| 摘要 |
The object of the present invention is to provide a method whereby it is possible to cut a single crystal ingot comparatively accurately while allowing resulting slices to have a flat surface, and to lengthen the life of the blade more than would be possible with conventional methods. A single crystal ingot 10 a is arranged below a straightly running portion 18 a of the blade which is made to run endlessly along a circuit such that the longitudinal axis of ingot 10 a crosses at right angles with the straightly running portion 18 a of the blade, thereby enabling the straightly running portion 18 a of the blade to cut the ingot 10 a perpendicularly. If the blade is inclined to one side, the cutting machine detects a shift A between the uppermost end of cut surface 10 b and its lowermost end projected to the longitudinal axis of ingot, and corrects the inclination of the blade by tilting the imaginary cut surface 10 c including the straightly running portion of the blade in the opposite direction by an angle with respect to a line vertical to the longitudinal axis of ingot 10 a such that shift B is equal to shift A. Subsequent to correction, cutting is further continued with the straightly running portion 18 a of the blade whose inclination has been just corrected
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