Excitation model and motion analysis of the vibratory bowl feeder

Abstract

In the design of a vibratory bowl feeder to produce the desired part feed rate, motion analyses are necessary on both the bowl and the part during excitation of the bowl feeder. This study modelled the excitation force of the electromagnet that gives a vibratory motion to the bowl feeder. The model showed that the excitation force increased linearly with the amplitude of the excitation voltage, whereas the force decreased parabolically with the increment of frequency. The force model was then applied to the equation of motion for the motion analysis of the bowl. The motion of the part was finally modelled to be associated with the result of the bowl motion. The model of part motion was analyzed to reveal that the feed rate increased with the reduction of frequency, and also increased with enlarging the magnitude of the excitation voltage. It was also illustrated that in the high feed rate, the part travelled mainly with jump motion, while in the low feed rate, it travelled with slip motion. The model proposed in this study can be used in the optimal design of various bowl feeders. ? TJPRC Pvt. Ltd.