Plural sheet superplastic forming equipment and process
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jan 13, 2004
Grant Date -
Mar 13, 2003
app pub date -
Sep 10, 2001
filing date -
Sep 10, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Superplastic forming tools and method in which pairs of stacked metal blanks are serially loaded between heated forming dies that are moved to a closed position on each of the pair of blanks so that a partial perimeter gas seal is established therebetween. A pressure wedge is then introduced between the two blanks along one edge of the pair to act as a stopper or air seal to complete perimeter sealing thereof. The pressure wedge also establishes the operative position of a gas injection port, which directs pressurized air interiorly of the completed perimeter seal of the pair of blanks to force the blanks in opposite direction for the superplastic forming of a pair of discrete parts. The wedge and forming dies are then opened for the removal of a pair of formed parts and for the subsequent loading of additional pairs of stacked sheets for their simultaneous superplastic forming into pairs of parts. With this construction and process, the output of superplastic forming equipment can be multiplied for improved efficiency and for improved formation of parts.
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