Sheetmetal workbench - unable to unfold round bracket
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Sheetmetal workbench - unable to unfold round bracket
Hi,
I'm trying to use the sheetmetal workbench for the first time and cannot get a simple bracket to unfold. Probably I'm doing something wrong here as I have no experience with this workbench.
Here's the bracket:
And here's how it looks after unfolding:
I highlighted the flat face and hit “unfold”. The radius is not unfolded and as a result the part is not usable. How do I create this bracket so it unfolds as expected? Any hints appreciated.
OS: Debian GNU/Linux 11 (bullseye) (X-Cinnamon/lightdm-xsession)
Word size of FreeCAD: 64-bit
Version: 0.20.25645 (Git) AppImage
Build type: Release
Branch: master
Hash: 37d9757399b4c2ec30318eb88d7cd7c508246345
Python version: 3.9.7
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.2
Locale: English/United Kingdom (en_GB)
I'm trying to use the sheetmetal workbench for the first time and cannot get a simple bracket to unfold. Probably I'm doing something wrong here as I have no experience with this workbench.
Here's the bracket:
And here's how it looks after unfolding:
I highlighted the flat face and hit “unfold”. The radius is not unfolded and as a result the part is not usable. How do I create this bracket so it unfolds as expected? Any hints appreciated.
OS: Debian GNU/Linux 11 (bullseye) (X-Cinnamon/lightdm-xsession)
Word size of FreeCAD: 64-bit
Version: 0.20.25645 (Git) AppImage
Build type: Release
Branch: master
Hash: 37d9757399b4c2ec30318eb88d7cd7c508246345
Python version: 3.9.7
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.2
Locale: English/United Kingdom (en_GB)
- Attachments
-
- bracket.FCStd
- (58.65 KiB) Downloaded 31 times
Re: Sheetmetal workbench - unable to unfold round bracket
Interesting, the distance between the tab in the flatened sketch is correct, but, it doesn't add the lines.
BTW, why do you have the Part (yellow icon) container? It is not needed, just an extra step.
BTW, why do you have the Part (yellow icon) container? It is not needed, just an extra step.
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Re: Sheetmetal workbench - unable to unfold round bracket
The bracket is supposed to comprise several individual parts. But I already failed at creating the first bit.
You're right. For this example the part is superfluous.
- papyblaise
- Veteran
- Posts: 7864
- Joined: Thu Jun 13, 2019 4:28 pm
- Location: France
Re: Sheetmetal workbench - unable to unfold round bracket
I flip the subject all over the place, with or without PartDesign, I can't roll it up if it's greater than 179 °
- Attachments
-
- demi braket.PNG (11.31 KiB) Viewed 1752 times
- papyblaise
- Veteran
- Posts: 7864
- Joined: Thu Jun 13, 2019 4:28 pm
- Location: France
Re: Sheetmetal workbench - unable to unfold round bracket
after a lot of disappointment
- Attachments
-
- bracket.FCStd
- (115.84 KiB) Downloaded 32 times
-
- bracket.PNG (21.71 KiB) Viewed 1622 times
Re: Sheetmetal workbench - unable to unfold round bracket
After tweaking the angles, the part looks correct. Thank you for looking into that. I saw that you completely reconstructed the part in the sheetmetal workbench.
What was wrong with my version? Did I make a mistake or is it a bug? I was under the impression that you can build objects outside the sheetmetal workbench (e.g. using sketcher like I've done). Is that not the case?
What was wrong with my version? Did I make a mistake or is it a bug? I was under the impression that you can build objects outside the sheetmetal workbench (e.g. using sketcher like I've done). Is that not the case?
- papyblaise
- Veteran
- Posts: 7864
- Joined: Thu Jun 13, 2019 4:28 pm
- Location: France
Re: Sheetmetal workbench - unable to unfold round bracket
I do not know the composition of the coding, it seems to me that unfolding beyond 180 ° he does not know which side to go
you didn't make a mistake, and I wouldn't talk about a bug either
you didn't make a mistake, and I wouldn't talk about a bug either
Re: Sheetmetal workbench - unable to unfold round bracket
Your approach is in principle good but not complete
- Make the fillet in the sketch (see image)
- Fill in the properties in the Basebend, Radius=50 and the desired thickness Edit: The fillet in the sketch fails with R=5 and smaller and succeed with R=6 and bigger
- Make the fillet in the sketch (see image)
- Fill in the properties in the Basebend, Radius=50 and the desired thickness Edit: The fillet in the sketch fails with R=5 and smaller and succeed with R=6 and bigger
Re: Sheetmetal workbench - unable to unfold round bracket
Here a video for making such a bracket
Re: Sheetmetal workbench - unable to unfold round bracket
Thanks for the input and the screencast Willem. Much appreciated.