电流变技术在抑制深孔切削颤振中的应用

摘要

In order to suppress the deep hole machine cutting vibration, a set of electro-rheological fluid (ERF) dampers based on flow and shear mixed principle was designed by using the electro-rheological effect of ER fluids. The dynamic model of deep hole cutting system was established and analyzed, and the kinematic differential equations of the system was obtained. MATLAB/Simulink was used for simulation and the corresponding experiments were carried out. The results show that the electro-rheological fluid damper can reduce the flutter amplitude, and it has different damping effect for different electric field intensities. Therefore, controlling the electric field intensity of the electro-rheological fluid damper can effectively suppress the cutting chatter of deep hole machines.%针对深孔加工中出现的切削颤振问题，利用电流变液的电流变效应，设计一套基于流动和剪切混合工作模式的电流变减振器。通过对深孔切削系统的动力学模型的建立和分析，得到系统的运动微分方程。利用MATLAB/Sinmulink对动力学模型进行仿真分析并进行实验验证，结果表明电流变减振器能够减小颤振的振幅，且在不同电场强度下具有不同的减振效果。因此通过控制电流变减振器的电场强度可以有效地抑制深孔机床中切削颤振的发生。