| 摘要 |
PURPOSE:To reduce manufacturing cost by simplifying structure of a tailstock side, by providing an attachment and detachment device constituted by arranging radially a plurality of pistons. CONSTITUTION:An arm 14 is rocked and centering is performed to a main spindle 10 under a state wherein an outer flange 12-2 on a tailstock side is supported by an outer flange supporting device 7. A shaft 15 is advanced and the outer flange 12-2 is fitted over a shaping flange 9-2. A piston 18-1 fitted to an inside shaft 11-2 is protruded and abutted against a collar 26 of an adopter 23, through which the outer flange 12-2 on the tailstock side is supported. A piston 18-2 fitted to the shaft 15 is moved backward after that, abutting relation with the adapter 23 is released and then the shaft 15 is moved backward. The outer flange supporting device 7 with only the shaft 15 rocks and retreats. At the time of unloading of a tire, reverse action is performed. |
