| 摘要 |
427,530. Chucks. TURRETTINI, F., 8, Rue des Vieux Grenadiers, Geneva, Switzerland. Nov. 5, 1934, No. 31710. [Class 83 (iii)] In a tool-holding socket having means for clamping or positively ejecting the tool on rotation of the socket spindle, the tool 5 has a tapered shank 4 held in a socket in the end of the machine spindle 3 by means of a clamping rod 6 screwing into the end of the shank 4. A collar 9 on the rod 6 is held between the end of the spindle and a nut 8 screwing thereon so as to rotate within the spindle without axial movement. Clutch teeth 10 on the spindle are normally pressed by a spring 19 into engagement with teeth 11 on a driving member 12 rigidly secured by pins 14 to a gear wheel 13 which effects the drive. To remove the tool 5, the spindle 3 is raised by a quill 2 and hand-operated pinion 21, causing the teeth 10, 11 to separate and the squared end 16 of the rod 6 to engage a square hole 17 in the fixed cover 18 of the casing 1. Rotation of the spindle by means of a hand tool engaging teeth 24 thereon will then unscrew the shank 4 from the rod 6 and force the shank axially out of the socket, rotation of the rod being prevented by the square end 16. To insert a tool 5, the spindle is again raised to the position shown in the Figure, the tool screwed on the rod 6, and the spindle rotated to cause the rod to draw the shank 4 into the socket. The driving train for the gear 13 may be reversible or irreversible and in the former case the spindle 3 may be splined in the gear 13 so that it remains in engagement therewith during its axial motion. |
