| Indirect cutting force measurement in the micro end-milling process based on frequency analysis of sensor signals
Bong-Cheol Shin/Seok-Jae Ha/Myeong-Woo Cho/Tae-Il Seo/Gil-Sang Yoon/Young-Moo Heo
The Journal of Mechanical Science and Technology, vol. 24, no. 1, pp.165-168, 2010
Abstract : In this study, a useful indirect cutting force measurement method using an acceleration sensor and current hall sensors is proposed. A
series of experiments was performed on a precise micro machining stage with a high-speed spindle. A three-axis acceleration sensor was
installed on the spindle head, and current hall sensors were connected to the motor current inlet cables. From the results obtained, the
correlations of the tool teeth rotation and current amplitude showed a linearity of 92.0% precision for hall sensor signals, and 98.0% precision
for acceleration sensor signals. Even though the results using the acceleration sensor showed better linearity than those of the current
hall sensors, the signals can be easily affected by chattering, spindle vibration, and other external disturbances. From this perspective,
the current hall sensor can provide more robust results.
Keyword : Micro end-milling; Indirect cutting force measurement; Frequency analysis; Sensor system |
