Double-sided indexable insert having tapered waist for high-feed milling and drilling

A double-sided indexable insert (14, 114, 214) configured for high-feed or drilling operations, the insert (14, 114, 214) having a 180-degree rotational symmetry about each of the longitudinal first axis (X), lateral second (Y) and vertical third axis (Z) of a three-dimensional euclidean space;

• the insert (14, 114, 214) comprising:
• opposite first and second main surfaces (18, 20) and a peripheral surface (22) extending therebetween, each of the first and second main surfaces (18, 20) comprising a main abutment surface (33) and at least two rake surfaces (58);
• and
• a through clamping bore (28) extending along the third axis (Z) and opening out to the first and second main surfaces (18, 20);
• the peripheral surface (22) comprising:
• two opposite front surfaces (36), each comprising a pair of outward abutment surfaces (44);
• and
• two opposite side surfaces (34), each extending between the two front surfaces (36), each side surface (34) comprising a pair of at least partially planar inward abutment surfaces (40);
• wherein
• each pair of outward abutment surfaces (44) converge outwardly away from the third axis (Z);
• each pair of inward abutment surfaces (40) converge inwardly towards the third axis (Z);
• and
• the converging inward abutment surfaces (40) on the opposite side surfaces (34) provide the insert with a tapered waist, in a view of the insert along the vertical third axis (Z).