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Patent Searching and Data


Title:
GEOMETRY-MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/118312
Kind Code:
A1
Abstract:
In order to provide a geometry-measurement device that makes it easy to calibrate the scan-direction orientation of line laser light, a distance sensor (15) that measures the distance to a reference bolt (B) attached to a workpiece (W) is supported so as to be able to rotate between the following: a first scan position (P1) in which line laser light (L) is shone in a first scan direction (S1) parallel to an X-axis; and a second scan position (P2) in which the line laser light (L) is shone in a second scan direction (S2) parallel to a Y-axis. On the basis of distances measured by the distance sensor (15) from the aforementioned scan positions (P1, P2) to a calibration surface (31), cross-sectional geometry (30A, 30B) corresponding to the part of the calibration surface (31) exposed to the line laser light (L) is computed, and the orientation of the line laser light (L) in the scan directions (S1, S2) is calibrated by rotating the distance sensor (15) in accordance with said cross-sectional geometry (30A, 30B).

Inventors:
FUJITA YOSHIHITO (JP)
NAKAMURA MIKIO (JP)
IENAGA HIROFUMI (JP)
Application Number:
PCT/JP2012/054514
Publication Date:
August 15, 2013
Filing Date:
February 24, 2012
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
FUJITA YOSHIHITO (JP)
NAKAMURA MIKIO (JP)
IENAGA HIROFUMI (JP)
International Classes:
G01B11/00
Foreign References:
JPH09145320A1997-06-06
JPH08328624A1996-12-13
JPH04237145A1992-08-25
JPH05231836A1993-09-07
JP2008246659A2008-10-16
Attorney, Agent or Firm:
MITSUISHI Toshiro et al. (JP)
Toshiro Mitsuishi (JP)
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Claims: