Vibration Characteristics of Loaded Vibratory Feeder

Abstract

This paper describes the vibration characteristics of a resonance feeder which is susceptible to the reaction force of the load. When the conveyed bodies move on the vibrating plate, the resonance frequency of the system decreases and the damping effect increases. It is found that the resonance frequency of the feeder varies not only with the inertia force of the load but also with the frictional force. The effect of the load is substituted by the equivalent weight and the equivalent coefficient of viscous damping so that the most suitable exciting force and the exciting frequency are found easily. To keep the amplitude constant in spite of variations of the exciting frequency and the load, the exciting frequency has to be set 2-3% lower than the resonance frequency.