MATEC Web Conf.
Volume 257, 20192018 International Conference on Progress in Mechanical and Aerospace Engineering (PMAE 2018)
|Number of page(s)||4|
|Section||Materials Science and Mechanical Engineering|
|Published online||16 January 2019|
Designing of Ultrasonic Horns to Improve Amplitude Uniformity in Ultrasonic Metal Welding
Dept. of Mechanical Engineering, Incheon National Univ., Yeonsu Gu, Incheon, 22012, Korea
The ultrasonic metal welding has been used extensively in many fields because it can weld thin layers of highly conductive and dissimilar materials with high reliability. In particular, one-wave length horns with four welding tips on both sides of the horn are widely used for welding positive and negative electrodes and tabs of rechargeable lithium ion batteries. As the vibrational amplitude of each tip is known to be non-uniform, this causes some problems in welding performance. In this study, the one-wave length horn which has four welding tips on both sides of the horn is newly designed to improve amplitude uniformity of each tip. The design of experiment technique is employed to determine the optimum configuration of the horn. The modal analysis and harmonic response analysis are repeatedly conducted to obtain the uniform amplitude of horn tips, and stress distribution in the horn is analyzed finally. It is shown that the uniformity of amplitude can be improved by making appropriate grooves on both sides of the conventional horn.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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