| 摘要 |
An easily-positioned cutter chuck has a through hole formed through the cutter chuck. The through hole has an end and a reamed part formed at the end of the through hole and reaming outwardly at two gradients. Because the reamed part enlarges an area ratio of an opening of the through hole to an end surface of the cutter chuck, a protrusion of a positioning apparatus can be easily aimed at and inserted into the reamed part. Because the cutter chuck can be held and positioned steadily by the positioning apparatus, tolerances of the cutter chuck can be well controlled when the outer surface of the cutter chuck is processed for polishing. |
