Online detection method for the spatial position of roller axis based on machine vision

Abstract

The invention provides an online detection method for the spatial position of roller axis based on machine vision. The online detection method is capable of obtaining the moving trajectory of the central rotation axis of a roller so as to realize the online precision measurement of the central rotation axis of the roller. The method comprises the following steps: building a binocular stereo vision three-coordinate measuring model; choosing one point from the end face of the roller as the monitoring point for the end face of the roller; according to the created binocular stereo vision three-coordinate measuring model, obtaining the three-dimensional spatial coordinate of the monitoring point for the end face of the roller; during the operation of a rolling mill, obtaining the three-dimensional spatial coordinates of the monitoring point for the end face of the roller at different positions along with the rotation of the roller; according to the obtained three-dimensional spatial coordinates of the monitoring point for the end face of the roller at different positions along with the rotation of the roller and based on the stereo geometrical characteristics of the roller, obtaining the moving trajectory of the central rotation axis of the roller. The online detection method is suitable for the detection of key parameters of rolling mill associated equipment.

Description

technical field [0001] The invention relates to the technical field of detection of key parameters of rolling mill equipment, in particular to an online detection method for the spatial position of a roll axis based on machine vision. Background technique [0002] The rolling mill is one of the most important functional equipment of metallurgical equipment. The spatial position of the roll affects the functional accuracy of the rolling mill. The spatial position of the roll often deviates with the increase of service time, resulting in the angle between the central axes of the upper and lower rolls, increased equipment chatter, and product quality. issues such as decline. At present, there is no online detection device for the spatial position of the roll axis in the working state of the rolling mill in the metallurgical production field. In industrial production, the laser tracker is mainly used to detect the spatial position accuracy of the roll. The detection method is of...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an online detection method of the spatial position of the roll axis based on machine vision, so as to solve the problems of equipment and product quality caused by the difficulty of online detection of the spatial position of the roll in the prior art

Images