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A Design Study in Metal Matrix Composite Castings - AAAV Transmission Case                                           

Patterns for the Transmission Case

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Drag Pattern

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Cope Pattern

  • The patterns for cope, drag, and cores were CMC machined directly from the CAD model.
  • Patterns were cut in mahogany wood for strength, finish, and cost effectiveness.
  • The photo on the left shows the pattern for the bottom/drag mold highlighting the spline feature and the runners and gates.
  • The photo on the right shows the pattern for the top/cope mold showing the inset that forms the wall edge.

 

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Copyright 2001 by the American Foundry
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Address comments to:  jss@afsinc.org
Last Modified:September, 2001 by STG

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