Sweep parallel on one axle and perpendicular at another axle at the same time

[guzzzt]

I want to make a body that follows a line that I made. The line is a circle around Z axle and also a wave pattern in x/y. I have then made a profile sketch at the beginning of the line (Plane along path). Think of it like a big wave washer but with a little more advanced cross section. Now I want to use the sweep tool to make the body. It should be perpendicular around the cylinder (similar to revolve) but also parallel on the wave. Instead I get that it is perpendicular for both the cylinder and the wave and I don't want that.

Is there a way to do this with the sweep tool? Or can I make it in two steps somehow, like first make a body like a "flat washer" and then add the wave as some kind of transformation afterwards?

[jhackney1972]

It would really help to try and give you an answer if you would attach your model.  If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

[guzzzt]

Hi, thank you for the replay, here is the file. I have tried to clean it up and name all bodies and sketches.

Look at the final_body from different directions and you see that there are a twist to it.

[laughingcreek]

you'll get closer to what you want by using a guide surface-

you can clean this up a bit by improving the quality of your originating geometry.

for instance this internal face -

and also improving the quality of your path, which right now is a bit janky-

the problem here started when you projected the edge of your spiraling surface to the "wave_line" sketch, and went down hill from there.  degradation of sketch curve quality when projecting is a common issue with fusion, and always needs to be checked.

also b/c of the way you defined everything, the sweep profile ended up not being parallel to the axis, so there's that also-

[johnsonshiue]

Hi Folks,

There are multiple ways to create the desirable geometry. Here is an approach with smoother faces (see attached file). There is a known issue in Guide Surface Sweep leading to excessive edges (FUS-103252). It is being investigated.

In the meantime before a fix becomes available, you may use Thicken to create the solid body. Then use Sweep circular profiles along the path to avoid the undesirable profile orientation.

Many thanks!

[laughingcreek · Accepted solution]

@guzzzt -another approach using Sheetmetal.  just for fun I made the number of waves parametric.

@johnsonshiue - the issue with the guide surface has been around since the guide surface option was introduced. are you saying there's been a renewed interest in actively looking into this, or that it's still just on the pile of things to get around to someday?

[johnsonshiue]

Hi @laughingcreek,

The defect ID I mentioned here is relatively recent. It has been investigated further, though there is no fix applied yet. Hopefully, it will be fixed soon.

Many thanks!

[guzzzt]

Thank you all for your suggestions. Amazing community with multiple great answers within a day! I will marked this as solved now and thoroughly go through the design files you have provided so I fully learn how to do this in the future.