Method of correcting track of cutting edge, recording medium, and program

A method of correcting a track of a cutting edge for machining by cutting a rotation symmetry plane of a rotating workpiece, the cutting edge being set obliquely to an axial line of rotation of the workpiece and moved in a direction inclined with respect to the axial line of rotation while the cutting edge is in contact with the rotation symmetry plane, with movement of the cutting edge, a point on the cutting edge in contact with the rotation symmetry plane being moved along the cutting edge from a first end portion of the cutting edge to a second end portion of the cutting edge opposite to the first end portion, the method comprising:

• measuring, by a measurement unit, a shape of the cut and machined rotation symmetry plane;
• calculating, by an operation unit, an error of the measured shape of the rotation symmetry plane from a target shape of the rotation symmetry plane in a direction of the axial line of rotation;
• and
• correcting, by the operation unit, a component in the direction of the axial line of rotation of the first end portion of the cutting edge based on the error.