Patent ID: 10279395

Abstract:
A cutting tool 1 includes a cutting edge 2, a rake face 4 and a flank 5 and is used for cutting a surface of a cylindrical or columnar work W by a skiving process. The cutting tool 1 is configured to satisfy a relational expression: tan−1(cos β/cos(α−β)×tan−1(cos−1(r′/r))<φ≤90° where “φ” denotes a rake angle, “α” denotes an inclination angle of the cutting edge 2 with respect to the rotation axis A, “β” denotes an angle between a feed direction of the cutting tool 1 and a direction orthogonal to a rotation axis A in a plane view of the cutting tool 1 and the work W, “r” denotes a radius of an outer circumferential surface of the work W before processing, and “r′” denotes the radius of the outer circumferential surface of the work W after processing.