Fanuc lathe drilling and tapping post processor help required

[iporter6]

Hi good people of Fusion CAM world.  I posted this yesterday, but it got deleted, this is my second attempt.

I need some help with modifying my Fanuc post for my 2012 Doosan Lynx 220 2 axis, no live tool with Fanuc i.

Sorry if it’s a big long first question on the forum, but I’ll try to put as much info here as I can, if there is any info missing or any questions, please just say.  I have done a few basic changes to my post, but this is too much to work out myself.

So, the problem…….Drilling and tapping post needs 2 basic changes.

Current fusion post of peck drill with full retract using Fanuc general turning.  I need lines N17 and N23 to be posted differently.

(DRILL2)

N14 T0707

(6.9 DRILL)

N15 G54

N16 M8

N17 G98  (I want this to be G99)

N18 G97 S550 M3

N19 G0 X0. Z10.

N20 G0 Z5. (it seems to repeat these Z positions but no problem really)

N21 Z10.

N22 Z5.

N23 G83 X0. Z-16.5 R5. Q15. F44.  (Q NEEDS TO BE 15000 no decimal. F NEEDS TO BE IN MM/REV)

N24 G80

N25 Z10.

Proven hand written code for full retract peck drill cycle that I use in “pass through”

G28 U0. W0.   (HOME, expensive if you forget this!)

T0808 (8.8 drill)

G54

M8

G99 (FEED PER REV)

G97 S2500 M3

G0 X0. Z10.  (RAPID TO POSITION)

G83 X0. Z-16.5 R0. Q15000 F0.15 (SEE NOTES BELOW)

G80

Z10. M9

G28 U0. W0.

So the important bits are:

G99 = feed per rev

G83 = drill peck full retract

Z= drill depth in absolute

R= return plane in RELATIVE from current position

Q= peck depth in MICRONS WITH NO DECIMAL POINT (15mm)

F= feed per rev

Very similar story with the tapping cycle.

Fusion post

N29 T0909

(516-24 TAP)

N30 G54

N31 M8

N32 G98  (NEEDS TO BE G99)

N33 G97 S250 M3

N34 G0 X0. Z10.

N35 G0 Z5. (REPEATS, BUT NO PROBLEM)

N36 Z10.

N37 Z5.

N38 M29 S250

N39 G84 X0. Z-10. R5. P0 Q2. F264.5  (Q needs to be in microns with no decimal point, F in MM/REV)

N40 G80

N41 Z10.

MANY THANKS FOR READING THIS FAR!

Ivan

[seth.madore]

It's not a good or bad idea. It does have it's drawbacks, from a liability standpoint, that is certain. If people want it, perhaps they can reach out privately?