Method for manufacturing an inner cutter for an electric shaver

Details Method for manufacturing an inner cutter for an electric shaver Method for manufacturing an inner cutter for an electric shaver

B - Operations, Transporting

21

D

B21D 53/64 (2006.01) B23P 15/40 (2006.01) B26B 19/04 (2006.01)

Patent

CA 2500634

A method for manufacturing an inner cutter for a reciprocating electric shaver, including the steps of: forming a plurality of slits in a thin plate; forming ribs by pressing bridging-portions that remain between the slits so that each rib extends for the length of each bridging-portion and forms a protruding portion that protrudes in the width direction, thus obtaining an intermediate worked member; deep drawing the intermediate worked member that has the ribs into substantially an arch shape with the protruding portions of the ribs facing outward; and grinding the outer surface of the arch-form intermediate worked member, thus forming cutting edges which have blade surfaces and acute rake angles in the protruding portions.

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