Container, and Selectively Formed Shell, and Tooling and Associated Method for Providing Same

摘要

A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall. The material of at least one predetermined portion of the shell is selectively stretched relative to at least one other portion of the shell, thereby providing a corresponding thinned portion. The tooling includes a pressure concentrating forming surface.

主权项

1. Tooling for forming a shell, the tooling comprising:
an upper tool assembly including an upper pressure sleeve; the upper pressure sleeve including a lower end defining a pressure concentrating forming surface; a lower tool assembly cooperating with the upper tool assembly to form material disposed therebetween to include a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall; and wherein the upper tool assembly and the lower tool assembly move between a separated, first position, wherein the upper tool assembly is spaced from the lower tool assembly, and a forming position, wherein the upper tool assembly is immediately adjacent the lower tool assembly to selectively stretch the material of at least one predetermined portion of the shell relative to at least one other portion of the shell, thereby providing a corresponding thinned portion.