Indexable asymmetric cutting insert and cutting tool therefor

A cutting insert (100) having a longitudinal insert axis (A) extending perpendicular to an insert transverse mid-plane (P), and comprising:

• two end surfaces (102) and a peripheral surface (104) extending therebetween, the end surfaces (102) being located on opposite sides of the mid-plane (P), facing in opposite directions and being intersected by the longitudinal insert axis (A);
• and
• two insert portions (106) extending on opposite sides of the mid-plane (P), each insert portion (106) comprising:
• a cutting protrusion (110) extending longitudinally from one of the end surfaces (102) in the direction of the mid-plane (P), and having a rear surface (115), a relief surface (114) facing in a direction opposite to that of the rear surface (115), a rake surface (112), and a main cutting edge (116) formed at the intersection of the rake and relief surfaces (112,114), the main cutting edge (116) extending between two main cutting edge ends (136);
• and
• a clamping recess (108) formed along the rear surface (115) of the cutting protrusion (110);
• wherein:
• a line connecting longitudinal projections of the main cutting edge ends (136) of each main cutting edge (116) in a direction parallel to the insert axis (A) forms an edge projection (118), and the edge projections (118) of both of the main cutting edges (116) form a non-zero first angle (α) therebetween;
• and
• the rake surfaces (112) of the cutting protrusions (110) are located on opposite end surfaces (102) of the cutting insert (100).