Assembly 4 workbench

Discussion about the development of the Assembly workbench.
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Zolko
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Re: Assembly 4 workbench

Post by Zolko »

FreeCutter wrote: Sun Jul 03, 2022 10:50 am I just tested by opening my assemblies being put together with ASM4 versions older than V0.12 (test file enclosed)
And there are a couple of issues:
...
Is the issue due to my "old" files or could you please adjust the workbench?
thank-you for testing. You did do some weird things there, but I made a new v0.12.2 release that should fix them. Could you please update and check ?
try the Assembly4 workbench for FreCAD v0.19
install with Tools > Addon Manager > Assembly4 — tutorials here and here
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Kunda1
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Re: Assembly 4 workbench

Post by Kunda1 »

Thanks for the update Zolko :)
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FreeCutter
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Re: Assembly 4 workbench

Post by FreeCutter »

Zolko wrote: Mon Jul 04, 2022 7:46 am
FreeCutter wrote: Sun Jul 03, 2022 10:50 am I just tested by opening my assemblies being put together with ASM4 versions older than V0.12 (test file enclosed)
And there are a couple of issues:
...
Is the issue due to my "old" files or could you please adjust the workbench?
thank-you for testing. You did do some weird things there, but I made a new v0.12.2 release that should fix them. Could you please update and check ?
Yes! Thanks a lot, just working fine again!

But: what are the weird things your are meaning? Is it about the subject as such or the way I'm using ASM4?
For the latter, I would of course be interested in your tips as "better practice"!!! :D
Please do not withhold your opinion!

Cheers!
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Zolko
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Re: Assembly 4 workbench

Post by Zolko »

FreeCutter wrote: Tue Jul 05, 2022 4:54 am But: what are the weird things your are meaning?
in your file, you have the "Steering_asm" with name "Assembly" and of Type Assembly, and you also have a Part "SB_1a" with name "Model" of Type Assembly4Model. I don't know how you managed to have both of them in the same file.

So now, Asm4 looks first for a Std_Part called Model of type Assembly (which is the current implementation), if it doesn't find it then it looks for a Std_Part called Assembly of type Assembly (which was the previous case), and latest it looks for a Std_Part called Model, which was the very first Asm4 container. I hope this covers all cases.
try the Assembly4 workbench for FreCAD v0.19
install with Tools > Addon Manager > Assembly4 — tutorials here and here
FreeCutter
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Re: Assembly 4 workbench

Post by FreeCutter »

Zolko wrote: Tue Jul 05, 2022 9:45 am
FreeCutter wrote: Tue Jul 05, 2022 4:54 am But: what are the weird things your are meaning?
in your file, you have the "Steering_asm" with name "Assembly" and of Type Assembly, and you also have a Part "SB_1a" with name "Model" of Type Assembly4Model. I don't know how you managed to have both of them in the same file.
Uuups (!) ... I have never noticed that before and it happened without any intention. Thanks for checking and your explanations!
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Vincent B
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Re: Assembly 4 workbench

Post by Vincent B »

I'm trying to make an animation of a gimbals.
Attaching the kernel on a cylinder works well but it's need 2 axis to move properly.
Is it possible to attach it on two axis with assembly4?
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Zolko
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Re: Assembly 4 workbench

Post by Zolko »

Vincent B wrote: Mon Jul 18, 2022 7:07 pm Is it possible to attach it on two axis with assembly4?
yes, but you need to build it properly :

Cardan_Asm4.png
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try the Assembly4 workbench for FreCAD v0.19
install with Tools > Addon Manager > Assembly4 — tutorials here and here
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Vincent B
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Re: Assembly 4 workbench

Post by Vincent B »

Thanks a lot, after many hours, I eventually finished this joint. I made it with 2 deflection angles.
As this joint joint is not homokinetic, the output shaft have a slightly speed variation with the input.
Could be interesting to draw curves on a chart.
https://en.wikipedia.org/wiki/Universal_joint
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