Hello Guest it is April 18, 2024, 03:51:05 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Davek0974

1001
General Mach Discussion / Re: Need Help to Figure out PLASMA CNC
« on: October 15, 2016, 04:24:53 AM »
Ok, is the plasma designed for CNC - if it is RF, scratch or contact start you will be in for a world of pain - been there done that.

The TB6560 does not have too many supporters i think, might be ok though, does it have a relay to control external stuff -  this is what is used to fire the torch.

CNC Plasma is filthy dirty, if cutting stainless it can be poisonous too - ventilation is a must, you can build a water table which cuts just above a tray of water maybe 6" deep and stops a lot of the muck but then you have water in the shop and that leads to rust......

The mechanics is the same roughly as the cNC wood machine, does not need to be built as strongly as there are no cutting forces - its a non-contact process but does need to be rigid to get decent cuts.

You will need a torch height controller or THC - these range from basic to very expensive but is really needed to maintain any quality.

You will need an air compressor and dry air supply big enough to run the plasma.

I  have built two tables and learnt a lot the hard way, in the end i bought a Hypertherm plasma system and have never looked back.

Suggest a look on a forum called PlasmaSpider - the Mach aspect of the system is a really minor point and simple to do, its the rest of it that takes the time and cash ;)

1002
ok thanks

1003
ok thanks, is it just dog-bone or does it do T-bone as well?

1004
Yeah i did see the dogbone add-in but was hoping for one that has full support etc, had bad times with third-part add ons to programs before;)

I guess I should really add them at CAD time, would solve a lot of issues as you lose them if you have to re-import the design after a tweak, can be a pain if needs doing a few times.

Live and learn ;)

1005
Didn't even know that was possible :)

Sounds like a PITA, depends how good it is i guess, one that i would like to see built-in is dog-bone and T-bone joints, Vectric Aspire has these and i use them a lot.

1006
Its the free home use license.

The forum that helped out was the general one, still nothing on the cam one.

All sorted now but these posts are damn complex compared to others ;)

1007
Well, it works!  ;)

I ran the code above on some scrap, used the oldest 6mm tap i had just in case, had straight flutes and a taper lead but hey-ho...

Worked perfectly, the only odd thing was the fact that the spindle was running at the start, then when it hits  the macro call it stops the spindle and restarts it, presumably in sync mode.

Its not worth messing with the post, if it was even possible as the tapping section does not call the M3, thats already done before it gets to tapping.

But it all worked and very nicely too :)

1008
General Mach Discussion / Re: Machine Coord's
« on: October 13, 2016, 01:30:29 PM »
Only way to zero the machine DRO's is to home the machine :)

1009
Sorted, needed a modal reset adding :)

Now i can use rigid tapping coded for the Cs-Labs macro from Fusion360 :)

Code looks like below, seems to be all there, what do you reckon Hood?
This code is for an M6x1 tap at 350rpm 10mm deep.
Feed and retract are the same at present as there is no input for a retract rpm but if i want to retract faster i can hard code a multiplier in the post.

Code: [Select]
(1)
(T98  D=6. CR=0. - ZMIN=-10. - RIGHT HAND TAP)
G90 G94 G91.1 G40 G49 G17
G21
G53 G0 Z0.
G90

(DRILL2)
M5
M9
T98 M6
S350 M3
G54
M7
G0 X3. Y0.
G43 Z25. H98
Z5.
M84 Q-10. P1. S350 R350
Z5.
X22.871 Y0.094
M84 Q-10. P1. S350 R350
Z5.
X47.5 Y-0.465
M84 Q-10. P1. S350 R350
Z5.
G80
Z25.

M9
G53 G0 Z0.
G90
M30

1010
Getting somewhere now, just one last hurdle to cross.

Trying to make the post output a Z retract regardless of if it wants to or not ;)

This is for rigid tapping from Fusion360 using the CS-Labs RT Macro which uses Q instead of Z for movement but the post cannot see any Z move and will not output the retract move after :)