Flatness measuring device for strip-shaped rolled material

摘要

A flatness measuring device for thin-gage strip in cold rolling mills comprises a rotating measuring roller (13) is arranged transversely to the strip travel direction (a) and across the strip width (b) and detects the rolled strip (6), with at least one surface groove (22) extending over the entire roller length (21), as well as a scanner (23) with one or more light beams (L4) for scanning strip wavinesses (24) that may occur over the upper section (31) of the surface groove (22) of the measuring roller (13) on account of a differing strip tension distribution over the strip width (b), which section (31) travels, on account of the rotational movement of the roller (13), over the entire length of the roller (13).