"Origami" CNC Plasma Build - folding 1200 x 600mm cut area

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25 Jul 2021 00:22 #215826 by rodw
Looks good but from my experience I would swap the striker plate position with the switch position. I had no end of issues with reliable wiring when the switch was allowed to move...

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25 Jul 2021 01:17 #215830 by Joco
Rod - hmmm might need some more explanation.  Unless I am missing it I'm sure the Z limit switch is non moving and for the floating switch it has to move.

I did deliberately swap the rail/truck positioning around.  The truck is now the fixed mounting point and the rail is on the moving part. Essentially a linear rail version of Tommy's linear rod concept.

Cheers - J.

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25 Jul 2021 07:10 #215840 by rodw

Rod - hmmm might need some more explanation.  Unless I am missing it I'm sure the Z limit switch is non moving and for the floating switch it has to move.

I did deliberately swap the rail/truck positioning around.  The truck is now the fixed mounting point and the rail is on the moving part. Essentially a linear rail version of Tommy's linear rod concept.

Cheers - J.

Sounds like I was the one missing something!

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26 Jul 2021 08:55 #215937 by Joco
Initial concept for torch breakaway.  I'm still working on dimensions and need to check what magnet sizes I can source which will influence the ball bearing sizes etc etc.

This isn't a new design and its concept is based on a design SeanP over on Spider Plasma created.

Anyway, thought I would post what I had at this point.

Attachments:

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26 Jul 2021 10:08 #215942 by rodw

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26 Jul 2021 10:34 #215948 by tommylight

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30 Jul 2021 00:40 #216288 by Joco
Been working on the torch holder and a way to index it vertical, 30deg and 45deg.  The off verticals are to allow a 60deg or 90deg incl angle bevel to cut for welding purposes.

Here are some design screen shots:



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The following user(s) said Thank You: rodw

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30 Jul 2021 03:13 - 30 Jul 2021 03:13 #216295 by Joco
I think I might have a had a brain wave or brain fart. Will work on an idea and post it but I "think" I can simplify this and get easier reposioning for bevel cust.
Last edit: 30 Jul 2021 03:13 by Joco.

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30 Jul 2021 12:43 #216345 by BigJohnT
The limit switch looks bullet proof now.

Looking good!

JT

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30 Jul 2021 14:43 #216351 by rodw
I wonder how useful the fillet feature would be? Lets say you were cutting an end cap to weld onto a tube or square section.
How many setups would you have and how would you manage them?

If its not an end cap, there are plenty of ways to design a part to be welded without a fillet once you have a CNC plasma cutter at your disposal. eg. tab and slot construction. You can even cut the tabs shorter than the material thickness and weld from the back for a nice clean finish with no visible welds. 

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