CUP, CUP FORMING APPARATUS AND RELATED METHODS

摘要

The invention relates to a method of manufacture of a plug (100) for use in a plug assisted forming process to manufacture an article (300) from a sheet of material (200). The method comprising the steps of establishing formed reinforced zones (330) of the article to be manufactured, mapping the reinforced zones to a corresponding pre-formed reinforcement zone on the sheet (260) of material and creating a plug having a configuration for initial impingement on the sheet of material at the pre-formed reinforcement zone of the plug (160) and recesses not having an initial impingement to prevent contact with the sheet of material.