【作者】 张家库；

【导师】 李志远；

【作者基本信息】 合肥工业大学 ， 机械制造及其自动化， 2008， 硕士

【摘要】 高速电主轴近年来发展迅速,使用要求越来越高。角接触球轴承的参数性能对电主轴性能的影响至关重要,对电主轴的设计研究很有意义。角接触球轴承的速度、刚性和疲劳寿命是使用者最关心的参数,而这些参数又受到很多因素的影响。本文以主轴轴承的静动态方程为基础建立分析模型,从数值分析的角度全面分析静动态角接触球轴承的主要参数,并用VC++编制了参数计算分析程序。本文在拟静力学轴承理论的基础上,应用梁杆结构理论和有限单元理论分析了主轴—轴承系统的固有频率和临界转速,应用Hertz接触理论和“套圈控制”理论建立了角接触球轴承静动态参数分析模型,运用数值分析方法处理非线性方程组,对轴承静动态参数进行了分析求解。在此基础上,本文详细讨论了轴承的刚度和疲劳寿命的影响因素。除此之外,本文介绍了主轴轴承的安装配置和预紧方式,并讨论了不同安装和预紧方式对轴承参数性能的影响。在定位预紧下,主轴轴承动态旋转时会出现预紧力变化和滚动体变形情况,本文对此做了详细说明,并提出了相应的求解方法。高速角接触球轴承的参数性能对主轴性能十分重要,本文从几个主要方面讨论了这些参数性能的影响因素,对主轴轴承的设计分析计算有一定的借鉴意义。更多还原

【Abstract】 With the development of the High-speed motorized spindle system, the technical requirement is higher than before. The parameters performance of angular-contact ball bearing is important to motorized spindle system and its designing and research. Speed, stiffness and fatigue life are the main parameters of angular contact ball bearing to user’s consideration, which are affected by many other factors. This paper has established the analysis model based on static and dynamic equations of shaft-spindle system, analyzed the main parameters of angular contact ball bearing from the angle of numerical analysis, given a program about parameters analysis in VC++.This paper based on quasistatic bearing theory, working out the free-frequency and critical speed of spindle-bearing system with beam-rod structure theory and FEM, establishing the analysis model through the Hertz contact theory and Ferrule-Control theory of Jones, giving the solution of the non-linear equations. Additionally, we give the factors about influence to stiffness and fatigue life in detail.This paper has introduced the different manners of mount and preload of bearing and given the discussion about the influence of diverse mount and preload styles to the parameters performance of bearing. In the dynamic situation of localization preloaded bearing, preload will be changed and the rolling elements will have deformation, which be illustrated particularly with its solution method.The parameters performance of High-speed angular contact ball bearing is significant to spindle’s performance. This paper has given the influence factors to the parameters, which are useful to designing of spindle bearing.更多还原