Patent ID: 9346105
Filing Date: 2016-05-24
CPC Classification: B23B,B23Q,Y10T

Claim Text:
1. A chucking device, comprising: a rotationally-drivable spindle; chucking means for mechanical chucking or unchucking of a chucked object arranged on the spindle, the chucking means comprising a rotating body having gear teeth, each with a leading tooth flank and a trailing tooth flank, which allows the chucked object to be chucked or unchucked by relative rotational movement of the rotating body and the spindle; a drive gearwheel having gear teeth engagable with the gear teeth of the rotating body, each of the drive gearwheel gear teeth having a leading tooth flank and a trailing tooth flank, which are complementary to the gear teeth of the rotating body; a drive for rotationally driving the drive gearwheel, and a controller, wherein the gear teeth of the rotating body and the gear teeth of the drive gearwheel define a flank play so as to define a neutral angular position of the drive gearwheel with respect to the rotating body in which the leading tooth flank and the trailing tooth flank of the drive gearwheel and a corresponding leading tooth flank and trailing tooth flank of the rotating body are not in contact with each other; and the drive and the controller are configured and adapted to transfer the drive gearwheel relative to the rotating body into the neutral angular position and maintain said neutral angular position during rotation of the spindle and the chucked object.