基于GMA再生型车削颤振抑制系统实验研究

摘要

Machining flutter is a complex and harmful vibration between the cutting tool and the workpiece in cutting processes. This paper analyzes the mechanism of regenerative flutter theory, establish the dynam-ics model of the Giant Magnetostrictive Actuator ( GMA) flutter suppression system, and discusses the sta-bility of the Giant Magnetostrictive Actuator flutter suppression system. At last, we verify the feasibility of the flutter suppression system based on the GMA by comparing the vibration signal data of the cutting flutter experiment result with the flutter suppression experiment result.%切削颤振是金属加工时刀具和工件之间的一种复杂且有害的强烈相对振动。文章从理论上分析了再生型颤振的机理，建立超磁致伸缩致动器( GMA)颤振系统动力学模型，并阐述了超磁致伸缩微致动器颤振系统的稳定性，最终通过对比切削颤振实验和颤振抑制实验的振动信号数据结果，验证了基于GMA的颤振抑制系统抑制切削颤振的可行性。