| 摘要 |
Keyless quick-change chuck for rotary, percussion and hammer drilling, with a clamping-force interlock for right-hand/left-hand running, with clamping jaws (5) which are positively guided in a conical sleeve (7, 8) and which can be actuated by a driving head (4) formed on a chuck-drive body (1), the conical sleeve (7, 8) being mounted on the chuck-drive body (1) so as to be axially displaceable and fixed in terms of rotation, with a spring-loaded collet (18a, 17b, 18) axially displaceable on the chuck-drive body (1) and mounted fixedly in terms of rotation, and with a clamping ring (21) which cooperates with a screwing effect with the outer cone ring (18) of the collet by means of a first thread (19, 20) and with the conical sleeve (7, 8) by means of a second thread (9, 22) of equal flight, having a pitch difference relative to the first thread (19, 20), with a releasable coupling (28a, 28b, 29, 31a, 31b; 30), by means of which the clamping ring (21) can be coupled fixedly in terms of rotation to the chuck-drive body (1) and/or to the conical sleeve (7, 8), as well as with a device (39; 40 to 43) which, for rotary and percussion drilling, allows a non-positive clamping of a tool shank and, for hammer drilling, a positive clamping of the drill shank, so that the latter can execute axial relative movements in relation to the quick-change chuck. <IMAGE>
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