Sanjo Machine Works, Ltd.

Hiroyuki Kariya

Kazushi Goi

Takahiro Sekine

Ryo Kurosawa

Fumihiko Hattori

In a method for manufacturing a shaft, and surfaces of a pair of metal sheets are polished, and the metal sheets are each bent into a cylindrical or arcuate shape. The polished end surfaces of the metal sheets are butted together with the end surfaces facing each other. The butted end portions are diffusion-joined, thereby forming a cylindrical member. The cylindrical member is cooled, and ends of the cylindrical member are joined to linking members to form the shaft.

Method for manufacturing shaft

A method for manufacturing a shaft, whereby a hollow shaft in which linking members are joined at both ends of a cylindrical member (a pipe member) can be manufactured more efficiently. A method for manufacturing a shaft in which linking members are provided to end parts of a cylindrical member, wherein the method comprises: a preparation step for preparing the cylindrical member, in which male threaded portions are formed at the end parts; a screwing step in which the linking members, which have female threaded portions to be screwed onto the male threaded portions, are screwed onto the male threaded portions; and a diffusion-joining step in which opposing end surfaces of the linking members and the cylindrical member are heated in a state of being pressed against each other by the tightening produced by the screwed-on linking members, and the opposing end surfaces are diffusion-joined.

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Sanjo, Japan

Hiroyuki Kariya