High-feed milling tool

A milling tool having a tool rotation direction and a tool counter-rotation direction opposite thereto, the milling tool comprising:

• an elongated shank portion and a cutting portion connected to the shank portion;
• the shank portion defining:
• a longitudinal axis (AL) which defines a downward direction (DD) from the shank portion to the cutting portion and an upward direction (DU) opposite to the downward direction;
• and
• an outward radial direction (DO) perpendicular to the longitudinal axis and outward from the milling tool, and an inward radial direction (DI) opposite to the outward radial direction;
• and
• the cutting portion comprising:
• a rake surface;
• a relief surface;
• and
• a cutting edge formed along an intersection of the rake surface and the relief surface, the cutting edge comprising a radial cutting edge having an axial edge length LAE measurable parallel to the longitudinal axis (AL) and a radial edge length LRE measureable perpendicular to the longitudinal axis (AL);
• wherein, in a top view facing the rake surface, the radial cutting edge comprises:
• a first sub-edge having a first longitudinal length L1 and a first radial length R1, a first uppermost point and a first lowermost point which define a first imaginary line (IL1), and a first sub-edge angle k1 formed between the first imaginary line (IL1) and the longitudinal axis (AL);
• a second sub-edge located downwardly of the first sub-edge and having a second longitudinal length L2 and a second radial length R2, a second uppermost point and a second lowermost point which define a second imaginary line (IL2), and a second sub-edge angle k2 formed between the second imaginary line (IL2) and the longitudinal axis (AL);
• and
• a third sub-edge connecting the first and second sub-edges and having a third longitudinal length L3 and a third radial length R3;
• wherein:
• the first sub-edge extends towards the third sub-edge in the downward (DD) and outward (DO) radial directions;
• the second sub-edge extends towards the third sub-edge in the upward (DU) and outward (DO) radial directions;
• and
• in said top view facing the rake surface, the first sub-edge angle k1 fulfills the condition 12°<k1<25° and/or the second sub-edge angle k2 fulfills the condition 12°<k2<25°.