Title:
METHOD AND DEVICE FOR CORRECTING MEASURED LENGTH, AND METHOD OF CONTROLLING LENGTH MEASURING ROLLER
Document Type and Number:
Japanese Patent JP2014202529
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a length measurement correction method applicable even during operation of production lines.SOLUTION: A length measurement correction method includes: a detection step for detecting an object 6 under measurement being conveyed using a first stock sensor 14a and a second stock sensor 14b; a rotation number acquisition step for acquiring an actual number of rotation of a length measuring roller 9 for measuring the length of the object 6 under measurement while travelling from the first stock sensor 14a to the second stock sensor 14b; a computation step for computing a correction factor from a distance from the first stock sensor 14a to the second stock sensor 14b and the actual number of rotation acquired in the rotation number acquisition step; and a correction step for applying the correction factor to a measured length value of the object 6 under measurement obtained by the length measuring roller 9.
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Inventors:
AKIO KENGO
Application Number:
JP2013076978A
Publication Date:
October 27, 2014
Filing Date:
April 02, 2013
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
G01B5/04; B21C51/00
Attorney, Agent or Firm:
Hiroaki Sakai