<p>In order to delay the tool wear in the drilling process of carbon fiber reinforced plastic (CFRP)/titanium alloy layered material, ultrasonic vibration–assisted drilling (UVAD) technology was used to drill holes. Firstly, the kinematics characteristics of CFRP/titanium alloy layered material UVAD were analyzed. With the increase of amplitude, the average cutting thickness of drilling presented a downward trend. Secondly, the cutting speed difference of UVAD cutting is reduced with the increase of the given spindle speed. However, it is increased as the amplitude increases; for example, when the amplitude increases from 0.001 to 0.04&#xa0;mm, the cutting speed difference is increased by about six times. Finally, the results show that with the increase of amplitude, the tool wear shows a downward trend; when the amplitude is equal to 3.5&#xa0;μm, for example, taking the drilling of 20 holes, its tool wear value decreased by about 27.6% compared with the amplitude of 2.5&#xa0;μm; UVAD wear is adhesion wear and slight oxidation wear. The wear mechanism of conventional drilling (CD) is abrasive wear, adhesion wear, and oxidation wear. Ultrasonic vibration–assisted drilling is helpful to extend the service life of the tool.</p>

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Wear characteristics of ultrasonic vibration–assisted drilling tools for CFRP/titanium alloy laminated materials

  • Zhibin Feng,
  • Feng Jiao

摘要

In order to delay the tool wear in the drilling process of carbon fiber reinforced plastic (CFRP)/titanium alloy layered material, ultrasonic vibration–assisted drilling (UVAD) technology was used to drill holes. Firstly, the kinematics characteristics of CFRP/titanium alloy layered material UVAD were analyzed. With the increase of amplitude, the average cutting thickness of drilling presented a downward trend. Secondly, the cutting speed difference of UVAD cutting is reduced with the increase of the given spindle speed. However, it is increased as the amplitude increases; for example, when the amplitude increases from 0.001 to 0.04 mm, the cutting speed difference is increased by about six times. Finally, the results show that with the increase of amplitude, the tool wear shows a downward trend; when the amplitude is equal to 3.5 μm, for example, taking the drilling of 20 holes, its tool wear value decreased by about 27.6% compared with the amplitude of 2.5 μm; UVAD wear is adhesion wear and slight oxidation wear. The wear mechanism of conventional drilling (CD) is abrasive wear, adhesion wear, and oxidation wear. Ultrasonic vibration–assisted drilling is helpful to extend the service life of the tool.