FULLY-AUTOMATED GENERATION OF FIXED-ANGLE ADDENDUMS FOR USE WITH SHEET FORMING MANUFACTURING
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United States of America
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Issued Date -
Feb 20, 2025
app pub date -
Aug 15, 2023
filing date -
Aug 15, 2023
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Abstract
A computer-implemented method of generating an addendum surface for use in forming a sheet metal part by using an Incremental Sheet Forming (ISF) manufacturing process, wherein the method includes: providing a Computer Aided Design (CAD) geometry of the sheet metal part to be formed; and generating an addendum surface that surrounds and extends the CAD geometry; wherein the addendum surface has a constant slope everywhere and has no regions of self-intersection. The addendum surface can be used to manufacture a male and/or a female underform tool for use in the ISF process, such as Two-Point Incremental Forming (TPIF). The addendum surface has a user-specified constant design wall angle, θc, which can be selected to prevent tearing of sheet metal parts during ISF due to excessive thinning at large wall angles (i.e., wall angles greater than 60°).
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