Patent ID: 8696408
Filing Date: 2014-04-15
Classification: B23C,B23P,B24B,B24D

Abstract:
1. A method for manufacturing a formed cutter having a blade on a tip side of the formed cutter, the blade having a cutting part and a flute alternately disposed and rotating around a rotation axis to perform cutting, said method comprising: forming a depression and a projection on a blade forming part, the depression and the projection having different diameters and being arranged in a direction of the rotation axis; forming the flute on the blade forming part; and forming a rake face on a side wall of the flute by bringing a pencil-shaped grinding tool in line contact with the side wall of the flute along a depth direction of the flute while rotating the pencil-shaped grinding tool around an axial center of the pencil-shaped grinding tool, wherein in said forming of the rake face, the pencil-shaped grinding tool is moved relative to the blade forming part along the flute such that the pencil-shaped grinding tool rotates around the axial center of the pencil-shaped grinding tool in line contact with the side wall of the flute, and wherein in said forming of the rake face, the pencil-shaped grinding tool is moved in a direction perpendicular to a moving direction of the pencil-shaped grinding tool relative to the blade forming part so as to vary a displacement amount of a position of the axial center of the pencil-shaped grinding tool with respect to a radial direction of the blade forming part in accordance with a profile of a cutting edge of the cutting part.