Method of grinding a parting/grooving insert and a parting/grooving insert

A method of grinding a parting/grooving insert by rotating a grinding wheel including a plane grinding surface, having a normal vector parallel to an axis of rotation and a tangential direction of rotation in the grinding surface plane, comprising:

• providing a parting/grooving insert, the insert including a rake surface, a main clearance surface, and a main cutting edge formed between the rake surface and the main clearance surface, wherein the parting/grooving insert includes left and right side clearance surfaces, a left side cutting edge formed between the rake surface and the left side clearance surface, and a right side cutting edge formed between the rake surface and the right side clearance surface;
• for each respective clearance surface including the main clearance surface, left side clearance surface, and right side clearance surface, orienting and positioning the parting/grooving insert relative to the plane grinding surface such that the respective clearance surface is parallel to the plane grinding surface, and such that a normal vector of the respective cutting edge, as seen in a plane of the respective clearance surface and in the direction of rotation, forms an angle to the tangential direction of rotation at the position of the parting/grooving insert, the angle being at least 20 degrees and less than 70 degrees from a parallel orientation;
• and
• grinding each of the main clearance surface, left side clearance surface, and right side clearance surface to provide grinding marks having an angle to the normal vector of each respective cutting edge corresponding to the angle to the tangential direction of rotation.