功率超声铆焊变幅杆的设计与分析  

Design and Analysis of Power Ultrasonic Stepped Riveted Horn

作　　者：李永亮 梁强 冯俊[1] LI Yongliang;LIANG Qiang;FENG Jun(Chongqing Key Laboratory of Manufacturing Equipment Mechanism Design and Control,Chongqing Technology and Business University,Chongqing 400069,China)

机构地区：[1]重庆工商大学制造装备机构设计与控制重庆市重点实验室,重庆400069

出　　处：《机械科学与技术》2024年第4期591-599,共9页Mechanical Science and Technology for Aerospace Engineering

基　　金：重庆市自然科学基金面上项目(cstc2020jcyj-msxmX0276);重庆市教委科学技术研究计划项目(KJQN201900827)。

摘　　要：功率超声塑料铆焊变幅杆的设计中,纵波谐振频率和振幅是设计的关键。某工程实践中以阶梯形铆焊变幅杆为设计对象,有限元模态分析中,其纵波固有频率为19982 Hz,谐波扫频响应共振频率为20082 Hz,阻抗测试频率为19813 Hz,三者误差率较小,且在材料阻尼率为0.004时,变幅杆端头有仿真最大振幅59.16μm,与激光测振仪测量的振幅49.8μm同样误差较小,实践加工验证,铆焊效果较好。结果表明有限元固有模态、谐波响应、阻抗分析、振幅测试分析可为超声变幅杆的工程设计提供高效的设计、分析、测试方法。In the design of power ultrasonic plastic riveted horn,the resonant frequency and amplitude of longitudinal wave are the key parameters to the design.In an engineering practice,the stepped riveted horn is taken as the design object.In the finite element modal analysis,the natural frequency of longitudinal wave is 19982 Hz.The resonance frequency of its harmonic sweep response is 20082 Hz.In impedance analysis,the resonance frequency of the stepped riveted horn vibration is 19813 Hz.In general,the error change rate between three frequencies is small.Under the condition that the material damping rate is 0.004,the maximum amplitude displacement at the end of horn with harmonic response is 59.16μm.Using laser vibrometer,the amplitude of the end of horn is about 49.8μm.The error between them is also very small.Practical processing verification,the riveting effect is better.The results show that the natural mode,harmonic response,impedance analysis and amplitude test analysis can provide efficient analysis and test methods for the engineering design of ultrasonic horn.

关 键 词：铆焊变幅杆 模态分析 谐波响应 阻抗分析 振幅测试 

分 类 号：TB559[理学—物理]