topic Re: modify a coil to follow the inside of a flared cylinder in Fusion Design, Validate & Document Forum

modify a coil to follow the inside of a flared cylinder

scottafriedman — Wed, 07 Apr 2021 02:32:12 GMT

This is my 2nd post and still learning, so bare with me. I have attached the file below, but also included a picture of a model that I am designing. I am trying to get the coil to follow the path of the cylinder. Here is what I am wanting the inside of the end product to look like:

So far I have this as my main design:

I am trying to get the coil to follow the inside path of the flared cylinder to look like the first picture. I am not sure what the technical term would be to search the forums. Please help. Thank you!

Re: modify a coil to follow the inside of a flared cylinder

davebYYPCU — Wed, 07 Apr 2021 04:54:00 GMT

Can you link to the Thingiverse file, for dimensions of the internal cuts.

Re: modify a coil to follow the inside of a flared cylinder

scottafriedman — Wed, 07 Apr 2021 14:58:34 GMT

@davebYYPCU

https://www.thingiverse.com/thing:1784377

thank you!

Re: modify a coil to follow the inside of a flared cylinder

jhackney1972 — Thu, 08 Apr 2021 00:01:23 GMT

I have attached two models, one with the spirals cut where the slots go through the component and one where they are not since I had no idea which way you wanted it. It is an easy process to change, just drag features in the timeline. I used a circular profile for the spiral as I could not keep the profile from twisting along the sweep axis. I took out all you moves as the Align command works so much better and does not clutter the timeline. If you need further explanation on the process I used, just let me know.

Re: modify a coil to follow the inside of a flared cylinder

scottafriedman — Thu, 08 Apr 2021 20:04:34 GMT

Thank you. I have been playing with the model you created. Is there a way to make the those spirals into blades? Like the blades in the first picture?

Re: modify a coil to follow the inside of a flared cylinder

jhackney1972 — Thu, 08 Apr 2021 23:01:50 GMT

No, I am afraid not. As I mention in my earlier post I had to use a symmetrical shape in my path because I could not find a way to prevent the profile from rotating as it was sweep along the path. In the screen capture below, I have removed all the bodies except one of the sweeps. I changes the profile sketch to a sort of teardrop wedge. As you can see where the sweep begins, red arrow, it the wedge is pointing out, which is what you want but by the end of the sweep it has rotated almost of 90 degrees. I wish I why it does this since the sweep definition does not call for a twist in the profile. Sorry I could not accommodate your needs.

Re: modify a coil to follow the inside of a flared cylinder

scottafriedman — Sat, 10 Apr 2021 00:36:34 GMT

John,

No apologies necessary. I appreciate your help. I have been trying to play around with the coil feature and modifying a coil to twist almost vertically like in this screenshot:

Re: modify a coil to follow the inside of a flared cylinder

jhackney1972 — Sat, 10 Apr 2021 02:10:20 GMT

Came up with a different idea. The attached model flights can be modified for their length, spiral and pattern. The only reason for the yellow in the timeline is that I have the spiral flights going through the slots. If you suppress the slots, the timeline is clean. Getting late but I wanted you to see my progress. Model attached. Edit: had to attach the right model.

Re: modify a coil to follow the inside of a flared cylinder

jhackney1972 — Sat, 10 Apr 2021 02:17:10 GMT

Here is a better one with the flights on the inside of the flared body instead of penetratingly the walls.

Re: modify a coil to follow the inside of a flared cylinder

scottafriedman — Sun, 11 Apr 2021 19:13:53 GMT

That is excellent! I was trying to figure out how you did it so I could modify the sweep path to start just above the slots. I couldn't figure out how to do that. What I did figure out was how to cut the tops of the coil so they look like fins. I also made the coils thinner.

Can you explain how to modify the sweep path? Whatever I tried, didn't work.

Thank you!

Re: modify a coil to follow the inside of a flared cylinder

jhackney1972 — Sun, 11 Apr 2021 19:44:28 GMT

Take a look at this one, make comments, and then I will create a Screencast on how to modify the sweep height. I started the fins above the slots and made them 0.5mm thick. I improved the outside look by re-creating your inside surface. If I do not hear back from you soon, I will processed to do the Screencast as is.

Re: modify a coil to follow the inside of a flared cylinder

scottafriedman — Sun, 11 Apr 2021 20:46:32 GMT

That looks great! The only thing I would change would be to add my cuts back in on the fins.

Re: modify a coil to follow the inside of a flared cylinder

jhackney1972 — Sun, 11 Apr 2021 22:48:20 GMT

The Screencast is rather long since I did the complete model change. I have attached the model created during the Screencast. I hope I pointed out the places along the way where you can adjust the vane size and spiral.

Please consider pressing the Accept Solution icon if you feel this post has been finalized.

Re: modify a coil to follow the inside of a flared cylinder

scottafriedman — Sun, 11 Apr 2021 23:20:46 GMT

Thank you so much! This is excellent. I have only used fusion for a bout 2 weeks and picking up all the intricate details of how to manipulate things. I have been watching a lot of videos and reading posts. Thank you for posting the instructions. I believe in teaching a man to fish vs giving him the fish. Several light bulbs went off in my head when I was listening to the video that gave me a better understanding of how you did each part. I definitely made things more complicated than I needed to.

Thank you again!