Patent ID: 7219411
Filing Date: 2007-05-22
Classification: H01R,H02K,Y10T

Abstract:
1. A method for manufacturing a commutator, the method comprising: rotating an unfinished commutator product about a central axis of the unfinished commutator product, wherein the unfinished commutator product includes a plurality of commutator segments, each of which axially extends along an outer peripheral surface of the unfinished commutator product between a first axial end and a second axial end of the unfinished commutator product and includes a coil connection at a location adjacent the second axial end of the unfinished commutator product; and axially moving at least one of a cutting tool and the unfinished commutator product to create relative movement of the cutting tool along a cutting region of the outer peripheral surface of the unfinished commutator product from the first axial end of the unfinished commutator product toward the second axial end of the unfinished commutator product while the unfinished commutator product is rotated, so that an outer surface of each commutator segment is cut from a cutting operation start point to a cutting operation end point of the commutator segment, wherein: