OPTICAL PROFILOMETRES FOR THE ONLINE INSPECTION OF ROLLERS IN TEXTILEAND OTHER MACHINES

Defects in products such as textile, paper of film are often caused by defects, dynamic changes or wear of machine elements. On this backgro und it was the objective of the reported study to investigate the pote ntial of low-cost optical profilometres for the on-line inspection of rotating cylindrical bodies. Sensors after the triangulation principle proved to be powerful for the quantitative characterization of form a nd surface or rollers, while fibre-optical sensors were advantageous f or the detection of local defects on the roller surfaces. Based on the se results a specialized sensor for the industrial inspection of calen ders was developed.