Patent ID: 6159074
Filing Date: 2000-12-12
Classification: B24B,G01B

Abstract:
A grinding machine for grinding a roll, the grinding machine comprising:a roll support configured to receive a roll so that the roll is rotatable around its longitudinal axis;a grinding wheel having a grinding surface around the circumference thereof, with the grinding surface positionable in contact with the roll received on the roll support, with at least one of the grinding wheel and the roll support moveable relative to the other of the grinding wheel and the roll support so that the grinding surface is moveable between opposite ends of the roll;a caliper configured to measure a diameter of the roll, with at least one of the caliper and the roll support moveable relative to the other of the caliper and the roll support so that the caliper can measure the diameter of the roll between the opposite ends thereof, wherein the caliper comprises:a frame;a linear guide connected to the frame;a pair of measuring arms connected to the linear guide in spaced relation, with the linear guide configured to enable each measuring arm to simultaneously move relative to the linear guide and parallel to the longitudinal axis of the linear guide; anda linear motor connected between the frame and the pair of measuring arms, with the linear motor configured to supply to the pair of measuring arms a motive force which causes the pair of measuring arms to simultaneously move relative to the linear guide and parallel to the longitudinal axis of the linear guide, with the linear motor configured to terminate the supply of motive force to at least one of the measuring arms in response to the at least one measuring arm contacting the roll with a force in excess of a predetermined force.