电流变技术在机床颤振控制中应用的研究

研究开发了一种控制机床颤振的电流变减振器。理论分析和试验结果表明，电流变减振器的刚度及阻尼随外加电场强度的增加而增大，主振系统的振幅随电场强度的增加而减小。只要场强选取适当，采用电流变减振装置可以使铣床心轴的振幅降低50%～80%。试验在卧式升降台铣床上进行。

STUDY ON THE APPLICATION OF ELECTRO-RHEOLOGICAL TECHNOLOGY TO MACHINE CHATTER CONTROL

An ER damper for controlling machine chatter is dev eloped. The theoretical and experimental results show that the stiffness and dam ping of ER damper are growing with the increase of the electric field strength a pplied, the vibration response of main vibration system (arbor) will reduce by r aising electric field strength in a certain scope. As far as the electrical fiel d strength selected is appropriate, the vibratory amplitude of milling machine a rbor will decrease to 50%～80% as low as that in common milling. All experiments　presented here are performed on a horizontal knee and column type milling machi ne.