Patent ID: 8192256

Claim:
A rotary profile dressing tool for truing and dressing a profiled abrasive grinding wheel, the rotary dressing tool comprising: a rigid, disc-shaped core having a first major surface, a second major surface, and an outermost periphery between the first and second major surfaces that defines a plane orthogonal to the axis of rotation of the tool; an abrasive rim bonded to and extending beyond the outermost periphery of the core in the plane, wherein the abrasive rim comprises a braze and diamond grains arranged in a single layer in the plane and comprising a first diamond grain and a second diamond grain, wherein the first diamond grain is spaced further away from the outermost periphery than the second diamond grain, and wherein the first diamond grain is configured to be used and consumed in a dressing operation before the second diamond grain; and said diamond grains are exposed on both sides of the plane of the tool, such that as an outermost diamond grain is consumed, a single grain adjacent it is present at a radial tip of the dressing tool and a radius of a dressing tip remains constant as the dressing tool is used.