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US 2013/0193654 A1Published application
Chuck
AssigneeRoehm GmbH
InventorJohann TAGLANG
Life of this patent
Estimating the term…
Abstract
A chuck has a chuck body rotatable about an axis, a plurality of jaws radially displaceable on the body for gripping a workpiece, a chuck drive for rotating the chuck about the axis, and a center point axially shiftable in the body and axially engageable with the workpiece gripped by the jaws. An electric drive is coupled to the center point for axially shifting same.
Claims17
A chuck comprising:
- a chuck body rotatable about an axis;
- a plurality of jaws radially displaceable on the body for gripping a workpiece;
- chuck drive means for rotating the chuck about the axis;
- a center point axially shiftable in the body and axially engageable with the workpiece gripped by the jaws;
- and
- an electric drive coupled to the center point for axially shifting same.
3 more elements
A method of operating a chuck having:
- a chuck body rotatable about an axis;
- a plurality of jaws radially displaceable on the body for gripping a workpiece;
- chuck drive means for rotating the chuck about the axis;
- a center point axially shiftable in the body and axially engageable with the workpiece gripped by the jaws;
- and
- an electric drive coupled to the center point for to axially shifting same,
- the method comprising the steps of:
- detecting an electrical parameter of the electric drive;
- on detection of a parameter indicating that axial shifting of the center point is being resisted by a predetermined force, stopping energization fo the electric drive.
6 more elements
Dependencies are inferred from the claim text.