Cutting insert, tool holder, and tool for machining a workpiece

A tool for machining a workpiece, comprising:

• a cutting insert having a first cutting edge, a first cutting insert bore and a second cutting insert bore, wherein the cutting insert has an elongate shape and extends along a cutting insert longitudinal direction, wherein the first cutting insert bore extends along a first bore axis, which runs substantially orthogonally to the cutting insert longitudinal direction, wherein the second cutting insert bore extends along a second bore axis which is oriented parallel to the first bore axis, wherein the cutting insert further comprises a laterally protruding elevation, which is arranged on a side of the cutting insert that is oriented transversely to the first bore axis and the second bore axis, wherein on the elevation are arranged a first lateral holder contact sur-face, a second lateral holder contact surface, an axial holder contact surface and a first horizontal holder contact surface, for a bearing contact of the cutting insert against a tool holder, and wherein both the first cutting insert bore and the second cutting insert bore pass through the elevation, wherein the first lateral holder contact surface runs substantially orthogonally to the first bore axis and the second bore axis and completely surrounds the first cutting insert bore, and wherein the second lateral holder contact surface lies in a same plane with the first lateral holder contact surface, is distanced from the first lateral holder contact surface in the cutting insert longitudinal direction and completely surrounds the second cutting insert bore, and wherein the axial holder contact surface and the first horizontal holder contact surface run substantially orthogonally to the first lateral holder contact surface and transversely to each other;
• the tool holder comprising a cutting insert receiving fixture for receiving the cutting insert;
• a first screw inserted through the first cutting insert bore into the tool holder;
• and
• a second screw inserted through the second cutting insert bore into the tool holder.

A cutting insert for a tool for machining a workpiece, comprising a first cutting edge, a first cutting insert bore and a second cutting insert bore,

• wherein the cutting insert has an elongate shape and extends along a cutting insert longitudinal direction,
• wherein the first cutting insert bore extends along a first bore axis, which runs substantially orthogonally to the cutting insert longitudinal direction,
• wherein the second cutting insert bore extends along a second bore axis which is oriented parallel to the first bore axis,
• wherein the cutting insert further comprises a laterally protruding elevation, which is arranged on a side of the cutting insert that is oriented transversely to the first bore axis and the second bore axis, wherein on the elevation are arranged a first lateral holder contact surface, an axial holder contact surface, a first horizontal holder contact surface and a second horizontal holder contact surface for a bearing contact of the cutting insert against a tool holder, and wherein both the first cutting insert bore and the second cutting insert bore pass through the elevation,
• wherein the first lateral holder contact surface runs substantially orthogonally to the first bore axis and the second bore axis,
• wherein the axial holder contact surface and the first horizontal holder contact surface run substantially orthogonally to the first lateral holder contact surface and transversely to each other,
• wherein the second horizontal holder contact surface is distanced from the first horizontal holder contact surface in the cutting insert longitudinal direction, and
• wherein a first distance, measured in the cutting insert longitudinal direction, between the first horizontal holder contact surface and the second horizontal holder contact surface is greater than a second distance, measured in the cutting insert longitudinal direction, between the first bore axis and the second bore axis.

A tool for machining a workpiece, comprising:

• a cutting insert having a first cutting edge, a first cutting insert bore and a second cutting insert bore, wherein the cutting insert has an elongate shape and extends along a cutting insert longitudinal direction, wherein the first cutting insert bore extends along a first bore axis, which runs substantially orthogonally to the cutting insert longitudinal direction, wherein the second cutting insert bore extends along a second bore axis which is oriented parallel to the first bore axis, wherein the cutting insert further comprises a laterally protruding elevation, which is arranged on a side of the cutting insert that is oriented transversely to the first bore axis and the second bore axis, wherein on the elevation are arranged a first lateral holder contact surface, an axial holder contact surface, a first horizontal holder contact surface and a second horizontal holder contact surface for a bearing contact of the cutting insert against a tool holder, and wherein both the first cutting insert bore and the second cutting insert bore pass through the elevation, wherein the first lateral holder contact surface runs substantially orthogonally to the first bore axis and the second bore axis, wherein the axial holder contact surface and the first horizontal holder contact surface run substantially orthogonally to the first lateral holder contact surface and transversely to each other, wherein the second horizontal holder contact surface is distanced from the first horizontal holder contact surface in the cutting insert longitudinal direction, and wherein a first distance, measured in the cutting insert longitudinal direction, between the first horizontal holder contact surface and the second horizontal holder contact surface is greater than a second distance, measured in the cutting insert longitudinal direction, between the first bore axis and the second bore axis;
• the tool holder comprising a cutting insert receiving fixture for receiving the cutting insert;
• a first screw inserted through the first cutting insert bore into the tool holder;
• and
• a second screw inserted through the second cutting insert bore into the tool holder.