Indexable insert for face or disc milling cutters, and a cutter using said insert

Abstract

A cutting insert for milling tools comprises upper and lower, opposite surfaces (2, 3) of which at least the lower (3) is substantially plane in order to form a base surface to be supported by a cooperating supporting surface of the milling tool, opposite first and second side surfaces (6, 6') and opposite third and fourth side or gable surfaces (7, 7') which each forms a main cutting edge along an edge line that is distanced from the base surface (3), which main cutting edge at its opposite ends joins secondary cutting edges (10, 10', 10", 10'"). Each of the two side surfaces (6, 6') is inclined and forms an obtuse angle with the base surface (3). The two secondary cutting edges joining a common main cutting edge are located in a common plane that forms an obtuse angle with each imaginary plane being parallel with the base surface. The corner angle between a secondary cutting edge and the adjacent main cutting edge is equal at at least two diametrically opposite cutting corners (9).

Dependencies are inferred from the claim text.