| 摘要 |
<p>The chuck, comprising a central component with an axis (3) for attaching to a machine shaft, and jaws (7) that hold a tool, has the inner surface of at least one of the jaws made with a cavity (20) that has its open side facing the axis, a base (23) and side walls (24, 25). The cavity contains a roller (29) that can move between the side walls and interact with an inclined or curved cavity base to grip a tool inserted in the chuck when the jaws are closed on it.</p> |
