METHOD OF MANUFACTURING SEGMENT FOR FLAT COMMUTATOR

摘要

A method of manufacturing a segment (3) for a flat commutator, comprising the steps of forming a theta section bar (15) having the same cross sectional shape as that of the segment (3) by drawing, punching out the theta section bar (15) in a direction Z perpendicular to a drawing direction X to form the segment (3) for the flat commutator, wherein the drawing direction X for the theta section bar (15) is aligned in the generally same direction as the slidable contact direction of a brush on the segment (3) and a draw-finished surface is formed to be used as a brush sliding surface (4) of the segment (3), and an anchor part (14) forming an extraction stopper for the segment (3) is formed on the theta section bar (15) in drawing, whereby the segment for the flat commutator capable of preventing the leakage of resin in a resin mold process can be easily manufactured at a low cost.