Milling cutting insert

A cutting insert, comprising:

• a top surface and plurality of side surfaces;
• a plurality of cutting edges;
• a first cutting edge formed at an intersection between the top surface and a first side surface, the first cutting edge merging into a curved cutting corner at a first tangential point;
• and
• a second cutting edge formed at an intersection between the top surface and a second side surface, the second cutting edge merging into the curved cutting corner at a second tangential point,
• wherein each cutting edge includes a sloping region and a rising region, and
• wherein the sloping region linearly increases in height along the first side surface towards the curved cutting corner to a maximum point extending beyond the first tangential point of the first side surface,
• wherein the rising region extends from a minimum point located between the second tangential point of the second side surface and an angle bisector of the curved cutting corner to the maximum point of the first cutting edge, thereby resulting in a cutting insert with a rotationally symmetrical form having identically configured cutting edges, and
• wherein the top surface further includes a plurality of symmetrical planar seating regions disposed about a central fastening hole in a rotationally symmetrical manner with respect to the angle bisector.

A cutting insert, comprising:

• a top surface and a plurality of side surfaces;
• a plurality of cutting edges;
• a first cutting edge formed at an intersection between the top surface and a first side surface, the first cutting edge merging into a curved cutting corner at a first tangential point;
• and
• a second cutting edge formed at an intersection between the top surface and a second side surface, the second cutting edge merging into the curved cutting corner at a second tangential point,
• wherein each cutting edge includes a sloping region and a rising region, and
• wherein the sloping region linearly increases in height along the first side surface towards the curved cutting corner to a maximum point extending beyond the first tangential point of the first side surface,
• wherein the rising region extends from a minimum point located between the second tangential point of the second side surface and an angle bisector of the curved cutting corner to the maximum point of the first cutting edge, thereby resulting in a cutting insert with a rotationally symmetrical form having identically configured cutting edges, and
• wherein the cutting insert comprises four cutting edges arranged at right angles to one another, and four curved cutting corners connecting the cutting edges.