To provide a chamfering method capable of shortening a chamfering time of four round corner faces of a square pole-like silicon ingot.
The method includes the steps of spacing a height between a pair of longitudinally movable grinding wheel spindles 11o, 11o bearing cup wheel type grinding stones 11g, to cutting edges of the cup wheel type grinding stones 11g, 11g to start in-feed grinding of the workpiece while rotating the C-axis center of a workpiece supported between a headstock 7a and a tailstock 7b of a clamping mechanism 7 mounted onto a work table by 26 degrees back and forth in a swinging manner, and passing the swinging workpiece between the cup wheel type grinding stones 11g, 11g to chamfer the round faces of the workpiece by traverse grinding.
KOBAYASHI KAZUO
IDE SATORU
KUBO TOMIO
