PURPOSE: To make a grinding face abutted on the face to be ground with an almost uniform pressure over the whole face, to prevent the excessive biting of a partial abrasive grain and to improve the surface roughness with the prevention of a streak formation, by supporting a thin electrocast abrasive grain layer having flexibility by an elastic layer.
CONSTITUTION: An elastic layer 11 is fixed onto a grindstone base body 10, a curved face 11A corresponding to the grinding face of the material to be ground is formed by this elestic layer 11 and also an electrocast abrasive grain layer 12 formed in a thin plate shape by dispersing super abrasive grains into a metal plating phase is fixed by its sticking to this curved face 11A. Consequently, when this electrocast abrasive grain layer 12 is pressed to the face to be ground, the grinding face 12A thereof is deformed along the shape of the face to be ground, abutted on the face to be ground with the pressure almost uniform over the whole face and the excess local abutting pressure is difficult to be caused. The excessive biting of a partial abrasive grain due to the excess abutting pressure is prevented, the streak generation is prevented and the surface roughness can be improved.
ARAI SHIGERU
TSUJISATO YASUO
