Creo 3 Variable Rib Heights 1

ZStrick · May 13, 2024

I am trying to model ribs similar to those shown in the attached picture. The rib tool functionality seems to be limited here as all the ribs are the same height from their respective surface, not all meeting on some imaginary plane. Creating planes offset each surface leaves bad match-ups between ribs at each corner and does not work on the curved surfaces. I have also tried variable pull direction drafts from a projected grid and then thickened them, but this method is finicky, tedious, and sometimes does not work. Is there a functionality built into ribs that I am unaware of or another way to do this efficiently in Creo 3? Thank you!

3DDave · May 13, 2024

I would probably hammer it out the old-fashioned way rather than fight anatomical features. Create a plane, intersect with the wall, create an offset curve to get the desired variable height and follow the curves with a solid feature.

Does that seem tedious? Yes. Yes it is. But after the first couple, you will have better control. Either do all the intersections first, or copy the interior surface and use that copy so the intersections of the surface with planes aren't interrupted by creating the ribs.

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Creo 3 Variable Rib Heights 1

ZStrick

Mechanical

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3DDave

Aerospace

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