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Punch and Die Relationships for Producing Projections

IP.com Disclosure Number: IPCOM000047907D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08

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Goodrich, RA [+details]


It is well known to form projections in sheet metal for the purpose of facilitating resistance projection welding. Special consideration must be given to the punch and die relationships when producing projections in titanium metal and projections in low carbon steel for multi-component sheet metal assemblies. Recommended hot forming techniques for producing projections in titanium are not satisfactory because uniform dimensions are not achieved consistently. The proper punch and die relationships are dependent upon the material thickness, and the projections are formed in the thicker piece where the pieces to be joined are of unequal thickness. Fig.