Milling cutter and machining method using the same

A machining method using milling cutter for performing surface machining on a workpiece with a milling cutter including a tool body having an approximately cylindrical or disk-like shape and a plurality of edge portions provided on at least an outer peripheral portion of one end of the tool body at predetermined intervals along a circumferential direction,

• at least one of the edge portions having a first cutting edge and a second cutting edge performing an operation of cutting the workpiece, the first cutting edge being positioned outside the second cutting edge in a radial direction, the second cutting edge having a cutting edge angle with respect to a plane orthogonal to a center axis of the tool body, and the cutting edge angle being an elevation angle open outward in the radial direction, and
• the surface machining being performed on the workpiece with the milling cutter tilted such that a center axis tilted forward with respect to a feed direction toward the workpiece and an angle formed by the second cutting edge of the at least one of the edge portions and a feed plane during the cutting operation is maintained to be an elevation angle open outward in the radial direction and is in a range of 0.025 degree to 0.11 degree.