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Using Spotting with Sheetcam

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22 Jul 2020 10:56 #175384 by rodw
Replied by rodw on topic Using Spotting with Sheetcam

Have you set the threshold volts and delay time in the config panel.

I found on my machine anything < 220 ms would not fire the torch. I thought when there were a few trying to get this going that mine was one of the quickest so I would start well above that..

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22 Jul 2020 11:27 #175386 by Clive S
Replied by Clive S on topic Using Spotting with Sheetcam

Have you set the threshold volts and delay time in the config panel.



Yes I have tried various settings. I have attached a slightly modified test prog

link to vid and pic. photos.app.goo.gl/VBYt32bv5eShEe6E6

It will do the first pierce but not the other 3. I noticed the arc goes up to 250V on the last three.

Also the code use tool 2 and it picks that from the tools from PlasmaC

It does the same for both files.

File Attachment:

File Name: test_1.txt
File Size:2 KB

File Attachment:

File Name: Test_2.txt
File Size:2 KB
Attachments:

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22 Jul 2020 11:35 - 22 Jul 2020 11:49 #175387 by phillc54
Replied by phillc54 on topic Using Spotting with Sheetcam
The $2 is spindle #2, not tool #2. That is the correct spindle for spotting

It may be that your machine needs a bit of recovery time between torch on signals. Try putting a dwell (G4L between the spots.

Edit: (G4) not G4L, stupid phone...
Last edit: 22 Jul 2020 11:49 by phillc54.

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22 Jul 2020 11:53 #175388 by rodw
Replied by rodw on topic Using Spotting with Sheetcam

I noticed the arc goes up to 250V on the last three.


Thats not unexpected when the torch turns on and off. Doing it so close together, might make it go higher... It won't hurt anything with a THCAD involved.

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22 Jul 2020 12:22 - 22 Jul 2020 12:24 #175390 by Clive S
Replied by Clive S on topic Using Spotting with Sheetcam

The $2 is spindle #2, not tool #2. That is the correct spindle for spotting

It may be that your machine needs a bit of recovery time between torch on signals. Try putting a dwell (G4L between the spots.

Edit: (G4) not G4L, stupid phone...


Ok I have tried a dwell of 4 secs. It is still the same. Then I tried a bolt hole 5Number 40mm dia from the extras. That worked perfectly But then that is using a different tool.
Last edit: 22 Jul 2020 12:24 by Clive S.

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22 Jul 2020 12:26 #175391 by phillc54
Replied by phillc54 on topic Using Spotting with Sheetcam
Do you mean that you spotted with the bolt circle or did a cut?

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22 Jul 2020 12:32 #175392 by Clive S
Replied by Clive S on topic Using Spotting with Sheetcam

Do you mean that you spotted with the bolt circle or did a cut?


Sorry I should have said the bolt hole cut 5 5mm holes not spotted

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22 Jul 2020 13:05 #175395 by phillc54
Replied by phillc54 on topic Using Spotting with Sheetcam
I seem to recall similar voltage issues when you were setting your machine up which required using a relay for arc ok. Maybe you machine is not suitable for the way we have spotting set up.

It may be possible to change spotting a bit by adding a value of -1 to the threshold which would mean start the delay when arc ok is established. If you are interested in this let me know and I will have a look tomorrow. This may be a bit heavy handed for spotting but then again it may suit your machine.
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22 Jul 2020 14:53 #175398 by Clive S
Replied by Clive S on topic Using Spotting with Sheetcam

I seem to recall similar voltage issues when you were setting your machine up which required using a relay for arc ok. Maybe you machine is not suitable for the way we have spotting set up.

It may be possible to change spotting a bit by adding a value of -1 to the threshold which would mean start the delay when arc ok is established. If you are interested in this let me know and I will have a look tomorrow. This may be a bit heavy handed for spotting but then again it may suit your machine.


Phill I have managed to do what I wanted ie make a back plate to hold a 7i76e all done on the plasma drilling all the holes and cutting it out in one go :) All I had to do was stick a 3mm drill through each plasma hole

I changed M3 $2 S1 (cut start) to M3 $0 S1 (cut start) through the file

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The following user(s) said Thank You: phillc54, tommylight

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22 Jul 2020 15:20 #175402 by tommylight
Replied by tommylight on topic Using Spotting with Sheetcam
Nice.

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