Internal milling cutter

An internal milling cutter comprising:

• a ring shaped carrier disk having an outer circumference, an inner circumference, a center axis defining an axis of rotation of the milling cutter, and a plurality of separated tool holder segments removably mounted at the inner circumference of the carrier disk;
• and
• at least one clamp for each of the plurality of tool holder segments mounted either on the carrier disk or on the tool holder segment, wherein the plurality of tool holder segments together form a ring, and wherein each of the plurality of tool holder segments at its inner circumference includes at least one cutting insert seat with a mounting element for a cutting insert or at least one cutting edge, the carrier disk including an axial abutment surface for each of the plurality of tool holder segments, the axial abutment surface supporting each of the plurality of tool holder segments in an axial direction of the carrier disk, each of the plurality of tool holder segments including an axial contact surface in engagement with the axial abutment surface of the carrier disk, and wherein the clamp is located and arranged such that it generates a force in the axial direction pressing the axial contact surface of the tool holder segment onto the axial abutment surface of the carrier disk, and wherein the clamp is mounted movably in a radial direction of the carrier disk between a locking position and a releasing position, wherein in the locking position the clamp is in engagement with the carrier disk and the tool holder segment preventing an axial separation of the carrier disk and the tool holder segment, and wherein in the releasing position the clamp allows a separation of the carrier disk and the tool holder segment in the axial direction of the carrier disk,
• wherein each of the plurality of tool holder segments and the carrier disk include complementary protrusions and recesses and in engagement with each other in order to provide a transfer of a torque from the carrier disk onto the plurality of tool holder segments, and
• wherein each recess and each protrusion has two side surfaces extending radially such that the two side surfaces taper towards the center axis of the carrier disk enabling a radial expansion of each of the plurality of tool holder segments.