Apparatus for automatically sharpening an edge on a moving metal strip in which a sharpening machine is arranged having sharpening heads arranged to form two contiguous bevels on the edge characterized by scanning means producing signals that scan each bevel and produce a signal from each scan as a function of the width of the bevel, the scanning means being coupled to comparative means producing signals that compare the signals derived from the respective bevels and produce an error signal as a function of the difference in the widths of the bevels, the comparator means being coupled to a programmer that produces control signals for the sharpening heads from the error signal and applies these control signals to positioning means of the sharpening heads according to a predetermined program to adjust the positions of the sharpening heads as required for reduce the error signal. (Machine-translation by Google Translate, not legally binding)
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