摘要
高速加工中铣削颤振不仅降低工件的表面加工质量,严重时还会造成刀具或者其他加工部件的损坏,因此对电主轴铣削颤振进行控制具有重要的意义。为对电主轴铣削过程中的颤振进行有效控制,在双绕组无轴承感应电动机的基础上,提出一种具有内置力执行器的感应型高速电主轴结构,建立电主轴—刀具系统的有限元模型、动态铣削模型、双绕组感应型电主轴电磁力模型,在对具有内置力执行器的感应型高速电主轴电磁力进行解耦后,提出基于内置力执行器的电主轴铣削颤振的主动控制方案,通过仿真分析控制器的主要参数对电主轴铣削稳定性的影响。结果表明采用具有内置力执行器的感应型高速电主轴能够有效地提高电主轴铣削的稳定区域以及在抑制铣削颤振方面具有明显效果。
Chatter not only causes poor surface finish,but gives rise to electric spindle spindle,cutter and parts damage in a high speed machining,so there is great significance on online control of electric spindle chatter in milling.In order to effectively control electric spindle chatter in milling,the high speed induction electric spindle with a built-in force actuator based on bearingless induction motor with double-winding is presented.The finite-element-based electric spindle-tools dynamic,the dynamic milling and the electric spindle with double windings are modeled.After the electromagnetic force which is worked on the high-speed induction electric spindle with built-in actuator decoupled,the active chatter control scheme for electric spindle-tools is proposed.The influence of the controller main parameters on the stability characteristics of the milling system is investigated.The simulation results show the controller parameters can improve the stability region of milling and the proposed control scheme has obvious effect on suppressing the electric spindle chatter in milling.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2012年第1期185-192,共8页
Journal of Mechanical Engineering
基金
高等学校博士学科点专项科研基金资助项目(20110101110040)
关键词
电主轴
颤振
力执行器
振动控制
Electric spindle Chatter Force actuator Vibration control
