| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently supply a slicing fluid to a processing point even in slicing a large-diameter ingot by reducing the cut amount of a blade into the ingot as much as possible. SOLUTION: The ingot S is rotatably held around a shaft. The ingot S is sliced in rounds by combining a cutting operation for allowing an external peripheral blade 230 having a rotary shaft (spindle shaft 221) arranged in parallel to the shaft direction of the ingot S to cut, so that the blade edge of the external blade 232 can reach the diameter center of the ingot S; and a rotary operation of rotating the ingot S at 180°or more. A cutting edge protruding quantity R of the external blade 230 can be made small to the degree equivalent to the radius of the ingot S. As a result, the cutting liquid can easily reach a processing point, and a large-diameter ingot can be cut without any trouble. COPYRIGHT: (C)2008,JPO&INPIT |
