Patent ID: 9162276
Filing Date: 2015-10-20
Classification: B21D,B21H,B23P,B64C

Abstract:
1. A method of manufacturing an article, the method comprising: machining a single metal sheet to remove metal material from the metal sheet, the metal sheet originally being a flat sheet having a first surface and second surface with a thickness therebetween, the machining of the metal creates a scaled feature and a frame portion, the scaled feature being a thickness step change on the first surface, the scaled feature including a periphery and a thickness profile with a greater thickness than a relatively thin section surrounding the scaled feature, the frame portion being approximately uniform thickness around an edge portion of the metal sheet and surrounding the relatively thin section and the scaled feature; creating a plurality of tooling holes in the frame portion; brake forming the metal sheet, subsequent to the step of machining the metal sheet, so as to fold the metal sheet around a brake die to establish an outer radial portion on the second surface of the metal sheet; and stretch forming the metal sheet, subsequent to the step of brake forming the metal sheet, so as to distort the scaled feature by stretching the metal sheet by pulling the frame portion away from the outer radial portion.