发动机主轴滚子轴承铣削加工稳定性模糊控制方法的研究

Research on Fuzzy Control Method for Milling Stability of Engine Spindle Roller Bearing

为了进一步保障发动机主轴滚子轴承的加工质量,提出了发动机主轴滚子轴承铣削加工稳定性的模糊控制方法,构建了滚子轴承铣削加工模型,深入分析了铣削加工颤振产生的机理。基于模糊集合理论设计了模糊PID控制器,建立了颤振频率模糊PID控制流程,实现了对发动机主轴滚子轴承铣削加工稳定性的模糊控制。实验结果表明,应用提出方法后,能有效控制铣削加工颤振频率,滚子轴承表面振纹显著减少甚至消失。

In order to guarantee the machining quality of roller bearings,a fuzzy control method for milling stability of roller bearings for engine spindles is proposed.The milling model of roller bearing is constructed,and the mechanism of milling chatter is deeply analyzed.In this study,the fuzzy set theory is introduced to design the fuzzy PID controller.The fuzzy PID control flow of flutter frequency is designed,and the fuzzy control of milling stability of engine spindle roller bearing is realized.The experimental results show that the milling chatter frequency is effectively controlled and the chatter lines on the surface of roller bearings are significantly reduced or even disappeared.