Patent ID: 7331206

Claim:
A method of fabricating a component having internal teeth, comprising the steps of: inserting a cylindrical material for forming a component having internal teeth into a rotatably driven container in an approximately aligned manner; placing said container through a radial bearing on a base; rotatable driving a rolling tool having external teeth to be pressed against an inner side of said cylindrical material to fabricate an inner teeth by rolling and a rolling tool rotational shaft rotatable driving said rolling tool; pressing and deforming the cylindrical material between an outer circumference of said rolling tool and an inner circumference of said container to successively grow a tooth profile while forcibly changing a center distance between said rolling tool rotational shaft and a rotational axis of said container by relatively moving said rolling tool rotational shaft forcibly as the external teeth of said rotatable driving rolling tool rotational shaft are being pressed against an inner face of said cylindrical material; completing rolling in a state where the cylindrical material fills said container as a result of an enlarged outer diameter by spreading; and discharging a processed component having internal teeth from said container.