Device for chucking a tool or workpiece and method for operating such a chucking device

摘要

A chucking device, which includes a rotationally-drivable spindle, a chucking means for mechanical chucking of a chucked object arranged on the spindle, a drive gearwheel, and a drive for rotationally driving the gearwheel. The chucking means has a rotating body, which has gear teeth and allows, through rotational movement, the chucked object to be chucked or unchucked. The drive gearwheel has gear teeth configured for complementary engagement with the gear teeth of the rotating body. The gear teeth of the rotating body and drive gearwheel are designed to provide flank play, such that the drive gearwheel can assume a neutral angular position with respect to the rotating body so that the gear teeth of the rotating body and drive gearwheel do not touch each other.

主权项

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.