Clamping unit for a chuck of a machine tool spindle
OwnerEdwin Reinhard, Dominique Steffeninventors
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Abstract
A clamping unit for a chuck of a machine tool spindle contains a threaded shaft for adjusting the clamping jaws of the chuck. The threaded shaft is axially adjustable in the clamping unit by means of a threaded nut connected to a rotor of a servomotor actuator. An electrically actuable, releasable clutch has a first clutch element, which is connected in a rotationally secure and axially displaceable manner to the threaded shaft, and a second clutch element, which cooperates with the first clutch element and is connected in a rotationally secure manner to the rotor. When the clutch is activated, the threaded shaft and the threaded nut are mutually connected in a rotationally secure manner and prevent axial displacement of the threaded shaft.
Claims4
A clamp for a chuck of a machine tool spindle, comprising:
- a threaded shaft for adjusting clamping jaws of the chuck, the threaded shaft being axially adjustable in the clamp using a threaded nut connected to a rotor of a servomotor actuator, and
- an electrically actuable, releasable clutch comprising a first clutch element that is connected in a rotationally secure and axially displaceable manner to the threaded shaft, and a second clutch element that cooperates with the first clutch element and is connected in a rotationally secure manner to the rotor.
Dependencies are inferred from the claim text.