Patent Number: 6,305,204

Title: Bulge forming machine

Abstract: A forming device having a fluid source for providing a pressurized fluid, a strongback having a die cavity, a tubular workpiece having a hollow interior, a die and a mandrel assembly. The die is formed from a plurality of mated die components and includes an internal cavity which is configured to correspond to a predetermined tube profile. The die is at least partially disposed in the die cavity and surrounds at least a portion of the tubular workpiece. The mandrel assembly is disposed at least partially within the hollow interior of the tubular workpiece in an area proximate the die and is in sealing engagement with the hollow interior of the tubular workpiece. The mandrel assembly includes at least one feed aperture that is in fluid connection with the fluid source. The feed aperture directs the pressurized fluid against the hollow interior of the tubular workpiece to cause the tubular workpiece to expand into the internal cavity. A method for forming a tubular workpiece having a hollow interior is also provided.

Inventors: Tauzer; Paul J. (Petosky, MI)

Assignee: The Boeing Company

International Classification: B21D 26/02 (20060101); B21D 26/00 (20060101); B21D 026/02 ()

Expiration Date: 10/23/2018