Milling insert and a milling tool, as well as a shim plate for such tools

A milling tool comprising:

• a body including an insert seat having a bottom surface and at least one side-support surface;
• and
• a milling insert detachably mounted to the insert seat, the milling insert including:
• opposite top and bottom sides between which a clearance surface extends, the clearance surface extending along a length including two straight sections and two convex arched sections;
• two opposite cutting edges formed in a transition between the top side and the clearance surface, each of the cutting edges including:
• a substantially straight edge portion in connection with a respective one of the straight sections of the clearance surface;
• and
• a curved edge portion in connection with a respective one of the convex arched sections of the clearance surface;
• and
• cooperative couplings securing the milling insert in a mounted state to the insert seat, a first one of the couplings being located along the clearance surface of the milling insert, a second one of the couplings being located along the side-support surface of the insert seat, and the couplings including one or more male- and/or female-like engagement members,
• wherein the engagement members comprise a plurality of ridges which are separated by grooves, and each individual groove comprises a depth that successively decreases in a direction towards the top side.

A milling insert comprising:

• a first surface including a first peripheral edge;
• a second surface including a second peripheral edge spaced from the first peripheral edge;
• a clearance surface between the first and second peripheral edges, the clearance surface including first and second straight sections and first and second convex arched sections;
• and
• a coupling disposed on the clearance surface and including one or more male- and/or female-like engagement members,
• wherein the engagement members comprise a plurality of ridges which are separated by grooves, and each individual groove comprises a depth that successively decreases in a direction towards the top side.