Abstract
Based on the principle of laser-linear array charge-coupled device (CCD) detection technology, a high accuracy nontouch on-line system for monitoring roller wear is brought forward. The principle and composition of the laser-linear array CCD detection system and the operation process were expatiated. Aiming at the errors of the roller’s axes shifting during the detection process, compensating steps were adopted from the vertical and the parallel direction to the detection surface. This effectively enhanced the accuracy of the detection system. Experiments proved that the accuracy of the system could reach the demand of the practical production process. It provides a new method for high speed, accuracy, and automatic on-line monitoring of roller wear. r shapegear array CCD detection. A simulation-software program is also compiled based on this principle. By using this program, the I/O signals’s data for this system is gained and the detection curves can be drawn automatically.
Highlights
The roller is an important metallurgy tool in the rolling mill and the surface of a roller directly affects the quantity of the rolling product
After the surface of a whole roller was scanned by this method, a series of reflected positions are gained on charge-coupled device (CCD) and a group of roller radii is figured out
As it can be seen, R is the radius of roller,α is the incident angle, L is the distance between the roller center and the CCD detecting surface, S is the displacement of incident ray from the intersection of the roller center and the CCD detecting surface, H is the distance between incident ray and the point of reflected ray on CCD
Summary
The roller is an important metallurgy tool in the rolling mill and the surface of a roller directly affects the quantity of the rolling product. The roller’s surface wears down and its shape changes. This results in the difficulty of controlling the shape and the thickness of a board. Examining the profile of a working roller between the intervals of rolling is called on-line detection for roller wear.[1,2] The study of on-line detection roller wear is very important for selecting the grinding time, reducing the exchange frequency of rollers, improving the quality of the product, and realizing on-line grinding rollers.[3,4]. If an incident ray leans to the surface of a worn roller, the angle of the reflected ray will be changed following the difference of the roller radius.
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