Accepted Solutions
It can be made using a single blend. Attached is a Creo 8 file. On the Options menu, set the blended surfaces to Straight to get sharp edges. The key is getting 1 additional blend vertex on each of the 4 corners of the square and 1 additional on the left/right points of the hexagon. And then getting the starting vertex in the correct location for both sketches so the edges of the blended shape don't cross one another.
Assuming you must create this geometry using Creo Blend (swept?) features then @KenFarley has suggested a good strategy. I think there may be a problem with making the second swept blend using the solid option as it will be closed geometry and congruent with the base and top of the first blend created which may cause a problem with material removal. I also see an option to use boundary blends rather than swept blend to create this geometry. Using two swept blends keeps the feature count down so I would go with that approach.
Here is a variation that will work to create the facets.
Sweep 1 as solid
Sweep 2 as surface
Use quilt of sweep 2 to cut the solid
Features required to implement this approach
@KenFarley You are correct when using the blend feature your method works using solid geometry for both features. It does not work if a swept blend is used for the hexagonal blend geometry. No geom checks in the model but it will not create the facets as needed regardless of the remove material direction selected (see pic below).
If you try with your start part to create the required facets using swept blends, does it work?
When using swept blends to create this geometry I tried multibody Boolean ops to get the facets. A Boolean intersect yields the desired results, but a Boolean subtraction does not. There is definitely something odd going on with this geometry created with a swept blend.
You can use a swept blend by adding blend points to each section. The difficult part is controlling the blend points to get desired shape.
Here is how I did it:
- Add two blend points to the square base
- Dragging them around to make two of the facets adjacent
- Drag the start points to one of the facets with the arrow pointing away from the second one.
- Add a blend point to each section and drag the points to make the next facet.
- Add a blend point to each section and drag the points, if needed, to make the final facet
The final shape, being blended, does not make flat surfaces.
It can be made using a single blend. Attached is a Creo 8 file. On the Options menu, set the blended surfaces to Straight to get sharp edges. The key is getting 1 additional blend vertex on each of the 4 corners of the square and 1 additional on the left/right points of the hexagon. And then getting the starting vertex in the correct location for both sketches so the edges of the blended shape don't cross one another.
