New Plasmacutter

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24 Jul 2021 12:50 #215771 by Giuseppe
Replied by Giuseppe on topic New Plasmacutter
today i got a new problem. at the moment my plasma cutter does a probing with every new cut.
the consequence of this is that when the torch comes to a point where it has already been cut and makes the next cut the torch travels underneath the material during probing because it does not encounter any resistance. because there is no material at this point :-(
how do you solve the problem?

 

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24 Jul 2021 13:21 #215773 by snowgoer540
Replied by snowgoer540 on topic New Plasmacutter
I think what you’re looking to do is skip the probe if the last probe was within a certain distance of the first probe.  

If so, I think this will help you:

linuxcnc.org/docs/devel/html/plasma/qtplasmac.html#qt_ihs-skip

IHS skip distance is set on the parameters tab in the probing section.  

Hope that helps
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24 Jul 2021 14:01 #215781 by tommylight
Replied by tommylight on topic New Plasmacutter
If i understand correctly, that is a CAM issue, torch should never probe where there is no material.
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24 Jul 2021 14:06 #215783 by snowgoer540
Replied by snowgoer540 on topic New Plasmacutter

If i understand correctly, that is a CAM issue, torch should never probe where there is no material.


Reading it again, I’d have to agree with you Tommy. No idea what I was picturing the first time :laugh:

On vacation… maybe I should stick to that haha
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24 Jul 2021 14:32 - 24 Jul 2021 14:33 #215785 by Giuseppe
Replied by Giuseppe on topic New Plasmacutter
I think you are not totally wrong snowgoer540

@tommylight

The problem is not in the code, there is material. but it press down by the wight of the torch.

so i think i have to use the ihs parameter to disable the probe



 
Last edit: 24 Jul 2021 14:33 by Giuseppe.
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24 Jul 2021 18:06 #215801 by tommylight
Replied by tommylight on topic New Plasmacutter
Or use a spring ?

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24 Jul 2021 18:42 #215802 by Giuseppe
Replied by Giuseppe on topic New Plasmacutter
I think i will realise a ohmic probe later. but for the moment. How can i make it that plasmac makes only one probe at start and no more
during the job?

Should i use ihs skip? 

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24 Jul 2021 23:48 #215821 by phillc54
Replied by phillc54 on topic New Plasmacutter
If your material gets pessed down by the torch then it means it must be bending up during cutting so IHS Skip wont help you for that situation. You need stable material to rely on IHS Skip.

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25 Jul 2021 08:29 #215843 by Giuseppe
Replied by Giuseppe on topic New Plasmacutter
Ok, last question for this problem, how can i say the machine to only one time on start a probing?
And not on every cut in the job.

 

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