Patent ID: 6084194
Filing Date: 2000-07-04
Classification: B23H

Abstract:
A method for electric-discharge texturing the surface of a roll having first and second ends connected by a center portion, the method comprising:rotatably supporting a roll about a roll axis;providing a head movable in a direction parallel to the roll axis;providing a plurality of electrodes mounted on the head, each of the plurality of electrodes movable in a direction transverse to the roll axis to maintain a desired spacing with respect to the surface of the roll;positioning each of the electrodes at a sparking position along the direction transverse to the roll axis to effect sparking with the surface of the roll;moving the head back and forth across the roll surface between the first and second roll ends along the direction parallel to the roll axis such that each of the electrodes traverse across the entire surface of the roll, wherein moving the head back and forth across the roll surface between the first and second roll ends includes moving the head past the first and second roll ends such that the electrodes pass off the first and second roll ends causing the roll profile deformation to be consistent across the entire roll surface as each electrode effects the same amount of sparking at each point across the roll surface; andpositioning each of the electrodes at a retracted position along the direction transverse to the roll axis as each of the electrodes passes off the first and second ends of the roll.