METHOD OF MANUFACTURING OUTER CUTTER OF ROTARY ELECTRIC SHAVER

摘要

A method of manufacturing an outer cutter of a rotary electric shaver that includes the outer cutter and an inner cutter which is slidingly in contact with a bottom surface of the outer cutter and rotates, in which a plurality of the circular shaving surfaces are integrally formed in the outer cutter in a concentric manner, and round hole-shaped hair introduction openings are formed in at least one of the circular shaving surfaces includes (a) a step of grinding or polishing a predetermined position where the round hole-shaped hair introduction openings are formed in the circular shaving surface to obtain a thickness size smaller than an inner diameter size of the round hole; and (b) a step of forming the round hole-shaped hair introduction openings in the position where the grinding or the polishing is performed by pressing, after the step (a).

主权项

1. A method of manufacturing an outer cutter of a rotary electric shaver that includes the outer cutter which has a circular shaving surface as a top surface where numerous hair introduction openings are formed and an inner cutter which has a small cutter slidingly in contact with a bottom surface of the outer cutter from below of the shaving surface and rotates, in which a plurality of the circular shaving surfaces are integrally formed in the outer cutter in a concentric manner, and round hole-shaped hair introduction openings are formed in at least one of the circular shaving surfaces, the method comprising:
(a) a step of grinding or polishing a predetermined position where the round hole-shaped hair introduction openings are formed on the circular shaving surface to obtain a thickness size smaller than an inner diameter size of the round hole; and (b) a step of forming the round hole-shaped hair introduction openings in the position where the grinding or the polishing is performed by pressing, after the step (a).