Cutting insert with evolutive wedge or clearance angle and toolholder using such a cutting insert

A cutting tool, comprising:

• a cutting insert, the cutting insert having a top surface including a land surface adjacent to a top edge portion, a side surface including a clearance surface and a clearance edge portion, wherein a cutting edge is defined by an intersection of the clearance edge portion and the land surface, the clearance edge portion forming a clearance angle with a central axis of the insert and the clearance edge portion and the top edge portion forming a wedge angle such that the wedge angle varies as a function of circumferential position about a central axis of the insert relative to a point on the cutting edge, the cutting insert being indexable to a plurality of different indexing positions, and wherein clearance angle varies as a function of circumferential position about the central axis of the insert relative to the point on the cutting edge and the wedge angle varies between a maximum and a minimum value as a function of circumferential position about the central axis of the insert relative to the point on the cutting edge corresponding to each indexing position;
• and
• a toolholder having a recess in which the cutting insert is mounted so that the point on the cutting edge forms a vertex of a setting angle of the insert.