| 摘要 |
A method for forming a cup-shaped member, including a first pressing step of pressing a plate into a first cup-shaped intermediate molded body, and a second pressing step of pressing the first cup-shaped intermediate molded body into a second cup-shaped intermediate molded body having at least one annular bearing surface that extends perpendicular to an axial direction of the second cup-shaped intermediate molded body and are disposed on a radial-inward projection having an increased wall thickness. During the second pressing step, an outer circumferential periphery of the first cup-shaped intermediate molded body is ironed to facilitate plastic flow radially inwardly directed from the inner circumferential periphery thereof by restraining plastic flow directed toward an open end periphery and a bottom thereof. |
