METHOD AND APPARATUS FOR FORMING END PANELS FOR CONTAINERS AND END PANELS FORMED THEREBY

摘要

A method of forming a container end panel having a countersink radius (R) and a chuckwall (CW) including preforming the radius and the chuckwall so that the chuckwall includes a straight wall portion (CW1) tangent to the radius and reforming and reducing the radius without tooling restraint while holding pressure against the straight wall area. Apparatus for performing the method includes a punch core (12) and a cooperating die core ring (63) having complimental geometry for forming the chuckwall and radius configuration. The article formed by the method and apparatus includes an end panel having a straight wall portion (CW2) between the normal tapered wall portion and countersink radius.