Cutting insert and cutting tool comprising cutting insert

A cutting tool comprising

• a toolholder including a toolholder pocket having a pocket wall, the pocket wall comprising a first anti-rotation engagement surface and a second anti-rotation engagement surface;
• and
• a cutting insert mounted in the toolholder pocket, the cutting insert comprising:
• an upper surface, the upper surface having one or more circular sinusoidal cutting edges and one or more circular cutting edges;
• a lower surface opposite the upper surface;
• and
• an exterior sidewall between the upper surface and the lower surface,
• wherein the first anti-rotation engagement surface and the second anti-rotation engagement surface of the pocket wall of the toolholder engage the exterior sidewall of the cutting insert to resist rotation of cutting insert.

A cutting insert comprising:

• an upper surface having a periphery;
• a lower surface opposite the upper surface;
• and
• an exterior sidewall between the upper surface and the lower surface,
• wherein the upper surface has a plurality of circular sinusoidal cutting edges extending about an entire periphery of the upper surface, each of the plurality of circular sinusoidal cutting edges formed by a sinusoidal waveform comprising a crest and a trough extending from a central aperture to the periphery of the upper surface, and
• wherein the lower surface has a plurality of polygonal edges.