ELECTRODEPOSITED GRINDING WHEEL, ITS MANUFACTURING DEVICE, AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To improve the cutting quality and life and reduce the manufacturing cost. SOLUTION: An abrasive grain layer 13 made of a plurality of abrasive grain layer parts 12 is provided on the surface 11a of a grinding wheel substrate 11, and the abrasive grain layer parts 12 are connected together by bridge parts 9. Nonabrasive grain parts 22 are provided between the abrasive grain layer parts 12. Super-abrasive grains 14 are densely arranged at the central part 12a of each abrasive grain layer part 12 and coarsely arranged at peripheral parts 12b. The metal coupling phase for fixing the super-abrasive grains 14 is formed with first and second metal plating phases 15 and 16. The first metal plating phase 15 is decreased in thickness into a ridge shape from the central part 12a toward the peripheral parts 12b.