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G75 OD or ID groove peck cycle
Centroid CNC12 Acorn G-code · Lathe
Pecks in X for OD or ID grooving. With a Z shift and stepover it cuts a groove wider than the tool.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
G75 R then G75 X or U Z or W P Q [R] [L] F
Addresses
| Address | What it does |
|---|---|
R line 1 | Peck retract amount |
X U | Final groove diameter |
Z W | Final Z shift position |
P | X peck depth |
Q | Z stepover |
R line 2 | Z escape amount |
L | Dwell |
How it works
One shot.
Example program
T0303 ; .125 GROOVE TOOL
G97 S800 M3
G0 X1.6 Z-1. M8 ; START POINT
G75 R.01 ; PECK RETRACT
…
G97 S800 M3
G0 X1.6 Z-1. M8 ; START POINT
G75 R.01 ; PECK RETRACT
…
The full 7-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Groove width equals the tool width plus the total Z shift.
- The first pass has no escape so the tool does not drag on the wall.
- Type a decimal point on P and Q, or parameters 245 and 246 may read them as whole units.
Related codes
G75 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | OD and ID peck grooving cycle |
| Haas NGC | OD and ID grooving cycle |
| Mazak (EIA) | X axis grooving cycle |
| Okuma OSP | Automatic chamfering |
| Mitsubishi M70 M80 | Longitudinal cut-off and grooving cycle |
| Siemens 840D 828D | Fixed point approach |
| Fagor 8055 8065 | Probing move until touch |
| Hurco WinMax (NC) | Multi quadrant arc mode (BNC) |
| Fadal | Tapping head cycle |
| Swiss (Citizen Star) | Grooving cycle in X |
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