To obtain a cutting blade which cuts smoothly a plate-shaped ceramic body without causing roughness on its cutting surface, prevents the wear of the edge to the utmost and has a blade face sufficient in strength, and a blade face processing method for the cutting blade of the edge face thereof.
The cutting blade has an almost rectangular shape to cut the platen-shaped ceramic body while pushing the same in its thickness direction and has the blade surface formed along one side of the long side direction thereof by a plane. A grinding groove 12 extending in a cutting advance direction P is formed on the blade surface 11. This blade surface 11 is made to grind, for example, while rotating a cup-shaped grindstone and moving the cutting blade in the long side direction of the blade surface 11 in such a state that the grinding surface of grindstone is set so that the axial center of the grinding stone is opposed to the blade surface 11. In this case, the blade surface 11 may be ground while relatively receptocally moving the cutting blade with respect to the grinding surface in the short side direction of the blade surface on the planar grinding stone.
IZEKI YUTAKA
OGOSHI KAZUNORI
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