摘要：A innovative single-actuated ultrasonic elliptical vibrator was proposed in this study. The single-actuated ultrasonic elliptical vibrator is composed of a sandwich longitudinal piezoelectric transducer and a combined-beam horn. The combined-beam horn consists of a cylindrical metal, a straight beam, and a skew beam. Attributed to its special struc?ture, an elliptical vibration trajectory was generated at the output end of the combined-beam horn. Based on the mechanical vibration theory, the mathematical modeling of the combined-beam horn was carried out, which concluded the vibration characteristic at the output end of the combined-beam horn. The vibration characteristic of the single?actuated ultrasonic elliptical vibrator was investigated using the finite element method. An experimental set-up was built up to verify the proposed mathematical modeling of the combined-beam horn and study the vibration characteristic of the single-actuated ultrasonic elliptical vibrator prototypes. Furthermore, the ultrasonic elliptical vibration trajectory was tested at the output end of the combined-beam horn, and the experimental elliptical vibration trajectory is in good agreement with the theoretical analysis. It is expected that this type of single-actuated ultrasonic elliptical vibrator can be used in numerous power ultrasonic applications, such as ultrasonic turning, milling, planning, drilling, grinding, polish?ing, welding, and motor and other fields.
