An online roll profile measuring Sy

An online roll profile measuring System for measuring a roll
profile during rolling without the effect of an error caused by the change in rolling condition. The System includes a roll
grinder unit and a grinding wheel traversing device. The roll
grinder unit has a rotary grinding wheel positioned opposite
to a work roll for grinding the work roll, a grinding wheel
driving device for rotating the rotary grinding wheel, and a
grinding wheel feeding device for pressing the rotary grind
ing wheel to the work roll. The grinding wheel traversing
device moves the roll grinder unit in the axial direction of
the work roll relative to a guide rail frame fixed on a housing holding the work roll. A roll profile is calculated, Simulta
neously with grinding of the work roll using the rotary
grinding wheel, on the basis of movement amounts of the
grinding wheel feeding device and the grinding wheel
traversing device. In this System, the amount of displace
ment of the housing due to the change in rolling condition
during measurement of the roll profile is measured by a roll
position measuring device, and the roll profile measured
during rolling is corrected on the basis of the amount of the
displacement of the housing by an information processor.