混合陶瓷球轴承的选型研究  

Selection of the Hybrid Ceramic Ball Bearings

作　　者：蒋喜[1] 刘宏昭[1] 

机构地区：[1]西安理工大学机械与精密仪器工程学院,陕西西安710048

出　　处：《西安理工大学学报》2012年第1期33-38,共6页Journal of Xi'an University of Technology

基　　金：国家科技重大专项计划基金资助项目(2010ZX04014-012);陕西省重点学科建设专项资金资助项目

摘　　要：混合陶瓷球轴承是支承高速电主轴的主要轴承类型之一,其运转状况直接影响到电主轴的可靠性,为此必须选择合适的混合陶瓷球轴承。系统地阐述了混合陶瓷球轴承的选型依据,包括类型选择、尺寸选择以及对极限转速的验算等,其中重点推导了混合陶瓷球轴承中的陶瓷球及轴承外圈的寿命估算公式及其在不同可靠度要求下寿命修正系数的计算式,进而得到陶瓷球及轴承外圈的基本额定动载荷,提出所选取的陶瓷球轴承需符合的要求。Hybrid ceramic ball bearing is one of the main bearings which are used to support the high-speed motorized spindle,the operation condition of which may affect the reliability of the motorized spindle directly.Therefore,it is necessary to choose the appropriate hybrid ceramic ball bearing.This paper elaborates the basis of the hybrid ceramic ball bearing＇s selection,including how to choose the type and size,and the validation for limit speed,mainly derives the estimation formula of ceramic ball and outer ring＇s lifetime of hybrid ceramic ball bearing,and the formula of its lifetime correction coefficient under different reliability requirements.And then get the basic rated dynamic load of ceramic ball and outer ring,put forward the requirements which the selected ceramic ball bearing should accord with.

关 键 词：混合陶瓷球轴承 电主轴 选型 寿命 

分 类 号：TH133.3[机械工程—机械制造及自动化]