| 摘要 |
Clamping device for a collet chuck having a threadedly mounted cap for urging the collet into and out of cone means. For effecting relative rotation between the threaded cap and the cone means, there is provided manually operable means locking the rotatable spindle through said cone means non-rotatably with respect to the frame of the machine and then effecting through suitable gear means the desired rotation of said cap. In the operation thereof, a manually operable device is moved by one motion for effecting engagement between the spindle and the frame of the machine, said motion at the same time drivingly engaging the periphery of said cap, as through gear teeth, said means then being movable by another motion to effect rotation of said cap with respect to said locked spindle. As a safety measure, said means also prevents rotation of the spindle until said means are disengaged from the cap. |
