| Citation: | ZHANG Mingliang, ZHANG Deyuan, LIU Jiajia, et al. Mechanism and experiment of high-speed ultrasonic elliptical vibration milling of thin-walled titanium alloy parts[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(8): 1606-1612. doi: 10.13700/j.bh.1001-5965.2018.0712(in Chinese)
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A high-speed ultrasonic elliptical vibration milling method is proposed for poor processing quality and low processing efficiency in milling of thin-walled titanium alloy parts in aerospace. Firstly, high-speed ultrasonic elliptic vibration milling combines high-speed ultrasonic vibration cutting concept with milling. A high-frequency intermittent cutting where the cutting tool tip moves in accordance with the elliptical trajectory can effectively improve the quality of machining and break through the limitations of the ultrasonic vibration processing on the critical speed. Then, the separation principle of the process is analyzed, and a self-developed ultrasonic vibration milling device is used in the experiment with thin-walled titanium alloy parts. The experimental results show that, compared to the common milling processing, the cutting force reduction and the relieving amount reduction for high-speed ultrasonic elliptical vibration milling method are both about 20% to 30%, and meanwhile the surface defects and roughness are cut down.
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