How to create a wave pattern on a cylinder

[ianhughes7UFVF]

Hi

I am trying to reproduce the wave pattern on this design:

The wave shape has 6 peaks and sits between 21.5 and 25mm.

I have created the basic shape in fusion:

But to create the dips I am not sure about.

My mind thinks I would find it easier to do a sheet metal unfold and create the 6 dips and 6 bumps in that, and rewrap it.

Is that how I should do it or is there a correct way.

Any directions would be appreciated.

Regards

Ian

[TrippyLighting]

See here for example

[g-andresen]

Hi,

This can best be done as a sheet metal construction, like here.
The wave profile was created freehand without dimensions.

günther

[TrippyLighting]

Here's another modeling approach:

[laughingcreek]

This thread my be of some interest to you also-

https://forums.autodesk.com/t5/fusion-360-design-validate/fluted-zig-zag-edge/m-p/8759722

[ianhughes7UFVF]

Hi

I have completely forgotten how to do this but like your example I created the split cylinder and in sheet metal I am trying to unfold it.

When I select unfold the cylinder goes transparent and becomes non workable.

Any help would be great. I am sure I have missed a vital step.

Regards

Ian

[davebYYPCU]

To fold and unfold, you have to create Sheet Metal bodies, 

but I prefer Trippys method.

Might help....

[ianhughes7UFVF]

Hi

I am having trouble with the Sculpt method and would like to try Gunther's method, but I carn't see exaclty how he did it.

I can see a split circle that creates the split in the solid, but I carn't see how he goes from there to the unfold.

This is the missing part that would help me create the part.

Could you do a step by step Gunther at all?

Regards

Ian

[TrippyLighting]

---

@ianhughes7UFVF wrote:

Hi

I am having trouble with the Sculpt method...

---

Maybe you want to take a step back and NOT look for a different method until you've mastered to implement this one and fully understand what it does.

Once you understand the limitation of the method itself (and not just you own limitations in implementing it) you will be much better equipped to make decision yourself as to which method might be appropriate to solve a particular problem.

[g-andresen · Accepted solution]

Hi Ian,

here is the file:

günther

Note: Do it, as @TrippyLighting  sayd, with both methods.

[ianhughes7UFVF]

Hi

Still unable to create the flat pattern in the sheet metal side of fusion I watched a video on youtube where the chap created a flat pattern from a cylinder.

He explained that fusion doesn't like to make flat patterns from cylinder shapes so he found the split edge of the cylinder and created a sketch on it and extruded a micro surface from it. Then selecting 'create a flat pattern' he was able to flatten the surface out.

Well I tried making the cylinder from scratch and create a sketch and extrude on the flat surface but the 'create flat pattern' won't do anything.

This intends to fight me I think.

Helllllppppp 🙂

Regards

Ian

[davebYYPCU]

Did you read message no.7 above, or forget, 

You need a sheet metal body, to allow a sheet metal function to operate, this file has a solid body.

Might help....

[ianhughes7UFVF]

Hi

I didn't get a notification of those messages, but I just tried Gunthers method and it works.

Sorry about that, a bit slow on my end.

Regards

Ian

[MichaelT_123]

Hi Mr Ian Hughes,

The simple universal method:

- create XY sketch 

- create two line segments with angles in XY, XZ, YZ to suit your needs

- create two circular patterns out of them

- loft a surface using resulting lines

- cut your (designed) body 

Please find attached file. It should be self explanatory

https://a360.co/2ZywpEw

Regards

MichaelT

[g-andresen]

Hi Peter,

thank you for your suggestion.

Here is a result that came out of it:

günther