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<p>In order to improve the machinability of TC4 titanium alloy, reduce the cutting force and cutting heat, and extend the tool life, a milling processing method of composite longitudinal torsional ultrasonic vibration of microtexture tools is proposed, and the machining mechanism is analyzed to obtain the mechanical model for composite machining. Based on the measurement, the optimal range of amplitude parameters was determined, and the effects of ultrasonic amplitude, tool microtexture distance, and cutting speed on the machining of titanium alloys in terms of force, heat, and surface quality were studied by a one-factor experiments carried out and compared with ultrasonic milling, microtexture milling, and conventional milling. The results show that the experimental results are consistent with the theory, and the cutting speed of 75&#xa0;m/min, the texture distance of 110&#xa0;µm, and the amplitude of 4&#xa0;µm have the best effect, which can effectively reduce cutting wear and significantly improve the cutting machining performance of titanium alloys.</p>

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Experimental study of ultrasonic vibration-assisted milling of titanium alloys with longitudinal torsion of microstructure tools

  • 期刊论文

  • 发表日期：

    2025年5月5日

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  • Meiyi Wu,
  • Qiulin Niu,
  • Jingyi Gao,
  • Zhilong Xie,
  • Yu Zhang,
  • Junwei Tan

摘要

In order to improve the machinability of TC4 titanium alloy, reduce the cutting force and cutting heat, and extend the tool life, a milling processing method of composite longitudinal torsional ultrasonic vibration of microtexture tools is proposed, and the machining mechanism is analyzed to obtain the mechanical model for composite machining. Based on the measurement, the optimal range of amplitude parameters was determined, and the effects of ultrasonic amplitude, tool microtexture distance, and cutting speed on the machining of titanium alloys in terms of force, heat, and surface quality were studied by a one-factor experiments carried out and compared with ultrasonic milling, microtexture milling, and conventional milling. The results show that the experimental results are consistent with the theory, and the cutting speed of 75 m/min, the texture distance of 110 µm, and the amplitude of 4 µm have the best effect, which can effectively reduce cutting wear and significantly improve the cutting machining performance of titanium alloys.