| 摘要 |
<p>The drill chuck body is connected to a drill spindle, and chuck jaws forming a retention for the drill tool can be adjusted by turning a control ring. A lock sleeve serves to secure the control ring whereby the lock sleeve, in the direction of shifting, is maintained against the control ring under the force of a spring. At least one contact head is provided at the chuck body. The contact head reaches into a recess in the wall of the lock sleeve. Each recess is formed by two axial grooves which extend adjacent to one another, but which have different lengths, and which are open at the end which is directed towards the control ring for the entry of the respective contact head. The lock sleeve can be turned on the chuck body to such an extent that either one or the other of the two grooves is axially aligned with the contact head. The contact head is extended in the longitudinal direction of the grooves to provide contact surfaces for the lateral walls of the grooves.</p> |
