CNC Plasma Table Build

Magnetic torch mounts sound cool - make sure they have a pin or cone or something to hold them from slipping sideways. Magnets generate a lot of force but typically will not re-align that consistently and have much less force side to side than in/out.

 

Speaking of mounts, I'd love to find someone that does milling so I can get one made for my setup

Locating pins to allow for angling of the torch for beveled cuts -

 

I could see that having some limited use. a rotatable mount that has an "index" wheel of sorts on the side with common angles drilled for the pins

 

So that's a magnetic break-away, with positioning for 0, 15 degree, 30 degree (common), and 45 degree (also common).

We used 30 degree bevels in thicker material that would consist of multiple passes; would just need to manually hit the edge for a small landing with an angle grinder (literally a few seconds). After that, ready for your root weld.

Think Bug-O and oxyfuel.

 

Would these parts be shippable? I have access to bridgeports and lathes.

 

Absolutely, the whole mount wouldn't be more than maybe 4" tall, 4" wide, and some 3-4" deep (give or take an inch in each direction).

It would consist of two parts; the back piece that attaches to the Z-axis part of the motor, and the frontal torch mount.

Although someone already offers it for an affordable price of $400-600 each.

I'm just being a cheap ass as I wouldn't use the bevel option often, but the break-away portion itself can be a benefit.

 

If you guys can work up a rough design I’ll also help out. Me and my little 3 axis cnc. Post some cad! Fusion is my flavor of choice. I’ll have a Langmuir eventually so this is a little self serving.

 

I can get started sometime in the next few days.

Working on an Airforce sign, battery bracket, and a few more things at the moment.

 

No rush on my end! Lol

 

@Zebinator if you want to take care of this I have no issue with that. If you run into trouble I can help

 

Looks like i.am getting a refrigerated air dryer.

Was looking around on ebay an found a coolair cool25. That I ended up with the winning.bid of.$30.00. Cheap enough that I felt the risk was worth it.

https://www.northerntool.com/products/coolair-refrigerated-dryer-25-cfm-115-volt-model-cool25-51727

 

Nice!

Been meaning to get that HF one, don't really need it but one of these days.

 

The regulator has been replaced, pretty simple job over all, the airlines use a DOT style push to connect fitting, 3 air lines, one from the Air Supply, one for the Air gauge, and one for the solenoid for the torch air. In case anyone is curious or has a need in the future this is the model and part number of the old regulator




along with a couple random pictures of the inside, because I know I can't be the only who took apart there toys growing up to see what was inside.

 

Never asked, did you go raw voltage or divided?

Not seeing any aftermarket wires.

 

Does your table have a stop programmed in if the float switch is triggered while the torch is moving? That is all I have ever needed.

 

Running into an issue where the Test part is not cutting properly. the Fusion360 simulation shows the inner circle cutting, along with the Mach4 tool path display. The machine traces the outline of the inner circle but fails to fire the torch. the outer profile cuts with no issue.

https://youtu.be/eiI27aQekOY?si=wqoiaJ3e_Y7dtjZp




Specs:

$699 Primeweld Cut60 60Amp Non-Touch Pilot Arc PT60 Torch Plasma Cutter 110V/220V Dual Voltage 3 Year Warranty

Primeweld Cut60
16g Mild steel
30 Amps
110 IPM
55 PSI
Mach4 with ESS control Board

The G-code:

N10 G90
N20 G70
(Circle)
N30 G0 Z0.6161
N40 G0 X0.2562 Y-0.168
N50 G0 Z0.0161
M62P5 (+++ P=Output5, Turn Torch ON +++)
N60 G4 P0.5
N70 G1 Z0. F50.
N80 G1 X0.4267 Y-0.0696
N90 G3 X0.4742 Y0.0127 I-0.0475 J0.0823
N100 G3 X-0.4708 I-0.4725 J0. F110.
N110 G3 X0.4742 I0.4725 J0.
N120 G3 X0.4267 Y0.095 I-0.095 J0.
N130 G1 X0.2562 Y0.1934
M63P5 (--- P=Output5, Turn Torch OFF ---)
N140 G0 Z0.6161
(Outer Profile)
N150 G0 Z0.6161
N160 G0 X1.3193 Y1.2455
N170 G0 Z0.0161
M62P5 (+++ P=Output5, Turn Torch ON +++)
N180 G4 P0.5
N190 G1 Z0. F50.
N200 G1 X1.4177 Y1.075
N210 G3 X1.5 Y1.0275 I0.0823 J0.0475
N220 G2 X1.5275 Y1. I0. J-0.0275 F110.
N230 G1 Y-0.5
N240 G2 X1. Y-1.0275 I-0.5275 J0.
N250 G1 X-1.5
N260 G2 X-1.5275 Y-1. I0. J0.0275
N270 G1 Y1.
N280 G2 X-1.5 Y1.0275 I0.0275 J0.
N290 G1 X1.5
N300 G3 X1.5823 Y1.075 I0. J0.095
N310 G1 X1.6807 Y1.2455
M63P5 (--- P=Output5, Turn Torch OFF ---)
N320 G0 Z0.6161
N330 M30

 

I'm putting together another computer atm but if you want shoot me the file over and I'll test run it

 

G-code or DXF?

 

The g code, it's an nc file or tap file and either will work

Let me get you my email address

 

(Circle)
N30 G0 Z0.6161
N40 G0 X0.2562 Y-0.168
N50 G0 Z0.0161
M62P5 (+++ P=Output5, Turn Torch ON +++)
N60 G4 P0.5
<snip?
M63P5 (--- P=Output5, Turn Torch OFF ---)
N140 G0 Z0.6161
(Outer Profile)
N150 G0 Z0.6161
N160 G0 X1.3193 Y1.2455
N170 G0 Z0.0161
M62P5 (+++ P=Output5, Turn Torch ON +++)
N180 G4 P0.5
<snip>
M63P5 (--- P=Output5, Turn Torch OFF ---)
N320 G0 Z0.6161
N330 M30
Figured out the problem, with some help from CNC plasma table builders Facebook group. it was originally suggested that I change M6P5 to M64P5 and that change to cutting the inner circle first and not the outer profile. so I tried using the original M62P5 for the second cut. still same as before, but it did lead me to an interesting little bit information on the warp9 webpage ( the makers of my control board).

"To make sure the M10/M11 or M62/M63 works as desired, it is best to follow these guidelines:

• The M10Px, M11PX, M62PX or M63PX command should be by itself on the line immediately before the subsequent G0, G1, G2 or G3 command. Don't mix other commands in between!"

well, I was curious about how to add a pierce delay if I need an axis movement right after firing the torch so Aa search on M62X with pierce delay led me to another page for the warp9 THC board.

Pierce Delay
Typically, most plasma users just use a G04 P# after firing the torch, to get a pierce delay. The provided SheetCam post processor would generate output which would look something like this:

...

N2170 M62P3 (>>>Torch ON<<<)

N2180 Z0.1500 (Force a small move in Z to make M62 fire the torch)

N2190 G04 P0.4 (DELAY)

N2200 G01 Z0.0600 F20.0 (Drop to cut height)

(Move X and Y here to make the cut)


After making the change in the G-code I was able to make 3 cuts that turn out as they should, minus the tuning that is needed to cut a the circle clean, it is a bit "off"