Cutting insert

A cutting insert comprising:

• a top surface;
• a bottom surface opposite to the top surface;
• a side surface contiguous to the top surface and the bottom surface;
• and
• a corner cutting edge, a first cutting edge, a second cutting edge and a third cutting edge formed at a ridge line formed by the side surface and the top surface,
• the corner cutting edge having a first end and a second end opposite to the first end in a top view,
• the first cutting edge extending from the first end in a first direction in the top view,
• the second cutting edge extending from the second end in a second direction intersecting the first direction in the top view,
• the third cutting edge extending from the second cutting edge in a third direction forming an acute angle with the second direction in the top view,
• the top surface having a first rake face located adjacent to the first cutting edge, a second rake face located adjacent to the second cutting edge, and a third rake face located adjacent to the third cutting edge,
• the first, second and third rake faces forming first, second and third rake angles, respectively, with a reference plane parallel to the bottom surface,
• the first rake angle being larger than the third rake angle,
• the third rake angle being larger than the second rake angle,
• the first cutting edge being inclined so as to approach the bottom surface as the first cutting edge is farther away from the first end.