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US 9,855,610 B2Granted
Vibration-damped tool
AssigneeSandvik Intellectual Property AB
InventorPeter Frank
Life of this patent
Estimating the term…
Abstract
A tool for machining work pieces is disclosed. In order to provide a tool which exhibits only very small vibrations during operation, the tool body of the tool has a cavity in which a multiplicity of hollow structural elements having an outer closed shell, within which at least one solid particle or a hollow body is arranged in a freely movable manner, are accommodated.
Claims8
A tool for machining workpieces, comprising a tool body,
- wherein the tool body has at least one cavity in which there are received a plurality of hollow structural elements with a closed outer shell, within the plurality of hollow structural elements at least one solid particle or a hollow body is arranged freely movable,
- wherein the tool is a drilling or milling tool with an axis of rotation,
- wherein the tool includes a shaft portion, for connecting the tool to a drive, and a tool portion, which has a cutting edge for machining a workpiece or to which a cutting insert with such a cutting edge is securable,
- wherein the cavity is formed substantially annular, and
- wherein the cavity has a 2-fold or multiple rotational symmetry in a section plane perpendicular to the axis of rotation, or in that several cavities, in which there are received a plurality of hollow structural elements with a closed outer shell, within which at least one solid particle or a hollow body is arranged freely movable, have a 2-fold or multiple rotational symmetry in a section plane perpendicular to the axis of rotation.
2 more elements
A tool for machining workpieces, comprising a tool body,
- wherein the tool body has at least one cavity in which there are received a plurality of hollow structural elements with a closed outer shell, within the plurality of hollow structural elements at least one solid particle or a hollow body is arranged freely movable,
- wherein the tool is a drilling or milling tool with an axis of rotation,
- wherein the tool includes a shaft portion, for connecting the tool to a drive, and a tool portion, which has a cutting edge for machining a workpiece or to which a cutting insert with such a cutting edge is securable,
- wherein the cavity is formed substantially annular, and
- wherein the hollow structural elements substantially completely fill the cavity.
2 more elements
A tool for machining workpieces, comprising a tool body,
- wherein the tool body has at least one cavity in which there are received a plurality of hollow structural elements with a closed outer shell, within the plurality of hollow structural elements at least one solid particle or a hollow body is arranged freely movable,
- wherein the tool is a drilling or milling tool with an axis of rotation,
- wherein the tool includes a shaft portion, for connecting the tool to a drive, and a tool portion, which has a cutting edge for machining a workpiece or to which a cutting insert with such a cutting edge is securable,
- wherein the cavity is formed substantially annular, and
- wherein the hollow structural elements are connected to one another within the cavity by sintering, by adhesion or by a curing substance.
2 more elements
A tool for machining workpieces, comprising a tool body,
- wherein the tool body has at least one cavity in which there are received a plurality of hollow structural elements with a closed outer shell, within the plurality of hollow structural elements at least one solid particle or a hollow body is arranged freely movable,
- wherein the tool is a drilling or milling tool with an axis of rotation,
- wherein the tool includes a shaft portion, for connecting the tool to a drive, and a tool portion, which has a cutting edge for machining a workpiece or to which a cutting insert with such a cutting edge is securable,
- wherein the cavity is formed substantially annular, and
- wherein the cavity is arranged within a region that extends radially outwards from the axis of rotation by a length a, wherein the length a<0.8*r, and wherein r is half the tool diameter.
2 more elements
A tool for machining workpieces, comprising a tool body,
- wherein the tool body has at least one cavity in which there are received a plurality of hollow structural elements with a closed outer shell, within the plurality of hollow structural elements at least one solid particle or a hollow body is arranged freely movable,
- wherein the tool is a drilling or milling tool with an axis of rotation,
- wherein the tool includes a shaft portion, for connecting the tool to a drive, and a tool portion, which has a cutting edge for machining a workpiece or to which a cutting insert with such a cutting edge is securable,
- wherein the cavity is formed substantially annular, and
- wherein the cavity is formed stepped or conical along the axis of rotation, from the shaft portion in the direction of the tool portion, with the result that the cross-sectional surface area perpendicular to the axis of rotation of the cavity is smaller at a first axial position than at a second axial position, and wherein the first axial position is arranged closer to the shaft portion than the second position.
2 more elements
A tool for machining workpieces, comprising a tool body,
- wherein the tool body has at least one cavity in which there are received a plurality of hollow structural elements with a closed outer shell, within the plurality of hollow structural elements at least one solid particle or a hollow body is arranged freely movable,
- wherein the tool is a drilling or milling tool with an axis of rotation,
- wherein the tool includes a shaft portion, for connecting the tool to a drive, and a tool portion, which has a cutting edge for machining a workpiece or to which a cutting insert with such a cutting edge is securable,
- wherein the cavity is formed substantially annular, and
- wherein the cavity has a shape that is stepped or conical along the axis of rotation, wherein the cavity has a cross-sectional surface area perpendicular to the axis of rotation that is smaller at a first axial position than at a second axial position, and wherein the first axial position is arranged closer to the shaft portion than the second position.
2 more elements
Dependencies are inferred from the claim text.