| Citation: | ZHAO Ganlin, FENG Pingfa, ZHANG Jianfuet al. Simulation and experimental study on ultrasonic vibration drilling process characteristics of titanium alloy[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(8): 1597-1605. doi: 10.13700/j.bh.1001-5965.2018.0709(in Chinese)
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Issues of high cutting force, high cutting temperature and bad machining quality in the case of conventional titanium alloy drilling are widespread. Thus a study of ultrasonic vibration drilling process characteristics of titanium alloy was carried out. Firstly, the characteristics of both interrupted cutting and high-speed cutting were analyzed using the equation of motion of ultrasonic vibration drilling. Secondly, Deform-3D was then employed to simulate the axial force, torque and cutting temperature of titanium alloy ultrasonic vibration drilling. In the final step, ultrasonic vibration drilling of titanium alloy was conducted. This aided the investigation of relative change in cutting forces, torque as well as exit burrs of ultrasonic vibration drilling in comparison to conventional drilling. The results show that ultrasonic vibration drilling of titanium alloy can reduce the axial force by about 20%, the torque by about 40% and the average cutting temperature by about 50%. And the processing quality by ultrasonic vibration drilling of titanium alloy is superior when compared to conventional drilling. The longitudinal-torsional composite ultrasonic vibration drilling of titanium alloy is more effective than one-dimensional longitudinal ultrasonic vibration drilling as it has much greater influence in the reduction of axial force, torque and cutting temperature, which shows superior drilling processing characteristics.
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