topic Re: Threads in Fusion Support Forum

Threads

tebawg — Mon, 02 Aug 2021 15:42:51 GMT

I tried an xml file from this posting, which is a cool set-up (https://forums.autodesk.com/t5/fusion-360-design-validate/how-can-i-make-an-internal-rms-royal-microscopy-society-0-8-quot/m-p/8888486/highlight/false).

But the angle is 60 degrees, and these are Whitworth threads, so they have to be 55 degrees. Is there a way to specify that in the xml file?

Thanks.

Re: Threads

HughesTooling — Mon, 02 Aug 2021 16:30:01 GMT

There's an article here with some info but I seem to remember it's broken at the moment so might not work.

https://knowledge.autodesk.com/support/fusion-360/learn-explore/caas/sfdcarticles/sfdcarticles/Custom-Threads-in-Fusion-360.html

Mark

Re: Threads

HughesTooling — Mon, 02 Aug 2021 16:45:54 GMT

Looking back at some of my old posts and it does look like the whitworth form custom threads are broken. Post #4 in this thread has a file that used to work but doesn't anymore, not filleting the form. And a post I made a year ago here that never got any reply!

Mark

Re: Threads

tebawg — Mon, 02 Aug 2021 16:47:46 GMT

Yes, that article link is given in the linked article referenced in the original post. But it looks like the forum mangled the link. So I'll try again: (https://forums.autodesk.com/t5/fusion-360-design-validate/how-can-i-make-an-internal-rms-royal-microscopy-society-0-8-quot/m-p/8888486/highlight/false#M192844)

So parsing the xml file, the original had a ThreadType with angle 60 for all the types. Breaking out RMS into its own file and setting the angle to 55 made it work. Trying two ThreadType sections in the same xml actually makes the hole tool suddenly not do anything. Didn't see any error messages. But breaking it into two xml's worked.

Thanks.

Re: Threads

HughesTooling — Mon, 02 Aug 2021 16:51:50 GMT

Are you getting the correct Whitworth form with filleted major\minor diameters?

Mark

Re: Threads

HughesTooling — Mon, 02 Aug 2021 16:57:16 GMT

@tebawg wrote:

Yes, that article link is given in the linked article referenced in the original post. But it looks like the forum mangled the link. So I'll try again: (https://forums.autodesk.com/t5/fusion-360-design-validate/how-can-i-make-an-internal-rms-royal-microscopy-society-0-8-quot/m-p/8888486/highlight/false#M192844)

So parsing the xml file, the original had a ThreadType with angle 60 for all the types. Breaking out RMS into its own file and setting the angle to 55 made it work. Trying two ThreadType sections in the same xml actually makes the hole tool suddenly not do anything. Didn't see any error messages. But breaking it into two xml's worked.

Thanks.

Yes you should only have one set of thread info at the top of the XML file. Something like this for BA threads.

PS please don't attach picture, you can just paste them inline from the clipboard.

Re: Threads

tebawg — Mon, 02 Aug 2021 16:59:54 GMT

"PS please don't attach picture, you can just paste them inline from the clipboard."

I did the drag drop of a file like the web page said to do.

Re: Threads

HughesTooling — Mon, 02 Aug 2021 17:08:43 GMT

Do you mean here for drag and drop?

You don't want pictures as attachments as it makes it hard to read the message and view the picture. There's also an option to insert pictures in the editor as well.

Thanks Mark

Re: Threads

CGBenner — Thu, 05 Aug 2021 13:01:29 GMT

@tebawg @HughesTooling

Hey guys, has this thread issue been resolved? Do we need to tag in someone on the Fusion team to take a look?

Re: Threads

HughesTooling — Thu, 05 Aug 2021 14:20:43 GMT

@CGBenner This is still a problem. I tagged @Phil.E in on another thread on this THREAD here but not sure if it's been logged.

Also looks like I made a post a while ago about this problem and it shows how the inbuilt threads are correct but if you copy the inbuilt XML file and rename, the form of the thread is incorrect.

Thanks Mark

Re: Threads

Phil.E — Thu, 05 Aug 2021 16:24:59 GMT

@HughesTooling I logged this as FUS-88310 but to be honest I don't understand the problem.

Is the problem that Fusion doesn't provide these threads by default? Or that you cannot hack the xml to produce the correct result? What would be the best root-cause solution here?

Re: Threads

HughesTooling — Thu, 05 Aug 2021 17:28:43 GMT

@Phil.E I replied in the other thread but the problem is, one Fusion doesn't come with these threads built in and two the custom XML files no longer produce the correct Whitworth thread form with fillets.

Mark

Re: Threads

Phil.E — Thu, 05 Aug 2021 17:54:02 GMT

Thanks Mark. I've added that to the ticket. The solution from a development perspective would be to include this thread form in Fusion. Sounds like that should be possible, but I have no idea why it's not already there.