A METHOD OF NON-CONTACT MEASURING OF OUTER DIMENSIONS OF CROSS SECTIONS OF METALLURGICAL ROD MATERIAL AND A MODULAR FRAME FOR PERFORMING THEREOF

摘要

A method of continuous non-contact outer dimensions measuring of cross sections of metallurgical rod material consists in the following technical solution: at least three laser beams rotating in the same direction or oscillating laser beams of commonly calibrated and synchronized scanners evenly surround rod material so that the centres of the beams are aimed at the axis of the rod material repeatedly measuring the distance between the beginning of the coordinate systems of scanners and the surface of the scanned rod material; then the group of simultaneously measured distances is converted to point coordinates of the common coordinate system; using the groups of the common coordinate system, diameters and centres of gravity of the cross section of the rod material in the scanning plane are calculated; based on approximation of changes of the centres of gravity of the rod material in time, at least one function of the cross movement is determined during profile scanning and using the function/s of the cross movement of the rod material during one beam deflecting cycle the coordinates are converted of the measured points of the corresponding profile to eliminate the cross movement and offsetting of rod material during one scanning sequence in order to obtain the actual profile of rod material. The basis of the modular frame fitted with at least one scanner and wiring according to the invention consists in it having a polygonal shape with vertexes formed by at least one connecting elbow and at least two anchoring elbows, whereas these connecting elbows and anchoring elbows are connected by connecting arms and these arms are fitted (using sleeve fixtures) with protective housings for the scanners and the modular frame carries a distribution system for at least one cooling medium.