DISC-SHAPED GRINDSTONE

摘要

A disc-shaped grindstone 1 includes a plurality of split grindstones provided in an outer circumferential surface of a disc-shaped base 3. At least a part of the split grindstones include a moving grindstone 6 which is movable in the axial direction of the disc-shaped base 3. Since a part of the split grindstones 4 is the moving grindstone 6 which is movable in the axial direction, the width of the disc-shaped grindstone 1 may be changed in a manner such that the moving grindstone 6 is moved in the axial direction. Accordingly, it is possible to promptly handle a plurality of kinds of grinding targets without replacing the disc-shaped grindstone 1.

主权项

1. A disc-shaped grindstone in which a plurality of split grindstones are provided in an outer circumferential surface of a disc-shaped base,
wherein the split grindstones include at least one moving grindstone which is movable in an axial direction of the disc-shaped base, wherein a corner portion in the axial direction of each split grindstone is formed in a curved surface shape, wherein at least one split grindstone which is fixed to the disc-shaped base so as not to be movable in the axial direction among the split grindstones is defined as a fixed grindstone, and wherein the moving grindstone and the fixed grindstone are formed so that a curvature radiuses of the corner portions in the axial direction are different from each other.