Reciprocating razor blade cartridge and manufacturing method

A reciprocating razor blade cartridge comprising a fixed blade and a fixed blade support for supporting and fixing the fixed blade, wherein the fixed blade is a flexible metal sheet having flexibility, the fixed blade support is a basin-shaped support, the fixed blade is supported by a basin opening edge of the fixed blade support, all sides of the fixed blade are bent downwards and wrapped on the outside of a basin wall all around the fixed blade support and make a top surface of the fixed blade and a side surface close to the top surface smoothly transition, an inner cutting cavity is formed between the fixed blade and the fixed blade support, hair inlet holes for body hair to enter the inner cutting cavity is provided on the fixed blade, and a movable blade which can reciprocate back and forth relative to the fixed blade and then cut off the body hair in the hair inlet holes are provided in the inner cutting cavity below the fixed blade, the movable blade is provided with cutting teeth corresponding to the hair inlet holes and used for cutting body hair, and the reciprocating razor blade cartridge further comprises a transmission component which passes through the bottom of the fixed blade support to connect the movable blade with the power device of the electric razor.