Rotary Dresser With Variable Diameter Roll For Uniform Grain Action

The patent applies local quality by varying the distribution density of diamond abrasive grains at different axial positions on the roll. Specifically, the distribution density is made smaller at both axial end portions and larger at the axial center portion, so that the number of diamond abrasive grains acting on the grinding wheel per rotation is substantially equal across all axial positions. This resolves the contradiction by locally adjusting grain density to achieve uniform dressing resistance throughout the roll length.

The patent applies local quality by making the distribution density of diamond abrasive grains smaller at the axial end portions where the circumferential length is larger. This ensures that even though more grains are present in the circumferential direction at these portions, the reduced density prevents excessive dressing resistance and grinding burns, while maintaining uniform grain action across the roll length.

The patent applies local quality by making the distribution density of diamond abrasive grains larger at the axial center portion where the circumferential length is smaller. This ensures that sufficient numbers of grains act on the grinding wheel at these portions, preventing excessive wear and local abrasion, while the increased density compensates for the smaller circumferential length.