| 摘要 |
PURPOSE:To simply and promptly perform replacement work of a click by providing click storage magazines, with many click fitting grooves, in multistage on a chuck click replacement device and enabling clicks to be moved between said click fitting grooves and grooves in the chuck main body. CONSTITUTION:Click storage magazines 34, 34E, with many click fitting grooves 37 capable of freely drawing out and putting in clicks 11 for replacement in the direction of a rotary axis, are provided on the outer periphery of the rotary body 35 of a chuck click replacement device 23 and these magazines 34, 34E are rotatably provided around an axis perpendicular to the axis of a chuck main body 5. Further, each click fitting groove 37 of the magazines 34, 34E is enabled to be indexed in a click replacement position B which is positioned on an extension line of a click fitting groove 9 at a click replacement position A. Then a passage 38, which can allow a click 11 to pass at the time of replacing one of the click storage magazine of the lower stage 34 with one of the click storage magazine of the upper stage 34E, is provided at the click replacement position A, so that indexing may be possible, while a click movement device 64, moving the click 11 between the click fitting groove of the magazine and the click equipping groove 9, is provided. |
