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G85 Boring cycle, feed out / LAP bar turning rough cycle
Okuma OSP G-code · Mill, Lathe
On mills: Boring cycle, feed out
Feeds to depth and feeds back out with the spindle running. Used for reaming and some boring.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | R point |
F | Feed rate |
How it works
Modal, fixed cycle group. Cancel with G80.
Example program
N1 G15 H1 (WORK COORDINATE SYSTEM 1)
N2 T9 M06 (.500 REAMER)
N3 G00 G90 X1. Y1. S500 M03 (FIRST HOLE)
…
The full 7-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Okuma lists G85, G86 and G89 all as boring cycles. Check the retract motion of each on your machine.
- On an Okuma lathe G85 is the LAP rough turning cycle.
On lathes: LAP bar turning rough cycle
Roughs the part in straight passes to the contour named after G85, leaving U and W for finish. This is the Okuma version of Fanuc G71 roughing.
Format
Addresses
| Address | What it does |
|---|---|
Nname | Sequence name of the first contour block |
D | Depth of cut, must be more than 0 |
F | Rough feed rate |
U | Finish stock in X |
W | Finish stock in Z |
How it works
Cycle call. One shot.
Example program
N2 G00 X3.2 Z.1 T010101 (ROUGH TOOL)
N3 G96 S500 M03 (500 SFM)
N4 G85 NAT01 D.1 F.012 U.02 W.005 (LAP ROUGH TURN)
…
The full 10-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Do not put S, T or M codes in the G85 block.
- Without D or with D0 the control alarms.
- Finish with G87 using the same contour name.
Related codes
G85 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Boring cycle, feed out |
| Haas NGC | Boring cycle, feed in and feed out |
| Mazak (EIA) | Reaming cycle |
| Mitsubishi M70 M80 | Boring cycle, feed out |
| Brother Speedio | Boring cycle feed out |
| Fagor 8055 8065 | Reaming canned cycle |
| LinuxCNC Tormach | Boring cycle, feed out |
| Mach3 Mach4 | Bore, feed out |
| Centroid CNC12 Acorn | Boring cycle, feed out |
| Hurco WinMax (NC) | Boring, feed in and feed out |
| Fadal | Bore in, bore out |
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