Another plasma component...

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7 years 11 months ago #120782 by tommylight
Replied by tommylight on topic Another plasma component...
Another reason for loosing an arc during cut is thermal shutdown of the plasma cutter ( transformer ) during long cuts.
After a mandatory cooling period, with the help of reverse run ( or just backing up a line or two in the gcode ) and the cutting can be resumed.
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7 years 11 months ago #120795 by phillc54
Replied by phillc54 on topic Another plasma component...
My alternative approach...

rodw wrote:
There are a few reasons I think like this

1. That is consistent with the LinuxCNC component approach. Many standard components are < 10 lines of code.

The idea here is to keep as much as possible in one place as long as the thread time is not exceeded.
[hr]

2. I was always taught that if you could not see a procedure on a single screen or page, it is too long and it needs to be broken up.

Although technically this is one procedure, in reality it is many different procedures, each of which (mostly) follows the above criteria. They are then joined together in a reasonably easy to follow sequence in one place. I could (should) have split the 'CUTTING' procedure into the two differing types.
[hr]

3. I was adding pieces of the puzzle on a progressive basis.

That is how I originally built this component, one procedure at a time. First probing then going to pierce height and so on. Get a procedure working then go on to the next one.
[hr]

4. Many of the pieces are totally unrelated. Eg corner lock/velocity anti-dive and torch sampling have nothing in common.

If these are separate components then one has to know how to connect them together and in the correct order which I think complicates the setup for a new user.
[hr]

5. A small component is much easier to debug where we don't have access to a debugger to step through code in an interrupt service routine environment.

The original debugging was easy as only one procedure at a time was added. However that may prove be different when (if) I actually get to try it to my table.
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7 years 11 months ago #120820 by phillc54
Replied by phillc54 on topic Another plasma component...

billykid wrote:
the main problem for the pierce is the material that boils and inexorably ruins the nozzle. generally it is improved by starting first at very low speed so that the melted material is left behind by saving the nozzle.
thanks for the job

That would probably be able to be incorporated although I thought that puddle jump was used to get around this problem.

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7 years 11 months ago #120821 by rodw
Replied by rodw on topic Another plasma component...
I have not looked at the code generated but Sheetcam supports both ramp in and wiggle pierce. Ramp In moves slowly during the pierce along the lead in so the slag shoots out the back. Wiggle pierce wiggles the torch during pierce. I think Ramp In is used on heavy material.

The more you look, the more you find with Plasma! It really is a very unique CNC operation.
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7 years 11 months ago - 7 years 11 months ago #120823 by phillc54
Replied by phillc54 on topic Another plasma component...

rodw wrote:
The more you look, the more you find with Plasma! It really is a very unique CNC operation.

+1
Last edit: 7 years 11 months ago by phillc54.
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7 years 11 months ago #120830 by billykid
Replied by billykid on topic Another plasma component...
this is already an excellent job and I do not want to be problems, but an adjustable ramp as desired for the start would be good for everyone, even for those who have software without this function.
those who do not use it leave it to zero.
then I'll try on the real plasma with 7i80, thcad10 and I have to order only 7i37ta for io ...
regards
Mauro

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