Abstract
Nowadays with the rise of laser measure technique, the laser tracker is applied to measure and calibrate the spatial position of mill equipment in cold and hot rolling mills. How to analyze the spatial state of mill housing with the amount measured data via laser tracker is the key to the problem. However, there is still no effective model to study the spatial position of mill housing. In this paper, a comprehensive mathematical model of the spatial position of 4-high mill housing was established. The least square method was used to fit the liner plates. It can be used to calculate the spatial distance and inclination relationship of each liner plate. The model was validated by the measured data of the 4-high mill housing via laser tracker. The calculated results of the model were consistent with those of the spatial analysis software, and the relative deviation was less than 0.01%. The median and opening value and inclination state of the mill liner plates were further studied. The ability and efficiency of data analysis could be improved based on this model, which has good prospect in on-site application.
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