Top 15 Fantastic Experience Of This Year's Piezoelectric Ceramics for Ultrasonic Generator

Ultrasonic generator and mechanical resonance frequency have a resonance working range about capacitive force sensor. Take 20 kHz as an example, the working range of resonance for piezoelectric sensor buy online is generally set to 20±0.3kHz, and the piezoelectric circuit  welding machine can work normally in this range. When making each welding head, the resonance frequency will be adjusted, so the error of resonance frequency and design frequency should be less than 0.1 kHz. At present, ultrasonic metal welding frequency for miniature piezo block is usually 20 kHz, in fact, the frequency of the welding head is generally controlled at 19.90 ~ 20.10 kHz, the error is less than 5 ‰. The pzt ceramic welding head and the ultrasonic horn are all designed as a half-wavelength resonator with a working frequency. Under the working condition, the amplitude of the two end faces is the largest and the stress is the smallest in the  piezo motion sensor . The node corresponding to the middle position has zero amplitude and the maximum stress. The location of the node is generally designed as a fixed bit, but the thickness of the usual fixed bit design is greater than 3mm, or the groove is fixed, so the fixed bit is not necessarily zero amplitude,This will cause some noise and part of the energy loss, it is usually for the rubber ring with rubber isolation with other components, or the use of piezoelectric technology vibration damping structure design shielding, energy loss in the design of amplitude parameters should be fully considered. Rubber rings are called soft fixtures, and the design of the vibration reduction structure is generally called hard fix. About ultrasonic metal welding, the hard-fixed structure is usually adopted, and the hard-fixed structure also has the end-face fixed mode. Ultrasonic metal welding is usually designed on the surface of the welding position, the base design of the surface textured, textured design is designed to prevent the sliding metal parts, as far as possible the energy transmitted to the welding position. Rectangle design generally includes square, diamond, stripe, the size and depth of the textured according to the specific owns requirements of the welding material to determine.