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IJAT Vol.8 No.6 pp. 827-836
doi: 10.20965/ijat.2014.p0827
(2014)

Paper:

Sensorless Tool Stiffness Monitoring in Buffing

Ryo Koike*, Ryo Kumakura*, Takashi Arai**,
Eishiro Uchishiba**, Makoto Murakami**, Takahisa Sagara**,
and Yasuhiro Kakinuma*

*Department of System Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan

**Yokohama Plant, Nikon Corporation, 471 Nagaodai-cho, Sakae-ku, Yokohama, Kanagawa 244-8533, Japan

Received:
August 22, 2014
Accepted:
October 19, 2014
Published:
November 5, 2014
Keywords:
buffing, force estimation, process monitoring, contact stiffness, force control
Abstract
In current practice, the buffing process required to finish the surface of mechanical parts is performed manually by a technical expert as it requires a delicate adjustment of the buffing force. The automation of this process is desirable in an effort to shorten the process time and reduce labor cost. To automate the buffing process, a beneficial process monitoring technique that supervises the buffing tool conditions in real time must be developed. From a practical perspective, an observer technique that does not require additional sensors would be most suitable for monitoring the tool operating condition. The authors propose a technique that estimates the buffing tool stiffness based on a disturbance observer. The validity of the proposed method as a buffing tool condition monitoring technique is verified through numerical simulations and experiments.
Cite this article as:
R. Koike, R. Kumakura, T. Arai, E. Uchishiba, M. Murakami, T. Sagara, and Y. Kakinuma, “Sensorless Tool Stiffness Monitoring in Buffing,” Int. J. Automation Technol., Vol.8 No.6, pp. 827-836, 2014.
Data files:
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