摘要
针对不同工况下热效应对高速角接触球轴承疲劳寿命研究的不足,首先对一般角接触球轴承进行了动力学分析;其次在ANSYS中建立了7008C轴承的有限元模型,并通过电主轴测温试验验证了模型的可靠性;最后综合分析了7种工况下载荷、转速对轴承温升的影响。得出随着转速升高或轴向载荷的增大,轴承的发热量增大,温度升高,润滑油的粘度降低,径向载荷对轴承的发热量及温升影响不明显。结果符合实际,为进一步轴承疲劳寿命的研究奠定了基础。
Aiming at the deficiency of the research fatigue life of high speed angular contact ball bearings under different conditions,the kinematics of angular contact ball bearing was analyzed; the kinematics parameters were acquired based on the theory of quasi statics. Then the friction torque and total heat output were calculated. A complete finite element parametric model of angular contact ball bearing was established to get bearing temperature field. The effect of rotational speed and load on the temperature field of rolling bearing was studied. The motorized spindle temperature test results showed that temperature field calculation results were in good agreement with test results,so FEM analysis can be applied to the engineering practice.
出处
《组合机床与自动化加工技术》
北大核心
2015年第3期13-15,20,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家科技支撑计划项目(2012BAH32F07)
关键词
角接触球轴承
温度场
接触分析
ANSYS
angular contact ball bearing
temperature field
contact analysis
ANSYS
