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Jinghang Liu


Micro/Nano Manufacturing

  • micro/nano features fabrication

  • fundamentals study

  • new process development

  • process monitoring and automation

  • measurement and evaluation

  • devices and equipment


Ultrasonic Vibration-assisted Machining

Jinghang Liu


  • diamond cutting

  • ultrasonic vibration cutting

  • software development

  • piezoelectric material

  • precision manufacturing


Diamond cutting is superior to fabricate complex surface of high accuracy and good quality. Vibration-assisted cutting technique is used to further improve the machining performance of conventional diamond cutting by adding vibrations to standard cutting motions. The one-dimensional (1D) linear and two-dimensional (2D) elliptical vibration cutting has been proven to offer superior performance over conventional diamond cutting process. However, massive production of ferrous and hard-to-machine materials by vibration-assisted diamond cutting with industry scale is still unachievable due to severe tool wear. To make diamond cutting a mass production available for manufacturing of cost-effective surface on various materials, high efficiency diamond cutting technology assisted by multi-degrees of freedom vibration will be developed in this research. The system will be used to machine complex mirror surfaces of ferrous and hard-to-machine materials by utilizing turning process.

The development of software platform for experimental data acquisition and control signal generation is presented in this paper. The presented methodology is hoped to be an efficient diamond cutting technique resulting in a significant reduction of cutting forces and tool wear, improvement of surface quality, and massive extension of tool life.


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