Numerical Analysis and Experimental Study on High Frequency Piezoelectric Feeding Device of Block Materials

Abstract

According to the needs of ultrasonic vibration feeding, we developed an ultrasonic piezoelectric feeding device. The device with unrestricted length and width and the feeding speed is uniform. we analyzed feeding the boundary conditions and calculated the expression of the average feeding speed. Using ANSYS to analyze the relevant parameters of feeding vibrator, we made the piezoelectric feeding vibrator and carried out a series of experiments to test the feeding effect by using Laser Doppler vibrometry. The results showed that the amplitude of the first order longitudinal vibration is maximum when the excitation frequency is 34.7kHz; When the feeding device is at the excitation frequency and the driving voltage is 130V, the feeding effect of the heavy material with smooth surface is very good (M10×30 bolts, M20 nuts); Materials with rough surface and lighter than 0.5g have almost no feeding capacity (tablets and grains), and the feeding device has certain selectivity for materials; When the mass of material is 72g, the feeding speed can reach 60.45mm/s. The study provides a reference for the research of ultrasonic feeding device.