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Micromachines 2014, 5(3), 547-557; doi:10.3390/mi5030547

Structural Design and Experimental Analysis of a Piezoelectric Vibration Feeder with a Magnetic Spring

Institute of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
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Received: 25 June 2014 / Revised: 2 August 2014 / Accepted: 5 August 2014 / Published: 19 August 2014
(This article belongs to the Special Issue Microactuators)
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Abstract

A piezoelectric vibration feeder with a magnetic spring is discussed in this paper. The feeder can keep resonance frequency relatively stable under changing loading. Through the analysis on the working principle and magnetic spring stiffness characteristic of this feeder, the dynamic model was established and the relationship among system resonance frequency, loading and magnetic spring stiffness was obtained. The analysis showed that, as the loading changed, the magnetic spring stiffness changed accordingly, which maintained a trend of stability in the system resonance frequency. A prototype was made for the experiment, and the relationship among the loading, magnetic spring axial clearance and system resonance frequency was obtained. The result showed that, when the loading changes, the resonance frequency and feeding speed tended to be stable, which matched the theoretical analysis. Through comparison with a traditional vibration feeder, within nominal loading, this new feeder has more stable resonance frequency and feeding speed. View Full-Text
Keywords: piezoelectric vibration feeder; resonance; magnetic spring; axial clearance piezoelectric vibration feeder; resonance; magnetic spring; axial clearance
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Tian, X.; Yang, Z.; Liu, Y.; Shen, Y.; Chen, S. Structural Design and Experimental Analysis of a Piezoelectric Vibration Feeder with a Magnetic Spring. Micromachines 2014, 5, 547-557.

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