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.
Claims15
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 metallic outer sleeve and having an inner sleeve made of plastic, the metallic outer sleeve and the inner sleeve each having a conical basic shape,
- wherein the outer sleeve has a cylindrical subsection on its inner circumference for radial centering of the outer sleeve on the inner sleeve,
- wherein a knurling is formed on a circumferential surface of the conical basic shape of the outer sleeve,
- wherein the knurling is uniform along an entirety of the circumferential surface of the conical basic shape of the outer sleeve, and
- wherein the knurling is defect-free.
A drill chuck comprising:
- a chuck body having a chuck axis;
- a conical clamping sleeve rotatable about the chuck axis of the chuck body;
- a plurality of clamping jaws movable relative to the clamping body via rotation of the clamping sleeve, the clamping sleeve comprising:
- a plastic conical inner sleeve;
- and
- a metallic outer sleeve having an outer contour having a conical portion, the outer sleeve having a cylindrical subsection on its inner circumference for radial centering of the outer sleeve on the inner sleeve;
- and
- a knurling formed on the conical portion of the metallic outer sleeve,
- wherein the knurling is uniform along an entirety of the circumferential surface of the conical basic shape of the outer sleeve, and
- wherein the knurling is defect-free.
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, the clamping sleeve being made in two parts, comprising:
- a conical metallic outer sleeve;
- and
- a conical inner sleeve made of plastic,
- wherein a knurling is formed on a circumferential surface of the conical basic shape of the outer sleeve, the knurling being formed by moving, during application of the during, a 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,
- wherein the knurling is uniform along an entirety of the circumferential surface of the conical basic shape of the outer sleeve, and
- wherein the knurling is defect-free.
Dependencies are inferred from the claim text.