8页Journal of Vibration and Shock

基　　金：国家十二五科技攻关项目(JPPT-ZCGX1-1);河南省科技创新杰出人才(144200510020)

摘　　要：在滚动轴承动力学分析理论基础上建立含轴承零件工作表面波纹度的深沟球轴承动力学数学模型,并以某型号低噪音深沟球轴承为例,对不同结构参数、工况参数及谐波参数下低噪音深沟球轴承的振动特性进行理论分析。结果表明,合理选取径向游隙、内外沟曲率半径系数及保持架兜孔间隙等参数能使轴承本身达到减振降噪目的;振动值随轴承宽度增加逐渐减小;施加一定轴向载荷能有效降低轴承振动;存在的合理转速使用范围能有效降低轴承振动;内外滚道谐波阶次等于钢球数目整数倍时,轴承振动明显加剧;外滚道激励谐波对应的激励频率为kzfc,内滚道激励谐波对应的激励频率为kzfc+fs;偶次谐波阶次钢球表面波纹度对轴承振动有激励作用;轴承旋转套圈会激励更大的轴承振动值;瞬时载荷增加或瞬时速度提高均会致轴承振动增大。Based on the dynamic analysis theory of rolling bearings, a dynamic model for deep groove ball bearings considering the effects of bearing components＇ working surface waviness was established. Taking a type of low-noise deep groove ball bearing as an example, the bearing vibration characteristics were analyzed theoretically with various bearing structural parameters, working conditions and working surface wavinesses. The results showed that the bearing basic vibration can be reduced by selecting reasonable primary parameters, for instance, bearing radial clearance, inner and outer raceway groove curvature radius coefficients, pocket clearance of cage, and so on ; the larger the bearing width, the smaller the bearing vibration; a certain axial loads can reduce effectively the bearing vibration; there is a reasonable rotating speed range for smaller bearing vibration; the severe vibration occurs when the inner and outer raceway surface waviness orders are an integer multiple of the number of balls ; the exciting frequency corresponding the waviness orders of outer raceway is kzfc and that of the inner raceway is kzfc ＋fs; the even waviness orders of ball working surface has an exciting effect on the bearing vibration; the vibration produced by rotating ring is more severe than that of fixed ring; the bearing vibration increases greatly with increase in radial loads or rotating speed.

关 键 词：深沟球轴承 低噪音 表面波纹度 振动 

分 类 号：TH113[机械工程—机械设计及理论]