Modeling and Performance Analysis of Linear Part Feeder System Actuated by Piezoelectric Transducers

초록

In this research, a piezoelectric linear part feeder system that transports tiny parts is modeled, and its performance is analyzed. Design parameters affecting the part feeding velocity of a linear part feeder activated by piezoelectric transducers are analyzed. As a first step, the structure and operating principle of a linear part feeder with two degrees of freedom driven by a piezoelectric bimorph actuator are presented. Then, the resonance system of the linear part feeder is designed to amplify the actuation motion. Thereafter, based on the coefficient of restitution considering damping in vibro-impact between the part and conveyor, a part feeding mechanics model is developed, and the proposed model is evaluated by comparison with experimental part feeding velocity data from a commercial feeder and the proposed prototype. Finally, the effect of the vibration angle on the feeding velocity is analyzed, and a design methodology for piezoelectric linear part feeders is proposed based on a desired feeding performance and target part.

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