Method of manufacturing arm member

摘要

An arm member includes a bar-like main body (10) of a predetermined shape and a joint member (26) attached to at least one end of the main body (10). A method of manufacturing the arm member includes the steps of manufacturing a hollow straight main body (10), attaching a joint member (26) to at least one end of the straight main body (10), and bending the straight main body (10) with the joint member (26) into a predetermined shape in accordance with a mounting space.