Research on ultrasonic elliptical vibration-assisted cutting system based on double excitation

Hard and brittle alloy materials are of great importance in critical fields such as aerospace, military, and semiconductors. To address the challenges encountered in machining hard and brittle materials, a proposed solution is a dual-excitation ultrasonic elliptical vibration-assisted cutting system with adjustable amplitude. The vibration system undergoes modal simulation using finite element software to examine the effects of the length of the amplitude-variable rod and the flange position on the intrinsic frequency of the ultrasonic transducer. Additionally, harmonic response analysis is conducted to validate the design of the transducer. The impedance characteristics of the ultrasonic elliptical vibration device are analyzed, and experimental tests are performed to measure the amplitude. The results demonstrate that the resonant frequency of the ultrasonic vibration system is 19 kHz, with a maximum amplitude of 4.3 µm along the X-axis and 5.7 µm along the Z-axis, enabling the formation of an elliptical vibration trajectory.