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SYSTEM AND METHOD FOR MEASURING LENGTH OF GAP BETWEEN ROTATING TOOL AND WORKPIECE achieved

Foreign code F120006859
File No. S2010-1051-C0
Posted date Sep 20, 2012
Country WIPO
International application number 2011JP064410
International publication number WO 2012/014609
Date of international filing Jun 23, 2011
Date of international publication Feb 2, 2012
Priority data
  • P2010-170670 (Jul 29, 2010) JP
Title SYSTEM AND METHOD FOR MEASURING LENGTH OF GAP BETWEEN ROTATING TOOL AND WORKPIECE achieved
Abstract

The present invention is to generate a pulsed laser beam having a width greater than the gap between a rotating tool and a workpiece opposed thereto, and then irradiate the gap with the generated laser beam while the optical axis thereof is tilted relative to a workpiece plane. The pulsed laser beam has one lased-pulse period per one revolution or an integer number of revolutions of the rotating tool and is directed in the same angle range relative to the rotating tool within the ON duration of the lased pulse. The light which has irradiated the gap and has not been interrupted but diffracted by the gap is detected on a light-receiving sensor to measure the length of the gap.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • KYUSHU INSTITUTE OF TECHNOLOGY,
  • KHAJORNRUNGRUANG, PANART,
  • KIMURA, KEIICHI
  • Inventor
  • KHAJORNRUNGRUANG, PANART,
  • KIMURA, KEIICHI
IPC(International Patent Classification)
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