G83 deep hole drilling

[mike852]

Does anyone know how to degrease the peck in a G83 drilling cycle on a fanuc control also can you give an initial peck value in the same cycle? I can do this with my fadal control but can not figure it out with the fanuc control.

[El_gatillo]

G83 Variabel pitch on an fanuc should be.

G83 X... Y... Z... R... I...-J... K... L... F... ;

I: Initail Value
J: Reducing Value
K: Final Value

L:= 0 only x,y positioning
=# Number of hole repeats if useing G76/G77 Shift

[TOOLHEAD]

I run an ikegai with a fanuc 16m. I just currently wondered the same thing. My boring mill is not set up to do it. If you write a drill program in mastercam lathe it will post it in mill events. like:
N1490 G0 Z.1
N1500 Z-4.57
N1510 G1 Z-4.7
N1520 G0 Z.1
N1530 Z-4.67
N1540 G1 Z-4.8
N1550 G0 Z.1 (of course i changed the Z's to W's in my editor)
N1560 Z-4.77
N1570 G1 Z-4.9
N1580 G0 Z.1
N1590 Z-4.87
N1600 G1 Z-5.
N1610 G0 Z.1
N1620 Z-4.97
N1630 G1 Z-5.1
N1640 G0 Z.1
N1650 Z-5.07
N1660 G1 Z-5.2
N1670 G0 Z.1
I wrote one that went 36 inches deep and saved it. So if i want to start at -4.57 deep in the hole with my intermediate drill i pull that program up copy what i want from that program and put it into my program. or sub program if you have a lot of holes. It may seem crude but its better than drilling air and it saves time.