US Patent 7552535 Method of forming hydroformed member with opening
Patent 7552535 was granted and assigned to Magna International on June, 2009 by the United States Patent and Trademark Office.
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A method for manufacturing a hydroforming member includes the step of providing a blank (10). The blank (10) is defined by blank wall (16). The blank (10) is placed in a die assembly (14) having a die cavity (12) defined by a die surface (24). The blank (10) is expanded so that the blank wall (16) is forced against the die surface (24) to form the hydroformed member. A portion of the blank wall conforms against a wall-thinning element (26, 28) positioned along the die surface (24) to form a removable wall section (46, 50) in a portion of the blank wall (24). The removable wall section (46, 50) is then removed from the blank wall (16) to form an opening in the hydroformed member.
US Patent 07552535 Method of forming hydroformed member with opening US Patent 7552535 Method of forming hydroformed member with opening
US Patent 07552535 Method of forming hydroformed member with opening
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