Methods and Systems for Designing Addendum Section of A Die in Sheet Metal Forming
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United States of America Patent
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Issued Date -
Feb 14, 2013
app pub date -
Aug 11, 2011
filing date -
Aug 11, 2011
priority date (Note) -
Abandoned
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Abstract
An improved method of creating a computerized numerical model representing addendum section is disclosed. Computerized numerical model is created by placing a plurality of surface patches at disjoint locations along an enclosed trim line of the product design surface and corresponding binder opening line. Each surface patch is bounded with top and bottom edges coincided with the enclosed trim line and the binder opening line, respectively. Each surface patch is further bounded with two side edges connecting corresponding ends of the top and bottom edges. To ensure a continuously smooth transition between the product design surface and the binder surface, a number of parameters are adjusted for each surface patch to obtain a desired surface geometry. Any gap between a neighboring pair of surface patches is filled with a filler patch using a blending procedure that ensures continuous smooth transition from two neighboring side edges of the neighboring pair.
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