| 摘要 |
PROBLEM TO BE SOLVED: To easily replace a polishing means.SOLUTION: In the abrasive cassette which polishes a ball to be transported to a prescribed direction by bringing into contact with an abrasive, the abrasive is formed into a long endless belt-like shape and stored in a meandering shape in a cassette body formed into a substantially box-like shape, a part of the abrasive is movably exposed to an outside face of the cassette body between an exit arranged at one side of the cassette body and an entrance arranged at the other side, an abrasive transport means for leading the abrasive exposed outside from the entrance to the cassette body is formed in the vicinity of the entrance of the cassette body, and a part of the abrasive exposed to the outside from the cassette body and having a prescribed area is used as a region for polishing the ball. |
