Helical move Fanuc-0MD postproblem

[MIKEL12]

Hi,

So i've got my post pretty much up and running except for my problem with helical moves.

i tried to manually program a helix move down in Z by using the following code:

G2 G17 X0 Y100 Z-50 I0 J-100 F1000

And that works just fine, the machine does a helix move.
But when Edgecam outputs helical moves it seems to do this in 3D.

Post output:
G2 G17 X23.46 Y-28.97 Z-7 I0.74 J-2.88 K18.692 F2400

G2 G17 X23 Y-28 Z-7 I0.7 J-2.8 K18.6 F2400 (edited for readability)

(This move gives me error 21 on the controller and the machine stops)

So my question is: Can i make helical moves as the controller understands them or am i forced to disable helix moves in the post?

(I've checked the 900 parameters and i have 3-axis move option AND helical interpolation on this machine)

[MIKEL12]

I'm not sure but it looks like the code can be run and will give a good result if i manually remove K18.692.

But could need some help in making that happend

EDIT

Added some IF/GOTO logic to the codeconstructor to remove I,J,K
G17 remove K
G18 remove J
G19 remove I

I will test this on the machine also. If anyone sees a problem with this please warn me

EDIT2

Tried it on the machine and it makes nice helix spirals now.

[jsanders]

Originally Posted by MIKEL12 So my question is: Can i make helical moves as the controller understands them or am i forced to disable helix moves in the post? (I've checked the 900 parameters and i have 3-axis move option AND helical interpolation on this machine)

Simply turn on the 'Suppress Pitch in Helical Moves' option (NC Style section, Circular Interpolation page).

[MIKEL12]

I don't have that option in codewizard, maybe they added it later ? I'm running 2009R1

[jsanders]

Originally Posted by MIKEL12 I don't have that option in codewizard, maybe they added it later ? I'm running 2009R1

It's there, in the adaptive templates. You're using a superceded post. I've attached a screen shot of the dialog with the Generic ISO template at 2009 R1 version.

A quick way to tell is that when you're in Edgecam with a sequence, the milling cutter dialog has a spindle page tab with posts created from adaptive templates.

Planit has done a great job of keeping the Code Wizard interface very similar between the superceded and adaptive templates, but the posts are quite different. The adaptive ones have been around for some time and do alot of things much better than the old types. You really should start off with the adaptive types whenever you build a new post to gain the best functionality possible.

[MIKEL12]

Figures, been doing it the hard way then...

Well at least i learnt something for next time i make a postprocessor. This one works fine now so i wont touch it, but i have another mill that i will start work on soonish.

Thanks alot jsanders, this will probably ease future pains