COMPUTER CONTROLLED COLD-FORMING OF SHIP FRAMES

The report deals with one aspect of the attempt to make the shipbuilding process less labor intensive and more capital intensive. Particularly, it concerns the design of a computer-controlled system for the cold-forming of ship frames. The cold-forming of complex structural profiles of non-symmetrical cross section is analyzed, and a machine is described which will permit cold forming of profiles by a method based on the production of a series of local deformations by means of pure moment bending rather than the more conventional three point bending. The use of pure moment bending permits the separation of the plane of moment application and the plane of deformation. This permits the design of a machine with the unique capability of bending beams with symmetrical and non-symmetrical cross-sections without out-of-plane deformation. A second advantage of this new bending process is the uniformity of the bending moment and the absence of shear forces in the bent section of the beam.

• Supplemental Notes:
  • Prepared for NSF Industrial Automation Conference Stanford Research Center, March 27, 1974.
• Corporate Authors:

  Case Western Reserve University

  Department of Civil Engineering
  10900 Euclid Avenue
  Cleveland, OH  United States  44106
• Authors:
  • Mergler, H W
  • Wright Jr, D K
  • Kicher, T
  • Savage, M
• Publication Date: 1974-3-27

Media Info

• Pagination: 39 p.

Subject/Index Terms

• TRT Terms: Cold forming; Numerical control; Ship structural components
• Old TRIS Terms: Frame bending machines
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00128770
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NSF/RA/T-74-059
• Contract Numbers: NSF-GI-35994
• Files: TRIS
• Created Date: Jan 21 1976 12:00AM