Patent ID: 6110031
Filing Date: 2000-08-29
Classification: B24D

Abstract:
A tool for cutting and grinding comprising:an abrasive work surface having a cirumferential dimension orthogonal to an axial dimension;a plurality of first regions spaced in the circumferential dimension and the axial dimension on the abrasive work surface; anda plurality of second regions spaced in the circumferential dimension and the axial dimension on the abrasive work surface, wherein each first region is more wear resistant than each second region such that each second region will wear faster than each first region;wherein the work surface is divided in the axial dimension into a plurality of layers extending in the circumferential dimension and orthogonal to the axial dimension; wherein the plurality of layers include a first exterior layer and a second exterior layer and at least one inner layer located between the first exterior layer and the second exterior layer; wherein the at least one inner layer is divided along the circumferential direction into at least one inner layer is divided along the circumferential direction into at least one first region and at least one second region.