Feature Request: Threads

Discussions about the development of the TechDraw workbench
reox
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Feature Request: Threads

Postby reox » Sat Mar 10, 2018 12:35 pm

I think this is closely related to the development of the PDN feauture "holes" but also to other feature which are currently not developed, like outer threads on cylinders.
It would be really nice, if you could draw threads, like outer and inner threads. For holes, this might already be possible, as the information is stored with the feature. As the core drill hole is modeled, you would just need to draw over it the thread, like a 3/4 circle for the top view and the thread plus the end of the thread for the side view.

Here are a few things when modeling threads. There is a norm for that: DIN ISO 6410-1. The German wikipedia has some information about that: https://de.wikipedia.org/wiki/Gewinde#Darstellung
I annotated that as a reference:
threads.png
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NormandC
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Re: Feature Request: Threads

Postby NormandC » Sat Mar 10, 2018 5:43 pm

May I suggest you create a feature request on the bug tracker, and link to this topic.

reox wrote:
Sat Mar 10, 2018 12:35 pm
There is a norm for that: DIN ISO 6410-1.
It's not the only one, and more would have to be added like ANSI.
reox
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Re: Feature Request: Threads

Postby reox » Sat Mar 10, 2018 8:26 pm

okay, would be nice to have the information about them too.

I just created a ticket: https://www.freecadweb.org/tracker/view.php?id=3369
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NormandC
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Re: Feature Request: Threads

Postby NormandC » Sat Mar 10, 2018 8:31 pm

Great, thanks. Can't hunt for more info on other norms at the moment, hope to do it at some point.
maker
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Re: Feature Request: Threads

Postby maker » Sat Aug 18, 2018 12:00 pm

Hi all,

according to the background that there is no working feature for the presentation of threads, I 've tried to construct a thread on the actual basis of FC 0.17:

Here are my results:
Attachments
construction_01.jpg
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maker
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Re: Feature Request: Threads

Postby maker » Sat Aug 18, 2018 12:04 pm

... unfortunately the performance of FC 0.17 shows the following problems:
Attachments
construction_02.jpg
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maker
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Re: Feature Request: Threads

Postby maker » Sat Aug 18, 2018 12:20 pm

... another approach was following the manufacturing of a thread in a tapped blind hole. In other words:

1. drill core bore
2. cut thread

see my results:
Attachments
construction_04.jpg
construction_04.jpg (35.16 KiB) Viewed 1168 times
construction_03.jpg
construction_03.jpg (39.92 KiB) Viewed 1168 times
maker
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Re: Feature Request: Threads

Postby maker » Sat Aug 18, 2018 12:22 pm

;) ;)
... Any ideas to improve my results ??
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wandererfan
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Re: Feature Request: Threads

Postby wandererfan » Sat Aug 18, 2018 12:53 pm

maker wrote:
Sat Aug 18, 2018 12:22 pm
;) ;)
... Any ideas to improve my results ??
In "Target" have you tried showing smooth, seam or hidden lines?
maker
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Re: Feature Request: Threads

Postby maker » Sun Aug 19, 2018 7:28 am

wandererfan wrote:
Sat Aug 18, 2018 12:53 pm
maker wrote:
Sat Aug 18, 2018 12:22 pm
;) ;)
... Any ideas to improve my results ??
In "Target" have you tried showing smooth, seam or hidden lines?
Yes I did try to change that, but it doesn't work or I 've misunderstood your hint.

Enclosed please find my file for better understanding ...
Attachments
Test.FCStd
(26.67 KiB) Downloaded 29 times