Patent ID: 7472490

Claim:
A shape-measuring assembly for a roll grinding machine capable of supporting a workpiece roll in at least two spaced bearings defining the axis of the roll, said shape-measuring assembly configured for measuring the shape of the generally cylindrical surface of the roll mounted in the bearings, said shape-measuring assembly comprising: a movable support frame ( 3 ) spaced from the roll axis and movable parallel to the roll axis over a reference plane being parallel to the roll axis; a first arm carriage ( 2 ) supported within the support frame and automatically movable toward and away from the reference plane; a first arm ( 1 ) supported from the arm carriage extending away from the frame, said arm extending over the roll axis; a first fixed sensor probe ( 27 ) mounted near the distal end of the first arm for sensing the position of the surface of the roll; a first rail ( 12 ) mounted in the first arm forming a first acute angle with the reference plane; a first positionable sensor carriage ( 29 ) mounted to be guided along the first rail; a first positional sensor probe mounted to the first sensor carriage for sensing the position of the surface of the roll; means for interconnecting the first sensor carriage and the arm carriage such that as the arm is moved by the arm carriage toward the roll axis, the first sensor carriage is automatically moved in a first path toward the roll axis; a second rail ( 23 ) mounted in the first arm forming a second acute angle with the reference plane; a second sensor carriage ( 28 ) mounted to be guided along the second rail; a second sensor probe mounted to the second sensor carriage for sensing the position of the surface of the roll; means for interconnecting the second sensor carriage and the arm carriage such that as the arm is moved by the arm carriage toward the roll axis, the second sensor carriage is automatically moved in a second path toward the roll axis; a second arm ( 50 ) supported from a second arm carriage extending away from the frame, said second arm extending under the roll axis; and a second fixed sensor probe ( 54 ) mounted near the distal end of the second arm for sensing the position of the surface of the roll, whereby the first fixed, second fixed, first positionable and second positionable sensor probes can determine the position of at least three points on the surface of the roll, thus defining a circle on the surface of the roll including the location of the center of the circle and the diameter of the circle.