基于直线电机驱动的插件机振动特性研究  

Research on vibration characteristics of plug-in machine driven by linear motor

作　　者：胡意波 高自成[1] 李立君[1] 邹洋 罗义 赵凯杰 HU Yibo;GAO Zicheng;LI Lijun;ZOU Yang;LUO Yi;ZHAO Kaijie(School of Mechanical and Electrical Engineering,Central South University of Forestry and Technology,Changsha 410000,CHN;Shenzhen Xiangju Industrial Co.,Ltd.,Shenzhen 518100,CHN)

机构地区：[1]中南林业科技大学机电工程学院,湖南长沙410000 [2]深圳市湘聚实业有限公司,广东深圳518100

出　　处：《制造技术与机床》2023年第12期32-39,共8页Manufacturing Technology & Machine Tool

基　　金：湖南省重点研发计划项目(2021NK2023)。

摘　　要：针对由直线电机引起的机械振动影响异形插件机精度的问题,对异形插件机的振动特性进行研究,并根据振动特性进行结构优化。首先对异形插件机上的直线电机进行推力和频率测试;其次对异形插件机的整机模型进行模态分析,根据模态分析结果对零部件进行结构优化,提升异形插件机的低阶固有频率;然后对优化后的整机模型进行谐响应分析,计算出取样点的振幅-频率响应数据;最后利用视觉相机对异形插件机进行重复定位精度测试实验。结果表明,优化后的异形插件机的前六阶固有频率有不同程度的提升,采样点在0~50 Hz的直线电机激励下,振动位移在0.03 mm左右。实验测试重复定位精度稳定在±0.03 mm内,验证了结构优化的有效性和仿真结果的可靠性。Aiming at the problem that the mechanical vibration caused by the linear motor affects the accuracy of the special-shaped plug-in machine,the vibration characteristics of the special-shaped plug-in machine were studied,and the structure was optimized according to the vibration characteristics.Firstly,the thrust and frequency tests of the linear motor on the special-shaped plug-in machine were carried out.Secondly,the modal analysis of the whole machine model of the special-shaped plug-in machine was carried out,and the structural optimization of the parts was carried out according to the modal analysis results,so as to improve the low-order natural frequency of the special-shaped plug-in machine.Then,the harmonic response analysis of the optimized whole machine model was carried out,and the amplitude-frequency response data of the sampling point is calculated.Finally,the vision camera was used to test the repeatability of the special-shaped plug-in machine.The results show that the first six natural frequencies of the optimized special-shaped plug-in machine have different degrees of improvement,and the vibration displacement of the sampling point was about 0.03 mm under the excitation of the linear motor of 0~50 Hz.The experimental test was that the repeatability of positioning was stable within ±0.03 mm,which verifies the effectiveness of structural optimization and the reliability of simulation results.

关 键 词：异形插件机 重复定位精度 振动特性 直线电机 模态分析 谐响应分析 结构优化 

分 类 号：TH-39[机械工程] TH113.1[电子电信—微电子学与固体电子学] TN403