Hello gurus
I am trying to create a Cap in sheetmetal because the process resembles the making of a milk carton.
We start with a flat paper cloth, fold in half, bend the ends together into Seam SSn-1 and stich it, the upper end (see closed fold image) is stitched and the upper section is folded into a triangle frame shape.
I am stuck creating the triangle frame using boundary blend and cant match the geometry inside the cap, Makes me wonder if I there is a better way to model it in sheetmetal. At the end, i would flatten but not all features flatten either.
If anyone has modeled a milk carton or similar, it would certainly help
thanks
They key here is that only surfaces that can be developed will flatten in sheet metal. You can check your surfaces in Creo by analysis of the Gaussian curvature.
In mathematics, a developable surface is a smooth surface with zero Gaussian curvature. It is a surface that can be flattened onto a plane without distortion (i.e. it can be bent without stretching or compression). Your boundary blend is almost certainly not developable, check the Gaussian curvature to confirm.
The flat pattern for a milk carton will be similar to this:
