| 摘要 |
A chuck for securely holding a cutting tool while being rotated by a driving apparatus. The chuck includes a chuck body defining a tool bore into which the cutting tool may be inserted. A cam assembly is pivotally mounted to the chuck body and operably extends into the tool bore. An actuator cooperates with the chuck body and is positionable to operate the cam to secure or release the cutting tool, within the tool bore. In an alternative embodiment, a collet is used and the cam and actuator operate to secure or release the collet, and any cutting tool inserted into the collet, within the bore.
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