Abstract: A method for producing a wheel rim of an automotive vehicle comprising the steps of supporting a cylindrical body on a vertical axis between an upper punch attached to an upper mold and a lower punch attached to a lower mold; fitting a side die to an outer peripheral surface of the cylindrical body, with the cylindrical body supported; then lowering the upper punch together with the upper mold to insert the upper punch into an upper portion of the cylindrical body and to form the upper end portion of the cylindrical body into the flange portion by press forming between the upper punch and the side die; thereafter releasing the cylindrical body from the supported state at its lower end surface; and further lowering the upper punch together with the side die and the cylindrical body to insert the lower punch into a lower portion of the cylindrical body and to form the lower end portion of the cylindrical body into the flange portion by press forming between the lower punch and the side die, whereby the working

Abstract: A method and a system for forming a rod-like member into a three-dimensional frame structure, involving a work feed station for individually feeding a rod-like member, a bending station for bending the rod-like member having a prescribed length into a two-dimensional frame structure, a welding station for welding two mutually abutting ends of the two-dimensional frame structure of the rod-like member; and a forming station for plastically forming the two-dimensional frame structure into a three-dimensional frame structure. Typically, the two dimensional structure comprises a loop structure formed by joining two opposite ends of the rod-like member by welding, and the rod-like member consists of a pipe member. Thus, by welding the mutually abutting parts of the rod-like member together when it is formed into a two-dimensional frame, retaining the rod-like member for the welding is simplified as it involves the retaining of the rod-like member against its positional variations only in one direction.