摘要
为解决超声电火花复合加工中超声振动加载于电极丝上的问题,将电火花加工机床中的电极丝由电主轴端部放入导向套中,对这种结构超声变幅杆进行研究,引入了一种轴心通孔式超声变幅杆,便于放入电极丝。通过解析计算得到振动频率为28kHz的两种不同形状的超声变幅杆的谐振频率和放大系数。利用ANSYS软件进行分析对比及优化,对解析计算进行验证,并进行了阻抗分析试验。研究结果表明:优化后的频率误差及放大系数误差较小,理论计算和实际谐振频率为1%左右,证明所设计的超声变幅杆符合设计要求。
In order to solve the problem of ultrasonic vibration loading on the electrode wires in ultrasonic EDM,the electrode wires are put into the guide sleeve from the end of the electric spindle in EDM machine tool.According to the structure,an axial through-hole ultrasonic horn is introduced to facilitate the insertion of electrode wires.Two different shapes of ultrasonic horns with vibration frequency of 28kHz are obtained by analytical calculation.The resonant frequencies and amplification coefficient of the two ultrasonic horns are analyzed and calculated.ANSYS software is used for analysis,comparison and optimization,the analytical calculation is verified by machining object,the impedance analysis test is carried out.The results show that the optimized frequency error and amplification factor error are small and the theoretical calculation and actual resonance frequency are about 1%,which verifies that the designed ultrasonic horn can meet the design requirements.
作者
李梦龙
于大国
王峰
王健
周瑞峰
Li Menglong;Yu Daguo;Wang Feng;Wang Jian;Zhou Ruifeng(School of Mechanical Engineering,North University of China,Taiyuan 030051,China;不详)
出处
《工具技术》
北大核心
2021年第10期58-62,共5页
Tool Engineering
基金
国家自然科学基金项目(51875532)
山西省留学基金(HGKY2019065)
山西省研究生教育创新项目(2020SY351)。
关键词
超声振动
变幅杆
ANSYS
阻抗分析
ultrasonic vibration
ultrasonic horn
ANSYS
impedance analysis
