Trim Line Determination In A Deep Draw Manufacturing of A Sheet Metal Part
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United States of America Patent
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Issued Date -
Dec 5, 2013
app pub date -
May 29, 2012
filing date -
May 29, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Methods and systems of determining a trim line in deep draw manufacturing of a sheet metal part are disclosed. A computerized model of a sheet metal part and the addendum surface geometry are defined. At least one flange portion in the computerized model is identified. Perform a numerical simulation of unfolding of the flange towards the addendum surface by applying a first set of numerical loads to each pair of adjacent finite elements. The first set of numerical loads is configured for flattening out the pair of finite elements with a bending moment determined using relative orientations of the pair finite elements and material properties of the part. A second set of numerical loads is applied to close any remaining gap between the unfolded flange and the addendum thereafter. The outer edge of the flange portions in their final unfolded configuration is designated as a trim line.
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