湖南大学学报（自然科学版）2024，Vol.51Issue(2)：219-226,8.DOI:10.16339/j.cnki.hdxbzkb.2024160
基于振动速度与噪音的横梁动态特性优化
Optimization of Beam Dynamic Characteristics Based on Vibration Velocity and Noise
摘要
Abstract
Aiming at the problem that of low machining accuracy of a certain type of small five-axis high-precision CNC machine tool is not high,the dynamics of its beam is studied.The natural frequency of the beam is studied by combining the hammering mode test experiment and finite element simulation calculation.Measure the vibration speed and vibration noise at different speeds of the spindle,and the vibration evaluation index equation is established through weighting processing to obtain the optimization target.The shape of the studied beam is optimized.The maximum error of the natural frequency obtained by the test and simulation is 5.76％,and the frequency range of 83～117 Hz is determined based on the spindle vibration,which is the low-order natural frequency range that needs to be avoided in the design of the beam.After shape optimization,the first-order natural frequency of the beam is 139 Hz,which is an increase of about 20.870％compared with the original beam,and the dynamics of the beam is improved.关键词
动态性能/模态测试实验/有限元/赋权处理/振动评价指标Key words
dynamics/modal test experiments/finite elements/empowerment processing/vibration evaluation index分类
信息技术与安全科学引用本文复制引用
叶寒,郭俊辉,刘华,高艺,刘军,张军,李莉,刘旭波,李诗晨,董高翔,姜乐付..基于振动速度与噪音的横梁动态特性优化[J].湖南大学学报（自然科学版）,2024,51(2):219-226,8.基金项目
小型立式五轴加工中心研发项目(HX202302170001),Research and Development of Small Vertical Five-axis Machining Center(HX202302170001) （HX202302170001）
