The invention discloses a spherical
milling cutter for
machining a stepped hole chamfer and a
machining method for
machining the stepped hole chamfer. According to the spherical
milling cutter, a spherical cutter head is smaller than or equal to a half spherical surface, the
diameter of a cutter
handle is smaller than the outer
diameter of the widest part of a maximum
cutting edge, and the axis ofthe cutter
handle is perpendicular to the end face of the spherical cutter head, so that a stepped hole can be chamfered. During machining, the axis of the spherical
milling cutter is parallel to a center hole of a workpiece, the end face of the spherical cutter head can be attached to the interface due to the fact that the axis of the cutter
handle is perpendicular to the end face of the spherical cutter head, the plane where the interface is located serves as a
cutting feed starting point, and the inner wall face of the center hole can be prevented from being
cut. Therefore, the stepped hole is chamfered through the feeding
route, chamfering of the stepped hole can be accurately and automatically completed on machining equipment, manual
polishing is not needed, labor intensity is reduced, and production efficiency is improved.