End to end examples in CAD

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askoh
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Re: End to end examples in CAD

Post by askoh »

Zolko wrote: Tue May 09, 2023 3:41 pm @ppemawm has a very good example running right now: Atkinson Differential Engine. And he's guiding user @Bernard19 through the design
Excellent. Close to what I have in mind. Will it be put in a prominent and stable location when it is completed?
user1234
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Re: End to end examples in CAD

Post by user1234 »

Somehow your suggestions with end-to-end and then LOD gives no sense at all. And even the best CAD in the world need LOD and lightweight loading system, because else it is not compute-able and represent-able via GUI and/or RAM, besides the whole fiddling around with really unnecessary details.

Do not forget, that if are the unnecessary are in the CAD, they gives also an unnecessary big rat-tail in all kind data and handling work afterwards, like PDM/PLM handling (excluding handling, exceptions, ....), BoM (same), ERP (if they land accidentally there by former handling (PDM/PLM/BoM errors, unnecessary!) you have to rework all in the ERP), same in production order, purchase requisition, ..... all because unnecessary details are in the model and there is a change to mess things in the workflow line, the rat-tail afterwards is very big. Unnecessary details does not legitimate to be in the CAD model.

Greetings
user1234


edit: typo
kisg
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Re: End to end examples in CAD

Post by kisg »

Hi @askoh,

We would like to have something similar to what you proposed. We are building machines that are constructed for specific use cases and only a few are built from each configuration (e.g. 20-30). At the same time, we need to keep the costs down and build systems that are built from mainly off-the-shelf components and are easy to assemble.

My plan is to use FreeCAD to help with this by creating a CAD model that also includes everything for manufacturing, including BOM (with information on where to source each component including pricing information) and step-by-step building instructions.

The good news is, that we are not the only ones interested in this: apparently, there was a presentation at the FreeCAD Day in February about automated documentation for open-source hardware from a properly annotated FreeCAD model. Check out the code here: https://codeberg.org/osh-autodoc/osh-autodoc-workbench (They have live ISO for testing + a video for an overview). I could not find a recording of the FreeCAD Day presentation, but the author @pieterhijma is on the forum, and he posted about the project here: viewtopic.php?p=657583#p657583

It was built as part of an EU-funded project: https://www.interfacerproject.eu/news/osh-ecosystem/
askoh
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Re: End to end examples in CAD

Post by askoh »

kisg wrote: Mon May 22, 2023 7:00 pm The good news is, that we are not the only ones interested in this: apparently, ...
Great to know. I will follow the work you described. Technology gives us incredible power to create and control more and more. So exciting.
Thanks.
Aik-Siong Koh
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