METHOD FOR CLASSIFYING METAL TUBES

摘要

A method or classifying metal tubes in which the measuring of the eccentricity over the entire length of the tube is provided, and in which the classification occurs on the basis of the length of the tube portions which have eccentricity either higher or lower than one or more eccentricity thresholds.

主权项

1. A method for classifying a metal tube having a total length Ltot, wherein there are provided
a detection system for detecting an eccentricity of a tube, adapted to measure the eccentricity of the tube along its entire total length Ltot, a relative movement being provided between the tube and the detection system, and a processor adapted to process data obtained from said detection system,in said method being defined:
a first eccentricity threshold S1, a first reference length L1 correlated to said first eccentricity threshold S1, the method comprising the steps of:a) measuring the eccentricity of the tube along the entire total length Ltot, by means of the detection system, during said relative movement,b) executing a first sum of lengths of tube portions having eccentricity either higher than or equal to the first eccentricity threshold S1 by means of the processor,c) assigning a first class to the tube if a value of said first sum is lower than said first reference length L1, otherwise assigning a second class to the tube.