Improvement of a Fast Tool Control unit for cutting force measurement in diamond turning of micro-lens array
by Young Jin Noh, Yoshikazu Arai, Wei Gao
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 3, No. 3, 2009

Abstract: This paper describes a Fast Tool Control (FTC) unit integrated with a piezoelectric force sensor, which is designed for in-process measurement of the cutting force during the fabrication of micro-lens array. The piezoelectric force sensor integrated with the FTC unit is designed to have a stroke of 48 μm, a bandwidth of 7837 Hz and a stiffness of 34.67 N/μm. The micro-lens array is fabricated with a length of 190 μm and a depth of 5.2 μm on the oxygen-free copper surface and the Ni–P plating surface. The measured cutting forces of the oxygen-free copper surface and the Ni–P plating surface were 0.54 N and 0.92 N, respectively. The cutting tool wear could be detected through monitoring the cutting force by developed FTC unit integrated with a piezoelectric force sensor.

Online publication date: Sat, 20-Jun-2009

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