Roll grinding system

Claim 1

Portable apparatus for accurate regrinding of a rubber-like cylindrical surface of a roll being rotated at its work station, comprising a pair of closed loop abrasive belts extending in spaced parallel planes, means to drive the belts, a pair of sets of means in supporting contact with the respective belts, a platform, means mounting the platform to move parallel to the axis of rotation of a roll being reground at its work station, means mounting the platform to move toward and from a roll being so reground, means to hold the platform at a fixed distance from a roll while the platform is moved parallel to the roll's axis, means mounted on the platform to support said sets of belt supporting means, said platform mounted support means including adjustment means to bring said sets of means into tight engagement with the belts, to present a substantially straight length of each belt for substantially tangential grinding contact with the surface of a roll, and to adjust the angle of each said straight length and thereby adjust the position of its contact along a roll's periphery, and said platform mounted support means also including means operable after such adjustment to hold said sets of means in fixed positions relative to the platform during regrinding of a roll, whereby the belts are held at a fixed spacing from a roll for accuracy of regrinding, and whereby, where clearances are limited at the ends of a roll, one belt may grind to one end of the roll and the other belt to the other end of the roll.