Drill chuck
AssigneeRoehm GmbH
InventorPeter SCHENK
Life of this patent
Estimating the term…
Abstract
A drill chuck having a chuck body, having a clamping sleeve with a conical basic shape that can rotate about the chuck axis of the chuck body, by the rotation of which clamping sleeve a plurality of clamping jaws can be moved relative to the clamping body. The clamping sleeve is made in two parts, having a conical, metallic outer sleeve, having a conical, inner sleeve made of plastic, wherein the outer sleeve has a cylindrical subsection on its inner circumference for radial centering of the outer sleeve on the inner sleeve. A clamping sleeve and a method for producing knurling on the clamping sleeve are also provided.
Claims12
A drill chuck comprising:
- a chuck body;
- a clamping sleeve with a conical shape that is rotatable about a chuck axis of the chuck body, via rotation of the clamping sleeve a plurality of clamping jaws are movable relative to the clamping body,
- wherein the clamping sleeve is made in two parts, having a conical metallic outer sleeve and having a conical inner sleeve made of plastic, and
- wherein the outer sleeve has a cylindrical subsection on its inner circumference for radial centering of the outer sleeve on the inner sleeve.
A method for producing a knurling on an outer circumferential surface of a conical metallic clamping sleeve for a drill chuck, the method comprising:
- applying the knurling;
- and
- moving, during application of the knurling, the knurling tool relative to the outer circumferential surface along a trajectory that is not parallel to a line on an outer circumferential surface defined by a cone angle.
A clamping sleeve having a metallic base body with a conical basic shape, having a knurling formed on an outer circumferential surface, wherein a cut depth of ridges constituting the knurling decreases from one edge of the knurling to a second edge of the knurling.
Dependencies are inferred from the claim text.