Method of incremental cold forming an angled corner in a continuous sheet of advanced high strength metal

A method of incremental cold forming an angled corner in a continuous advanced high strength metal sheet, the method comprising:

• cold forming an outer bend radius in an outer position within a final arc of the angled corner of the continuous advanced high strength metal sheet with an outer bend radius male die member;
• cold forming a central bend radius in a central position spaced from the outer position and within the final arc of the angled corner of the continuous advanced high strength metal sheet with a central bend radius male die member;
• cold forming an inner bend radius in an inner position spaced from the outer position and the central position and within a final arc of the angled corner of the continuous advanced high strength metal sheet with an inner bend radius male die member;
• utilizing a progressive die forming apparatus to perform each of the cold forming and transferring operations;
• and
• transferring the angled corner between each of the bend radius male die members by manipulating the continuous advanced high strength metal sheet;
• wherein the cold forming the outer bend radius occurs before the cold forming the central bend radius, which cold forming the central bend radius occurs before the cold forming the inner bend radius.