基于磁流变效应的变参数切削颤振抑制方法研究  

Cutting Chatter Suppression Method Research Based on the Variable Parameters of the Magnetorheological Effect

作　　者：谷涛[1] 张永亮[1] 洪明[1] 

机构地区：[1]上海理工大学机械工程学院

出　　处：《组合机床与自动化加工技术》2016年第6期67-70,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金(51205255)

摘　　要：随着我国加工制造业的发展,提高切削加工水平成为发展制造业亟待解决的重要问题,而机床切削颤振一直是制约机械加工质量的最重要的因素之一。针对车削产生的颤振问题,设计了磁流变车削减振装置,并对其结构及减振机理进行了分析,建立起了磁流变车削装置的动力学模型。对不同波形、峰值及频率电流作用下的切削系统振动响应进行了理论分析及仿真,结果表明:幅值为6A、频率为1Hz的方波电流为此切削系统下的最佳控制电流;此外通过改变实验中电流变化峰值、频率及波形,将各个参数对减振效果的影响规律进行了研究与探讨。With the development of manufacturing industry in our country,improving the level of machining has become an important problem urgently to be solved in development of manufacturing industry,while the machine tool cutting chatter is an important factor of influence to cutting quality. To suppress chatter on cutting system,a device for turning chatter suppression based on magneto-rheological（ MRF） is developed.The dynamical model of MRF turning device was established through analyzing its working principle and structure. The vibration responses were analyzed theoretically and simulated by MATLAB under different waveforms,peak and frequency of current. The conclusions were drawn that the optimum control current is square wave with amplitude equal to 6A and frequency equal to 1Hz in the turning system of this paper. In addition,the chatter suppressive experiments were conducted under different waveforms,peak and frequency of current,the influence law of above current parameters on chatter suppressive effect was researched and discussed.

关 键 词：磁流变 动力学模型 车削试验 MATLAB仿真 

分 类 号：TH166[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]