数控加工过程中缺陷振动仿真  

Simulation of Defect Vibration in NC Machining

作　　者：杨亚楠 朱春华[1] 刘春东[1] 马立勇[1] 王久强 刘向辉 孙佳悦 马晓明 YANG Ya-nan;ZHU Chun-hua;LIU Chun-dong;MA Li-yong;WANG Jiu-qiang;LIU Xiang-hui;SUN Jia-yue;MA xiao-ming(Hebei Institute of Architecture and Civil Engineering,Zhangjiakou,Hebei 075000;Zhangjiakou Auto plant,LYNK&CO.,Zhangjiakou China,075000)

机构地区：[1]河北建筑工程学院,河北张家口,075000 [2]领克汽车张家口工厂,河北张家口,075000

出　　处：《河北建筑工程学院学报》2020年第2期115-118,共4页Journal of Hebei Institute of Architecture and Civil Engineering

基　　金：2018河北省高等学校科学技术研究青年基金项目(QN2018013);2017年河北省省级科技计划自筹经费项目(17211828);2018年度张家口市科技计划财政资助项目(1811009B-10);2018年度张家口市科技计划财政资助项目(1811009B-12);河北建筑工程学院教师发展专项(2018SJ1002)。

摘　　要：数控加工过程中,振动严重影响加工工件的质量,而工件表面缺陷与电机缺陷均会引起剧烈且不规则的振动。利用傅里叶变换正交分解,得到精度更高的小波包算法。基于仿真软件ANSYS,分别计算得到工件与电机的六阶固有频率,并得到加工过程中的受力变形。最终获得数控加工时,工件表面缺陷以及电机动不平衡引起的x、y、z三个方向的振动函数。In the process of NC machining,vibration seriously affects the quality of the workpiece,while the surface defects and motor defects of the workpiece will cause violent and irregular vibration.Fourier transform is decomposed orthogonally,and a more accurate wavelet packet algorithm is obtained.Based on the simulation software ANSYS,the sixth-order natural frequencies of the workpiece and the motor are calculated respectively,and the stress and deformation in the process of machining are obtained.Finally,the vibration functions of x,y and z directions caused by workpiece surface defects and motor dynamic unbalance are obtained.

关 键 词：振动 仿真 缺陷 数控加工 

分 类 号：TH213.6[机械工程—机械制造及自动化]