SHAPE MEASURING APPARATUS AND SHAPE MEASURING METHOD - NIPPON STEEL & SUMITOMO METAL CORP

Title:

SHAPE MEASURING APPARATUS AND SHAPE MEASURING METHOD

Document Type and Number:

WIPO Patent Application WO/2018/016102

Kind Code:

A1

Abstract:

[Problem] To provide a shape measuring apparatus that is capable of detecting very small uneven roughness over the entire surface and the entire width of a to-be-measured object at a high speed. [Solution] This shape measuring apparatus is provided with: a light source that obliquely emits a linear beam to the surface of a moving band body from the moving-direction upstream side of the band body; a screen on which a reflected beam of the linear beam on the surface of the band body is projected; an imaging unit that images the reflected beam of the linear beam projected on the screen; and an arithmetic processing unit that acquires the distribution of the band body surface roughness on the basis of the beam band width distribution of the reflected beam of the linear beam projected on the screen, wherein the incident angle of the light from the light source with respect to the band body is set according to the target surface roughness of the band body surface.

Inventors:

AKAGI TOSHIO (JP)
KONNO YUSUKE (JP)
HIBI ATSUHIRO (JP)
FURUYA NOBUHIRO (JP)
SONODA TAKAYUKI (JP)
NAKAZAKI AKIHITO (JP)

Application Number:

PCT/JP2017/001720

Publication Date:

January 25, 2018

Filing Date:

January 19, 2017

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

G01B11/30; G01N21/892

Foreign References:

JP2004184397A	2004-07-02
JP2002139447A	2002-05-17
JPH06201347A	1994-07-19
US5521692A	1996-05-28
JP2009111230A	2009-05-21

Other References: