An electromagnetic semi-active dynamic vibration absorber for thin-walled workpiece vibration suppression in mirror milling  

作　　者：Jianghua KONG Bei DING Wei WANG Zhixia WANG Juliang XIAO Hongyun QIU 

机构地区：[1]School of Mechanical Engineering,Tianjin University,Tianjin 300350,China [2]Tianjin Key Laboratory of Nonlinear Dynamics and Control,Tianjin 300350,China [3]Key Laboratory of Modern Mechanisms and Equipment Design of the State Ministry of Education,Tianjin University,Tianjin 300350,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2024年第8期1315-1334,共20页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.12172248,12021002,12302022,and 12132010);the Tianjin Research Program of Application Foundation and Advanced Technology of China(No.22JCQNJC00780);IoT Standards and Application Key Laboratory of the Ministry of Industry and Information Technology of China(No.202306)。

摘　　要：As critical components of aircraft skins and rocket fuel storage tank shells,large thin-walled workpieces are susceptible to vibration and deformation during machining due to their weak local stiffness.To address these challenges,we propose a novel tunable electromagnetic semi-active dynamic vibration absorber(ESADVA),which integrates with a magnetic suction follower to form a followed ESADVA(follow-ESADVA)for mirror milling.This system combines a tunable magnet oscillator with a follower,enabling real-time vibration absorption and condition feedback throughout the milling process.Additionally,the device supports self-sensing and frequency adjustment by providing feedback to a linear actuator,which alters the distance between magnets.This resolves the traditional issue of being unable to directly monitor vibration at the machining point due to space constraints and tool interference.The frequency shift characteristics and vibration absorption performance are comprehensively investigated.Theoretical and experimental results demonstrate that the prototyped follow-ESADVA achieves frequency synchronization with the milling tool,resulting in a vibration suppression rate of approximately 47.57%.Moreover,the roughness of the machined surface decreases by18.95%,significantly enhancing the surface quality.The results of this work pave the way for higher-quality machined surfaces and a more stable mirror milling process.

关 键 词：semi-active dynamic vibration absorber(SADVA) mirror milling selfsensing vibration absorption tuning thin-walled workpiece 

分 类 号：O326[理学—一般力学与力学基础]