| 摘要 |
PROBLEM TO BE SOLVED: To attach or detach a workpiece, whose base cannot be gripped by an outside diameter chuck because of a processed hole decentered from a center of the base, to or from a workpiece gripping device with an automatic operation. SOLUTION: When a processed hole 15 of a workpiece 10 is processed by a lathe, the workpiece 10 is seated on a workpiece seating face 4. Under this condition, a positioning pin 5 is inserted in a first long hole 13<SB>-1</SB>, and an inside diameter chuck 3 decentered from a main shaft center of the lathe is inserted in a through hole 12 of the workpiece. The workpiece 10 is positioned to a position, at which rotation around the inside diameter chuck 3 is restrained by the positioning pin 5. Then, the workpiece 10 is gripped by the inside diameter chuck 3. COPYRIGHT: (C)2011,JPO&INPIT
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