Anything welding

Tell me more

 

Seems they already did, the new ones are a differnt size.. when the time comes. I will find some other use for it

Until then it serves a purpose.

 

Well instead of lining it, which then you have to replace the entire elbow when it wears through. You can back it with wear plate and when it wears through the elbow all the cavities fill with media protecting specifically around the flanges. And then simply replace the wear back plate when needed.

 

My CNC table issue is so perplexing, the most seasoned users on the forum can't figure it out and even Langmuir chimed in to say that they have to brainstorm with their team tomorrow first thing in the morning.

 

What are your problems?

 

In the shortest possible explanation - my cut height is stuck at a height of .02" irrelevant to what the G code is.

This leads me to believe 1 of 2 things -

A fault in the hardware, causing an interruption of the initial height sense and/or torch height control operation or

A mechanical issue, which to the largest extent, has been proven to not be the case especially since it is an exact .02", consistently

 

Do you have AVC on that table?

 

Not sure what that is; I won't even use the acronyms used for my cnc table as many are the "same" across other manufacturers but call it their own name.

 

look at Profax Guns to fit your Machine .

Profax guns and consumables is what we used for all our Miller rental machines.

I have been out of that for about 3 years though.

 

It's Arc Voltage Control, it controls cut height via voltage sensing through the flame. ie can adjust the cut height evenly lets say on a warped sheet throughout the cut

 

Yeah, voltage input module for us.

It reads correctly. That's one of the basic troubleshooting steps I'm 20 steps ahead of already.

Voltage isn't the issue as, get this, a file with no activation points (meaning, won't fire, but cycles z axis as needed with proper springback and cut height) still results in a .02" cut height.

It's used as a test file commonly on the forum.

The Z axis has been dismounted, thoroughly checked, no binding, contact switches checked (in place and fully clean). Everything from a physical standpoint is as it needs to be.

 

@RedManRocket

I'm all ears but if this helps, I have posted many videos and pictures in another thread displaying results of my thorough troubleshooting because I believe they convey more than words in a post can.

Here's the thread for you or anyone to read through; I'm the orange figure (Kwikfab)

https://forum.langmuirsystems.com/t/thc-voltage-no-height-changes/32515

You'll see the many pictures, videos, and responses I've provided displaying the results of even more troubleshooting as well as many screenshots.

 

Only reason I was asking is I was going to suggest if possible to turn your "AVC" we'll call it, off during a cut and manually adjust your height up and then turn your "AVC" back on (Also during the same cut) to see if it will "break" the possible glitch you're having and return to it's cut height.

 

Oh we did that; you can disable THC on Firecontrol and I did run programming that way.

This means only initial height sensing brings down the torch to the work piece, then springs up to the correct cut height, and THC does nothing at all throughout the cut.

Result? The same .02"

Reason? Initial height sensing, as mentioned, sets a cut height of .02" even though programming says otherwise.

We even had other members provide their own files to remove CAM as being the possible factor on my end; no changes.

 

And you can't manually adjust the height during a cut? To kind of try to get the brain thinking again for the height control to attempt to correct it? And what types of grounds do you have for your table? Occasionally we'll have to ground directly to the workpiece to avoid a similar problem on thinner material.

 

And let me pick your brain a little more. Even at this .02 cut height the voltage is reading at the specific processes required voltage? Because any change in physical height that isn't within the process should put the voltage out of whack which is directly related to the electrode being to close or too far away from the material. If your voltage is still reading correctly at the wrong cut height there must be a problem in the connection whether it's a ground or some connection within the torch body.

 

So that's just it, table runs fine in every other sense of the word.

Hell, check out these cuts on a test file first with .06" programmed





And .1" programmed





The results are identical







The above is all from yesterday. I measured live voltage while being cut with THC off; no different with it on.

You can adjust cut height to the work piece, then run a program with completely eliminating the THC module manually (this disables both initial height sensing and torch height control).

But we're troubleshooting to find out why initial height sensing isn't putting is at our proper cut height. So yes, I did tons of thorough testing all relating to voltages both smart (auto) as well as manually entered all with the same results.









It's not a voltage thing.

It's an initial height thing before actual cutting occurs to begin with -

 

Voltage is irrelevant on a file where no torch activation occurs.

I'll provide the G code here -



That's what led to the theory -

Mechanical (as in a physical or mechanical fault, binding, stuck, etc)

Or hardware issue where a specific resistor or something burned out in the control box maybe which impedes a specific signal

Just my theory that's all

 

But to more answer your question, yes I do know physical height in relation to the electrode and work piece will state a specific voltage.

My voltage should be closer to 120 or so.

On my initial pierce, during pierce delay, video displays a live voltage feed of 120ish. This works in the same way as Lincolns Torchmate tables that it reads that voltage from initial pierce for setting height.

If I use the smart voltage function, or use the manual voltage function, regardless...after the initial pierce, it remains at a consistent lower voltage that correlates with the incorrect cut height of .02"

 

It's amazing that it still wants to cut without ramming into the plate or turning off the torch when the voltage should "technically" be way off with the height being off.