Patent ID: 7891918

Claim:
A drill comprising: a housing; a drivable drill spindle rotatably mounted in the housing; a chuck body coaxially connected and rotationally fixed to the drill spindle; a tightening sleeve rotatable on and relative to the chuck body; jaws moveable relative to the chuck body by the to tightening sleeve; a coupling between the housing and the tightening sleeve and having a coupling sleeve held on the housing so as not to rotate with the chuck body and movable relative to the chuck body chuck between a coupling position in which it connects the tightening sleeve to the spindle housing angularly in a friction-fit manner and a decoupling position into which it is urged by a decoupling spring when torque between the tightening sleeve and the coupling sleeve in the coupling position exceeds a predetermined value, the coupling sleeve being formed by a stationary rear sleeve associated with the housing and a front sleeve surrounding the tightening sleeve and axially movable with respect to the stationary rear sleeve between the decoupling and the coupling positions; and sensor means that influences the drive control of the drill as a function of the operating state of the drill chuck and associated with the housing, the sensor means including a sensor for detecting the position of the front sleeve, associated with machine control of the drill, and situated in a region of axial adjustment of the front sleeve.