topic Re: Metric Trapezoidal Threads Form wrong in Fusion Support Forum

Metric Trapezoidal Threads Form wrong

HughesTooling — Thu, 25 Apr 2019 21:46:53 GMT

April's what's new said Metric Trapezoidal Threads had been fixed but the form is totally wrong! You might have fixed the angle but the profile is obviously wrong.

Here's an example, pretty obvious the threads on the right are wrong, the thread on the left is an imperial acme thread that looks right, probably isn't though, see links below.

There was another post here about the form of ordinary threads having the wrong pitch diameter as well. With these errors you really need to get an engineer who understands threads to check and fix what Fusion is producing. From my tests all metric normal threads, internal and external are wrong, haven't checked the imperial ones but if there are calculated the same way they will be wrong as well.

Some of us need to create drawings to enable measuring threads using wires and Fusion's modeled threads should make this easy but as the forms wrong it's back to manually drawing again. I first reported this problem back at the beginning of 2017 in this thread, also see this thread for more details.

Mark

Re: Metric Trapezoidal Threads Form wrong

James.Youmatz — Mon, 29 Apr 2019 11:28:59 GMT

Hi @HughesTooling ,

Thanks for reporting this, and being diligent on this topic. There is no excuse - these should be correct. I'm escalating this directly with our product management and development team, to see what might be going on.

Thanks,

Re: Metric Trapezoidal Threads Form wrong

Anonymous — Tue, 30 Jul 2019 19:11:07 GMT

Hi,

We are the 30 july, can you tell us about the progress of the patch development ?

Thank you.

Re: Metric Trapezoidal Threads Form wrong

James.Youmatz — Wed, 31 Jul 2019 12:39:21 GMT

Hi @Anonymous ,

I want to say this fix already went live. Are you seeing the old results? Can you confirm you are on the latest version of Fusion.

Thanks,

Re: Metric Trapezoidal Threads Form wrong

HughesTooling — Wed, 31 Jul 2019 13:53:37 GMT

@James.Youmatz Quick test and still wrong. Below I've created an acme thread for comparison and it obvious the metric trapezoidal thread is incorrect. I'm using version 6045

Mark

Re: Metric Trapezoidal Threads Form wrong

James.Youmatz — Wed, 31 Jul 2019 13:58:23 GMT

Hi @HughesTooling ,

Thanks for testing. I asked the team for an update (as I may have just read the ticket wrong). Let me see what they say.

Thanks,

Re: Metric Trapezoidal Threads Form wrong

James.Youmatz — Wed, 31 Jul 2019 15:26:33 GMT

Hi guys,

Ah, it was my mistake! This will come out in our next update. Sorry for the wrong information.

Thanks,

Re: Metric Trapezoidal Threads Form wrong

Anonymous — Wed, 31 Jul 2019 20:02:36 GMT

Hi @James.Youmatz,

We better understand, I'm also going with the 6045 and with the same issue as @HughesTooling. Next time i'll give more informations !

Thanks for your reactivity guys.