Abstract
The use of a vision system for evaluating the flatness distortion of float glass under thermal treatment in a horizontal process is presented. The possibility of evaluation of such parameters as overall bow, roller wave and edge lift was analyzed for a pane of glass taken from production.
Highlights
The problem recognized in the work was the use of a vision system to assess the flatness of thermally toughened sodium-lime-silicate glass
The measured surface data of the glass pane was analyzed in order to calculate three parameters of deviations – overall bow measured in the horizontal position of the glass OBh, roller wave (RW) and the lift edge (EL)
Due to the use of image processing methods, it was possible to obtain a cloud of free surface points, and its model and values of distortions – overall bow, roller wave and edge lift
Summary
The problem recognized in the work was the use of a vision system to assess the flatness of thermally toughened sodium-lime-silicate glass. Classic method of measuring the surface flatness The EN 12150-1 standard defines the overall and local bow of glass To assess the overall bow of glass, the glass pane is placed on the long side in a vertical position on two supports.
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