摘要
针对航天薄壁件在铣削减重网格过程中的铣削振动问题,提出了一种采用主动阻尼装置(ADD)对带网格薄壁件的铣削振动进行抑制的方法,对铣削振动抑制进行了理论推导、仿真分析与实验研究。首先,对ADD所采用的直接速度反馈控制原理进行了理论验证;然后,采用ANSYS有限元分析软件对带网格的薄壁件进行了模态仿真分析;最后,搭建了铣削振动抑制实验台,对比了在不同工况下ADD对带网格薄壁件的铣削振动抑制效果。研究结果表明:ADD可以有效抑制薄壁件在不同工况下的铣削振动,最高降幅达79.98%;ADD具有作用频带宽的特点,能够抑制多频率的铣削振动;ADD对不同网格剩余厚度的薄壁工件均有振动抑制效果,即在薄壁件由厚到薄的铣削过程中,ADD均能发挥其作用;ADD可以降低薄壁工件的表面粗糙度。
Aiming at the milling vibration problem of aerospace thin-walled workpieces in the process of milling weight reduction grid,the simulation,theoretical and experimental research were carried out.Based on the principle of direct speed feedback control,an active damping device(ADD)was used to suppress the milling vibration of thin-walled parts with weight reduction grid.First,the principle of direct speed feedback control used by ADD was theoretically verified,and then ANSYS finite element analysis software was used to conduct modal simulation analysis on thin-walled parts with weight reduction grid.Finally,a milling vibration suppression test bench was built to compare the vibration suppression effect of ADD on thin-walled parts with weight reduction grid under different working conditions.The experimental results show that ADD can effectively suppress the milling vibration of thin-walled parts under different working conditions,with a maximum reduction of 79.98%;ADD has the characteristics of a bandwidth of action frequency and can suppress multi-frequency milling vibration;ADD has a vibration suppression effect on thin-walled workpieces with different residual thickness of grid,that is,ADD is effective in the milling process of thin-walled workpieces from thick to thin;ADD can reduce the surface roughness of the workpiece with weight reduction grid.
作者
王健
何立东
杨建江
WANG Jian;HE Li-dong;YANG Jian-jiang(School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)
出处
《机电工程》
CAS
北大核心
2022年第2期262-268,共7页
Journal of Mechanical & Electrical Engineering
基金
中国博士后科学基金资助项目(2020M670113)
中央高校基本科研业务费专项资金项目(ZY2105)。
关键词
铣削振动
主动阻尼装置
振动主动控制
薄壁件
作动器
milling vibration
active damping device(ADD)
active vibration control
thin-walled workpieces
actuator
