Perpendicular Cut Feature on a spherical helix path, wanting to pattern

Perpendicular Cut Feature on a spherical helix path, wanting to pattern

NotTheBeaz
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Message 1 of 7

Perpendicular Cut Feature on a spherical helix path, wanting to pattern

NotTheBeaz
Enthusiast
Enthusiast

Using an online helix tutorial that I have done before, I have created a path that follows a helical shape over the surface of a sphere. I wanted to pattern a cut feature that is normal to the tangent of the sphere by using the pattern-along-a-path tool to create a sort of hollow honeycomb sphere shape ( although slightly more random than the generic  honeycomb pattern.  I'll be honest; I have written less perplexing paragraphs before - so to make clear for any potential solver of my problem; look at the attached images. 

 

The image titled "Cut Feature" is the feature that I want to pattern. The image titled "Plane Tangent On Path" shows the path I want the feature to be patterned along. For reference the Sphere is hollow. The shape I want to eventually achieve something similar to is titled "Honeycomb Sphere". 

 

Any help would be greatly appreciated.

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Message 2 of 7

davebYYPCU
Consultant
Consultant

Do you know the name of this geodetic shape? 

Wikipedia will have the geometry formula for it, but I don't know it's actual name.

 

Can you show me what you were going to do with a helix curve? 

whpap.PNG

There are repeating patterns / mirrors all over it, and it will be a circular pattern or 2.  I would make half - copy then joint a second hemisphere 

 

Just 3 distinct tiles, will get you there.

 

tdttmt.PNG

 

Might help.

Message 3 of 7

NotTheBeaz
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Yeah that's the problem I have no Idea what the shape is called XD. How would you apply the formula in F360 to create the shape - as far as I am aware there is no tool to convert an equation directly to a shape.

In terms of the helix curve my intention was to pattern the cut along the path. I have added 3 more images to hopefully explain the concept. 

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Message 4 of 7

davebYYPCU
Consultant
Consultant

Well your process, has no helical foundation to rely on for the .......hedron I have marked up.

 

If you are not replicating the “modified soccer ball” then pattern on a path might work, with round holes.  Appears you are not wanting the white framed ball, 

as these Hedron objects are usually circular patterns with mirrors.  Researching the right version will provide the formula to extract data,

 

you can create formula driven models, in Fusion, but you need the data.

 

Three components, duplicated and joined at known dihedral angles, search in here for soccer ball models.

 

What diameter is your sphere, and leg section size?

 

 

 

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Message 5 of 7

g-andresen
Consultant
Consultant

Hi,

take a look at the methods of Christian Laholm.

 

günther

Message 6 of 7

laughingcreek
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Accepted solution

Pattern on path has no controls to prevent twisting and to maintain alignment (like sweep does).  you are not going to get any kind of useful output from patterning on any path that doesn't go around the circumference of the sphere.  limitation of fusion.

Message 7 of 7

NotTheBeaz
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Enthusiast

A shame, but I thought that was probably the case, I have sort of figured a way around it but I wish I was good enough at python to write my own add-in scripts to solve problems like this.

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