大端接圆柱杆的复合圆锥形变幅杆设计及应用

doi:10.13700/j.bh.1001-5965.2018.0699

北京航空航天大学学报 ›› 2019, Vol. 45 ›› Issue (8): 1630-1638.doi: 10.13700/j.bh.1001-5965.2018.0699

大端接圆柱杆的复合圆锥形变幅杆设计及应用

靳涛, 胡小平, 于保华

杭州电子科技大学机械工程学院, 杭州 310018

收稿日期:2018-11-28 出版日期:2019-08-20 发布日期:2019-09-06
通讯作者: 胡小平 E-mail:xiaoping.hu@hdu.edu.cn
作者简介:靳涛男,硕士研究生。主要研究方向:特种精密加工技术、声学系统组件;胡小平女,博士,教授。主要研究方向:特种精密加工技术、设计理论与方法、知识工程;于保华男,博士,高级工程师。主要研究方向:特种精密加工、精密测量及控制。
基金资助:
国家自然科学基金（51475130）；浙江省自然科学基金（LY17E050025）

Design and application of compound conical horn with cylinder at big end

JIN Tao, HU Xiaoping, YU Baohua

School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China

Received:2018-11-28 Online:2019-08-20 Published:2019-09-06
Supported by:
National Natural Science Foundation of China (51475130); Natural Science Foundation of Zhejiang Province (LY17E050025)

摘要/Abstract

摘要： 针对目前国产超声变幅杆耐用性较差的问题，设计一种新型复合变幅杆，满足振幅的条件下，使变幅杆具有较小的工作应力。通过波动方程建立新型复合变幅杆参数方程，着重计算了放大倍数、形状因数及应力极大点等参数。首先，采用有限元分析软件对变幅杆进行动力学分析，得到的结果与理论结果进行比较，验证了理论公式的正确性。然后，在此基础上与圆锥形变幅杆、指数形变幅杆及小端接圆柱杆的复合圆锥形变幅杆进行比较，结果表明新型复合变幅杆具有更好的综合性能和更小的最大应力。最后，基于ANSYS Workbench优化设计功能对变幅杆进行优化修整，对优化后的变幅杆进行阻抗分析和振动性能测试，测试结果表明新型复合变幅杆理论性能参数与实验测试结果基本一致，变幅杆的谐振频率为20 013 Hz，当换能器输出振幅峰峰值为13 μm时，变幅杆的输出端振幅峰峰值可达40 μm，变幅杆振幅实际放大倍数为3.08，满足切削实验振幅的要求。

关键词: 综合性能, 寿命, 最大应力, 优化设计, 有限元分析

Abstract: Aimed at the problem of poor durability of the domestic ultrasonic horn, a new type of compound horn is designed to meet the amplitude and make the horn have a small working stress.The new composite horn parameter equation is established by the wave equation, and the parameters such as magnification, shape factor and stress maximum point are calculated.Frist, the finite element analysis software was used to analyze the kinetics of the horn. The obtained results were compared with the theoretical results to verify the correctness of the theoretical formula. Second, on the basis of this, compared with the conical horn, the exponential deformation horn and compound conical horn with cylinder at big end, the results show that the new composite horn has better comprehensive performance and smaller maximum stress. Finally, based on ANSYS Workbench optimization design function, the horn is optimized and trimmed, and the optimized horn is subjected to impedance analysis and vibration performance test. The test results show that the theoretical performance parameters of the new composite horn are basically consistent with the experimental test results. The resonant frequency of the rod is 20 013 Hz. When the transducer peak-to-peak value of the output amplitude is 13 μm, the peak-to-peak value of the output amplitude of the horn can reach 40 μm, and the amplitude amplification factor of the horn is 3.08, which satisfies the requirements of the cutting experiment amplitude.

Key words: comprehensive performance, life, maximum stress, optimization design, finite element analysis

中图分类号:

V261
TH122

靳涛, 胡小平, 于保华. 大端接圆柱杆的复合圆锥形变幅杆设计及应用[J]. 北京航空航天大学学报, 2019, 45(8): 1630-1638.

JIN Tao, HU Xiaoping, YU Baohua. Design and application of compound conical horn with cylinder at big end[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2019, 45(8): 1630-1638.

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大端接圆柱杆的复合圆锥形变幅杆设计及应用

Design and application of compound conical horn with cylinder at big end

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