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<p>In this paper, a finite element model of axial ultrasonic vibration-assisted micro drilling is established through numerical simulation. The effects of different heat treatment processes (T3, T351, and T6) and machining parameters (amplitude, feed rate, and spindle speed) on the performance of axial ultrasonic vibration-assisted drilling are thoroughly examined. The results show that the axial force and torque follow the order T351 &gt; T6 &gt; T3 under different drilling parameters. The drilling temperature decreases with the increase of amplitude and increases with the increase of feed rate and spindle speed, and the drilling temperature of Al2024-T351 is lower than that of the other two heat treatment processes. The residual stresses of Al2024 under the three heat treatment states exhibit a "spoon shape" pattern. Under different heat treatment conditions, the variation trend of the exit burr height is the same.</p> Graphical Abstracts <p></p>

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Research on the characteristics of ultrasonic vibration micro drilling machining of 2024 aluminum alloy under different heat treatment states

  • 期刊论文

  • 发表日期：

    2025年5月2日

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  • Jiayuan Luo,
  • Zhicheng Tang,
  • Cong Gao

摘要

In this paper, a finite element model of axial ultrasonic vibration-assisted micro drilling is established through numerical simulation. The effects of different heat treatment processes (T3, T351, and T6) and machining parameters (amplitude, feed rate, and spindle speed) on the performance of axial ultrasonic vibration-assisted drilling are thoroughly examined. The results show that the axial force and torque follow the order T351 > T6 > T3 under different drilling parameters. The drilling temperature decreases with the increase of amplitude and increases with the increase of feed rate and spindle speed, and the drilling temperature of Al2024-T351 is lower than that of the other two heat treatment processes. The residual stresses of Al2024 under the three heat treatment states exhibit a "spoon shape" pattern. Under different heat treatment conditions, the variation trend of the exit burr height is the same.

Graphical Abstracts