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G72 Rough facing cycle
Swiss (Citizen Star) G-code · Lathe
Rough faces a profile in X steps from the P and Q blocks.
Format
G72 W R | G72 P Q U W F
Addresses
| Address | What it does |
|---|---|
W first | Depth per pass in Z |
R | Retract amount |
P Q | Profile first and last block |
U W second | Finish stock |
F | Rough feed |
How it works
One shot.
Example program
G00 X.55 Z-.02 T0100 (TOOL 1)
G72 W.01 R.005
G72 P10 Q20 U.005 W.002 F.002 (ROUGH FACE)
N10 G00 Z.1
…
G72 W.01 R.005
G72 P10 Q20 U.005 W.002 F.002 (ROUGH FACE)
N10 G00 Z.1
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Rarely used on Swiss parts but it works the same as on a turret lathe.
Related codes
G72 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Stock removal in facing, rough cycle |
| Haas NGC | Bolt holes along an angle |
| Mazak (EIA) | Facing roughing cycle, X direction |
| Okuma OSP | Compound thread cycle, transverse |
| Mitsubishi M70 M80 | Face rough cutting cycle |
| Heidenhain TNC (ISO) | Scaling factor |
| Fagor 8055 8065 | Scaling factor |
| LinuxCNC Tormach | Lathe roughing cycle, facing along X |
| Centroid CNC12 Acorn | Rough facing cycle |
Every G-code for Swiss (Citizen Star) in your pocket. The app has the full example programs, search by number or shop word, a line decoder and calculators for tapping, threading and drilling.
Open G72 in the app All Swiss G-codes