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Title:
METHOD FOR MEASURING QUALITY OF STRIP-SHAPED OBJECT, METHOD FOR CONTROLLING CAMBER, QUALITY-MEASURING APPARATUS FOR STRIP-SHAPED OBJECT, ROLLING APPARATUS AND TRIMMING APPARATUS
Document Type and Number:
Japanese Patent JP2001343223
Kind Code:
A
Abstract:

To provide a quality management method, a quality management apparatus, a camber restriction method, a rolling apparatus and a trimming apparatus for strip-shaped objects whereby a quality of strip-shaped objects can be measured by using imaged images of the strip-shaped objects.

The steel strip 1 transferred by a roller 2 is imaged by television cameras 3a and 3b. A distance from each of a plurality of points of a side edge of the steel strip 1 shown in the obtained imaged image to a reference line set in a longitudinal direction of the steel strip 1 is measured. A camber, a meandering amount and a width of the steel strip 1 are calculated on the basis of the distances. A roll gap when the steel strip is rolled and the measuring of the steel strip 1 when trimmed are controlled on the basis of the camber and the measuring amount, so that generation of the camber is restricted.


Inventors:
Ishihara, Fumisato
Kurihara, Shigeyuki
Nogami, Shinichi
Horikawa, Hideo
Application Number:
JP2000000339677
Publication Date:
December 14, 2001
Filing Date:
November 07, 2000
Export Citation:
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Assignee:
SUMITOMO METAL IND LTD
International Classes:
G01B11/00; B21B37/00; B21B37/30; B21B37/68; B21C47/34; B21C51/00; B23D19/06; B23D36/00; G01B11/02; G01B11/04; G01B11/24; G01B11/245; G01B11/30; G01N21/88; G01N21/89; B21B15/00; B21B38/00; (IPC1-7): G01B11/24; B21B37/00; B21B37/30; B21C51/00; G01B11/00; G01B11/04; G01B11/255; G01B11/30
Domestic Patent References:
1997-11-28
1995-01-20
1997-11-28
1996-04-12
1977-04-07
1986-03-06