In allusion to the default that the bearing life is shorten during using , it is specially researched to the bearing life calculation theory and the method which is to increase the bearing life 并针对碾米机在使用过程中主轴轴承寿命的离散性，分析了影响轴承寿命的因素。同时，利用动平衡解耦原理对碾米机主轴的去重积进行理论分析和计算。
We researched the peculiarity of the small and no loss in efficacy sample book , and established the reliability test method , advanced a check plan for reliability test meeting a specified reliability requirement of the main shaft bearings 研究了小子样、无失效数据的特点，建立了主轴轴承可靠性试验评估方法，提出了满足一定可靠度要求的可靠性试验方案。
Report back in the exhibit schedule : march 8 , 2006 - 10 days am09 : march 10 , 2006 - 12 days remove time : march 12 , 2006 exhibitors range : car , car , motorcycle , light truck bearings , railway bearings , magnetic bearing spindle ; aviation aerospace marine bearings , rocket and satellite bearings ; industrial robot bearings , machining center and machine spindle bearings , textile machine bearings , motor bearings , and farm machinery bearings , paper machine bearings , bearings press , bearing mill , metallurgical mining , petrochemical machinery bearings , bearings sporting goods , marine rig bearing ; bearings , bearings gyroscope , high - precision bearings , high - speed bearings , linear motion bearings , needle roller bearings , thrust bearings , ultra - low - temperature bearings , special bearings , ceramic ball bearings , spherical with trophies bearing miniature bearings , quiet motor bearings , ball bearings , roller bearings , lubricating bearings corrosion resistant bearings , bearing joints ; bearing ring blank refinement , precision ball and roller crown , with nails cage 撤展时间： 2006年03月12日参展范围：轿车汽车摩托车轻型车轴承铁路轴承磁悬浮轴承电主轴航空航天航海轴承火箭及人造卫星轴承工业机器人轴承加工中心及机床主轴轴承纺织机轴承电机轴承农机轴承造纸机轴承印刷机轴承轧机轴承冶金矿山石油化工机械轴承体育用品轴承海洋钻机轴承组合轴承陀螺仪轴承高精轴承高速轴承直线运动轴承滚针轴承推力轴承超低温轴承特种专用轴承陶瓷球轴承带座外球面轴承微型轴承静音电机轴承球轴承滚子轴承润滑轴承耐腐蚀轴承关节轴承轴承套圈精化毛坯精密钢球凸度滚子带钉保持架轴承滚动体等轴承部件。
Firstly , finite element model of lathe spindle using finite element technique is established , and supporting bearings are treated as springs , unknown physical parameters and partial vibration displacement make up of new solving vector through using method of combination of academic modeling and experiment , mathematic model of solving stiffness of beating of lathe spindle is established using inverse analysis method of response problem finally 建立了机床主轴的有限元模型，将支承轴承简化为支承弹簧，通过理论建模与实验相结合的办法，将待识别的物理参数和部分振动位移组成新的求解向量，利用响应问题的逆分析方法建立了求解主轴轴承刚度的数学模型。
The analysis of dynamics characteristic of shaft rotor in high spindles is one of the important contents that directly decide the designing function of shaft . the dynamic characteristics have immediate effect on the manufacturing precision and efficiency , the lives of bearings , as well as working of the key components 高速轴系的转子动力学性能的分析设计是直接决定主轴性能设计的一项重要内容，主轴的转子动力学特性对机床的加工精度和效率、主轴轴承的寿命和其它关键部件的正常工作等方面都有着至关重要的影响。
On the basic theory of transfer heat , tribology of rolling bearings and rotor dynamics , taking gdz48a electrospindle as an example , the paper puts forward the spindle bearing ' s quasi - dynamics analysis model with the influences of the friction heat and preloadings analyzes the friction moment , velocities , contact loads , friction heat and stiffness and studies the influences of the friction heat , structure and application parameters on the speed and dynamics 本文以传热学、滚动轴承摩擦学和转子动力学为理论基础，以gdz48a型电主轴为例，建立了考虑摩擦热和预紧方式影响的主轴轴承拟动力学分析模型，分析了轴承的摩擦力矩、运动、载荷和刚度，研究了轴承的热特性、设计和应用参数对速度和动力学性能的影响，并进行了试验验证。
6 ) minimum preload analyses of spindle bearings : the paper puts forward the principles and computations of the minimum preload through an example . 7 ) speed experiment of spindle bearings : the paper testy studies the influences of ( lie structure and lubrication parameters on the speed . from the results of analysis , computation and testing , the results show : 1 ) the friction heat and preloadings of spindle bearings obvious influences the speed and dynamics 本文全面揭示了主轴轴承的热特性、设计和应用参数对速度和动力学性能的影l狗，不仅为主轴单元和主轴轴承的设计与应用提供了理论与试验依据，而且提出了考虑摩擦热和预紧方式影响的高速轴承拟动力学分析方法，具有重要的理论和应用价值。
The minimum square method was used in regressing analysis for the result of treatment in a supposed distribution function , the " d " examination method was used for weibull distribution and index distribution , and obtained the distribution type in the life of the main shaft bearings , appraised the reliability life , the mean life and the reliability in 500hours of the main shaft bearings with theoretical distribution function 用残存比率法、平均故障法和累积故障法对主轴轴承可靠寿命进行了评估，用最小二乘法对现场数据统计处理结果进行了假设分布的回归分析，并用d检验法对威布尔分布和指数分布进行了分布检验，得出主轴轴承寿命分布类型。利用理论分布函数，对主轴轴承可靠寿命、平均寿命、 500小时的可靠度进行了评估。
This paper established a site data collect system and a data management system for the main shaft bearings of aircraft engine , collected a lot of datum and failure samples , through statistic analysis obtained the major failure model of the bearings and its principle of formation , and put some specific measures that can prevent bearing from failing in early stage to improve its reliability 本文建立了一套航空发动机主轴轴承现场数据收集体系及数据处理系统，收集了大量的现场数据和失效件。对数据和失效件进行了分析，研究得出了轴承的主要失效模式及形成机理，提出了预防轴承早期失效、提高轴承可靠性的具体措施。
A schedule , to report back on display : august 28 , 2006 29 9am - 5pm 2 am09 : august 2006 30 , 31 to 9 1 9 : 00 - 16 : 30 3 , the opening time : august 30 , 2006 at 9 : 30 4 , remove time : september 1 , 2006 as at 15 : 00 exhibitors scope of various bearings : metallurgical mine bearings , machine tool spindle bearings mill bearings , miniature bearings , bearings , ball bearings , roller bearings , needle roller bearings , roller bearings , gyroscope bearings , a high - precision bearings , high - speed bearings , bearings with block , linear motion bearings , low noise bearings lubricated bearings , ultra - low - temperature bearings , corrosion resistant bearings , joints bearings , deep groove ball bearings , angular contact ball bearings , aligning ball bearings , aligning roller bearings , cylindrical roller bearings , bearing a round , spiral roller bearings , thrust bearings , thrust ball bearings , thrust angular contact ball bearings , thrust spherical roller bearings , thrust needle roller bearings , thrust tapered roller bearings , turntable bearings , spherical ball bearings outside of cv and other bearings 参展范围各类轴承：冶金矿山轴承机床主轴轴承轧机轴承微型轴承组合轴承滚珠轴承滚筒轴承滚针轴承滚子轴承陀螺仪轴承高精轴承高速轴承带座轴承直线运动轴承低噪音轴承润滑轴承超低温轴承耐腐蚀轴承关节轴承深沟球轴承角接触球轴承调心球轴承调心滚子轴承圆柱滚子轴承圆轴承螺旋滚子轴承推力轴承推力球轴承推力角接触球轴承推力调心滚子轴承推力滚针轴承推力圆锥滚子轴承转盘轴承外球面球轴承等速万向节及其它轴承。
