Design and analysis of a piezoelectric compliant x-y microgripper

被引：0
|
作者：
Song S. [1 ]
Yang Y. [1 ]
Wu G. [1 ]
Zhang S. [1 ]
Wei Y. [2 ]
机构：
[1] College of Mechanical Engineering and Mechanics, Ningbo University, Ningbo
[2] Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2022年 / 41卷 / 10期
关键词：
Compliant mechanism; Microgripper; Multiple degrees of freedom; Piezoelectric actuation;
D O I：
10.13465/j.cnki.jvs.2022.10.020
中图分类号：
学科分类号：
摘要：
Aiming at the performance requirements of high displacement amplification ratio, multiple degrees of freedom and translational clamping for microgrippers in the fields of micro-operation and micro-assembly, a double-leaf bridge mechanism and a parallelogram mechanism were used combinedly to design a piezoelectric compliant x-y microgripper. The statics and dynamics models of the microgripper were established by the finite-element method, and the displacement amplification ratio, the natural frequency, and the output coupling ratio of the microgripper were analyzed by the ANSYS Workbench software. Finally, an experimental test system was built to verify the open-loop performances of the microgripper. The experimental results show that the displacement amplification ratios of the microgripper in x- and y-directions are 30.8 and 8.6, and the first resonant frequency is 123.3 Hz. If an input displacement of 10 μm is applied, the operating ranges in x-and y-directions are 0-616.6 μm and 0-51.0 μm, and the gripping force range is 0-25.8 mN.The relative errors of the x- and y-direction displacement amplification ratios and the first resonant frequency between experimental tests and simulation values are 17.9%, 19.8%, and 13.9%, respectively. The experimental results verify the feasibility of the theoretical model and simulation analysis. © 2022, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：154 / 161
页数：7
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