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Title:
METHOD AND DEVICE FOR MANUFACTURING WELDED H-SHAPED STEEL
Document Type and Number:
Japanese Patent JP2011013160
Kind Code:
A
Abstract:

To provide a method and a device for manufacturing welded H-shaped steel with highly-accurate squareness.

By using a device including a measuring device body 11a having a U-shape in a lateral view whose inner wall surface is arranged oppositely to each outer surface of upper and lower flanges 1fu, 1fd and one surface of a web 1m of a conveyed welded H-shaped steel 1, at least two laser range finders 3a-3f arranged on the inner wall surface of the measuring device body 11a oppositely to each surface, and a computing unit 11c for determining squareness based on a measured value of the same cross section of the welded H-shaped steel 1 measured by the laser range finders 3a-3f, each inclination of each outer surface of the upper and lower flanges 1fu, 1fd and one surface of the web 1m of the welded H-shaped steel 1 conveyed unrestrictedly is measured downstream of a cutting machine 12 for cutting the welded H-shaped steel 1 to have a product length, and squareness is calculated from each inclination. A calculated result is fed back to thereby reform the welded and bonded H-shaped steel. By being reformed based on the squareness measured highly accurately, a product having excellent squareness can be manufactured.


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Inventors:
OKUBO HIROYUKI
YOKOYAMA YUTAKA
Application Number:
JP2009159232A
Publication Date:
January 20, 2011
Filing Date:
July 03, 2009
Export Citation:
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Assignee:
SUMITOMO METAL IND
International Classes:
G01B11/26
Domestic Patent References:
JPS63177011A1988-07-21
JPH06281429A1994-10-07
JPH04148816A1992-05-21
JPH06174436A1994-06-24
JPS6372428A1988-04-02
JP2003315027A2003-11-06
JPH0727518A1995-01-27
JPS63177011A1988-07-21
JPH06281429A1994-10-07
JPH04148816A1992-05-21
Attorney, Agent or Firm:
Tetsuya Mizogami
Yoshinori Iwahara
Susumu Yamamoto



 
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