Method and apparatus for forming blanks
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United States of America Patent
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Oct 30, 2001
Grant Date -
Jun 7, 2001
app pub date -
Dec 27, 1999
filing date -
Dec 31, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
For shaping small radii in edge and corner regions of preformed workpieces or blanks, the invention provides for a postforming of exclusively said edge and corner regions by high liquid pressure. For performing the method an apparatus has a die part (forming insert) with expansion spaces constructed in its edge and corner regions.
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