| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to shorten time without fitting a chamfering blade outwardly by chamfering the edge part of an aperture of a recessed part formed on both faces of a sheet glass. SOLUTION: A chamfering head 10 has a chamfering drill 70 for chamfering the edge part of an aperture of a recessed part in a sheet glass. In addition, the chamfering head 10 is structured of an electric motor 71 for rotating the chamfering drill 70 as a rotating means and a chamfering drill moving device 72 for moving the chamfering drill 70 in the Z direction and also is installed side by side with a head 5 for forming a recessed part. The chamfering head 13 has a chamfering drill 80 for chamfering the edge part of the aperture of the recessed part formed in the sheet glass. The chamfering head 13 comprises an electric motor 81 for rotating the drill 80 as a rotating means and a chamfering drill moving device 82 for moving the drill 80 in the Z direction and is installed side by side with a head 7 for forming a recessed part. The chamfering drill 80 is arranged opposite to the chamfering drill 70 by connecting the drill 80 to one end of the output rotary shaft of the electric motor 81.
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