ROTATING DISK GRINDING WHEEL

摘要

PROBLEM TO BE SOLVED: To keep good cutting performance and to effectively reduce under-head abrasion by improvement of the shape and the material of a segment chip, in the rotating disk grinding wheel having a plurality of the segment chips arranged on the outer peripheral surface of a substrate in a constant interval with slits therebetween. SOLUTION: Total or part of the plurality of segment chips 12 have a shape where at least the front part in the rotation direction of the grinding wheel is extended to the inside than the outer peripheral edge of the substrate. An abrasive grain layer with different abrasion resistance in an extending part 12d and a body part 12c is formed integrally.