Design of a longitudinal-torsional composite ultrasonic vibration machining system and its natural frequencies merging

被引：0
|
作者：
Yuan S.-M. [1 ,2 ]
Liu M. [1 ,2 ]
机构：
[1] School of Mechanical Engineering & Automation, Beihang University, Beijing
[2] Beijing Engineering Technological Research Center of High-efficient & Green CNC Machining Process and Equipment, Beijing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2016年 / 35卷 / 05期
关键词：
Finite element analysis; Frequencies merging; Helical slots; Longitudinal-torsional composite ultrasonic vibration;
D O I：
10.13465/j.cnki.jvs.2016.05.002
中图分类号：
学科分类号：
摘要：
Longitudinal-torsional composite ultrasonic vibration machining technique attracts more and more attentions in hard and brittle materials machining, for this kind of requirement, a longitudinal-torsional composite ultrasonic vibration machining system was designed, the frequencies merging problem existing in this kind of system was studied based on the finite element analysis. An ultrasonic transducer and a composite horn were designed using the numerical analysis method. After-ward, helical slots were made on the horn, parts of its longitudinal vibrations were converted into its torsional vibrations. Based on the principle that “the closer the longitudinal natural frequencies and the torsional natural ones, the better the results”, the offects of the system's parameters on its longitudinal natural frequencies and torsional natural ones were analyzed with a finite element analysis software to realize its natural frequencies merging. At last, the system's modal analysis and transient dynamic analysis showed that the system can realize longitudinal-torsional composite ultrasonic vibration, the effectiveness and applicability of this kind of frequencies merging method are verified. © 2016, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：8 / 13
页数：5
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