Method of manufacturing a cup-shaped article

摘要

A method for manufacturing a cup-shaped article (17) includes making the thickness of a cylinder portion of a cup-shaped configuration (15) uniform, between a step of drawing a flat plate material portion (24) into a cup-shaped configuration (16) and a step of ironing the cup-shaped configuration (15) into a final cup-shaped article (17). Increasing the thickness may be performed by coining or axial compression. The thickness increasing step may be replaced by a step, provided prior to the drawing step, of providing a plate material portion (25, 26) having a greater thickness at a radially inner portion than at a radially outer portion. <IMAGE>