RESEARCH ON THE TRANSDUCER OF THE ULTRASONIC ELLIPTICAL VIBRATION CUTTING BASED ON THE FINITE ELEMENT METHOD

摘要

The ultrasonic elliptical vibration cutting has been successfully applied to precision cutting due to its superior performances, such as low cutting force, high quality surface finish and long tool life. This paper presents an asymmetrical structural model of the ultrasonic elliptical vibration transducer with only the longitudinal excitation through analyzing the model of the longitudinal vibration transducer. Based on the modal and static analysis of the finite element method, the various parameters of the model are modified to meet the needs of the vibration modality and the inherent frequency. A system of the ultrasonic elliptical vibration cutting with the single longitudinal excitation is developed. The surface finish with high quality can be achieved by the ultrasonic elliptical vibration cutting with the PCD tools. It is proved that the ultrasonic elliptical vibration transducer can be designed rationally with the finite element method and the ultrasonic elliptical vibration cutting can effectively improve the quality of the surface finish.