传动机构用四点角接触球轴承的改进设计  

Improvement on Design of Four Point Contacts Ball Bearing Used in Transmission Mechanism

作　　者：马美玲[1] 建雪丽[1] 倪受俊[2] 

机构地区：[1]洛阳轴承研究所,河南洛阳471039 [2]洛阳轴承集团有限公司,河南洛阳471039

出　　处：《轴承》2005年第3期1-3,共3页Bearing

摘　　要：某型号主机配套使用的四点角接触球轴承承受大的径向力和倾覆力矩 ,原来的结构不能满足主机的工况要求。通过减小接触角、增大钢球直径和采用满球设计提高其承载能力 ;用桃形沟道代替直沟道以减小接触应力 ;装配时将两半内圈压紧达到预定游隙以提高系统刚度等措施使轴承的最大接触应力降低至不足原结构的 1 3,摩擦力矩为原结构的 1 5。The four pointcontact ball bearing used on some main machine must endure large radial force and upsetting moment,the former bearing structure can not meet the demand.The bearing capacity is increased by reducing contact angle and increasing steel ball diameter and adopting full complement ball design. The contact stress is reduced by using peach shape groove raceway to replace the straight groove raceway.When assembled,two piece of inner rings are pressed to reach pre-clearance,which increase the system rigidity.Comparing with the original structure,the maximum contact stress is about 1/3 of that of original structure and friction moment is about 1/5 of original structure.

关 键 词：角接触球轴承 结构 性能 改进 

分 类 号：TH133.33[机械工程—机械制造及自动化]