Kardanwelle und Verfahren zum Herstellen derselben

摘要

A propeller shaft 1 comprising a shaft main body 10 and a yoke 20 which is mounted to the shaft main body 10 with a serrated inserting portion 21 thereof being press fitted into an inner circumferential surface of the shaft main body 10 is constructed such that serration fit-in grooves 11 having extending portions 11b into which serration teeth 22 travel when the yoke 20 is allowed to sink into the shaft main body 10 are formed in advance in the inner circumferential surface of the shaft main body 10. A method for producing the propeller shaft 1 comprises a yoke press fitting step and a yoke withdrawing step that is to be performed after the former step.