CNC Machinist Calculator UltraG75 OD and ID peck grooving cycle
Fanuc G-code · Lathe
Pecks along X with chip breaking retracts. Use it for a single groove, or add Z and Q to step across a wide groove.
Format
G75 R then G75 X(U) [Z(W)] P [Q] [R] F
Addresses
| Address | What it does |
|---|---|
R (first block) | Retract amount after each peck |
X Z | Groove bottom diameter and last Z position |
P | Peck depth in X, radius value, no decimal point |
Q | Z step between plunges, no decimal point |
R (second block) | Relief at the bottom, usually left out |
F | Feed |
How it works
Non-modal.
Example program
T0606 (.125 GROOVE TOOL)
G97 S800 M03 (CONSTANT RPM)
G00 X2.1 Z-.5 M08 (POSITION AT FIRST PLUNGE)
G75 R.01 (RETRACT .01)
…
G97 S800 M03 (CONSTANT RPM)
G00 X2.1 Z-.5 M08 (POSITION AT FIRST PLUNGE)
G75 R.01 (RETRACT .01)
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Q must be smaller than the tool width or ridges are left between plunges.
- Program Z for the edge of the insert used to touch off.
- P and Q take no decimal point. P500 is .05 in inch.
Related codes
G75 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| 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 |
| Centroid CNC12 Acorn | OD or ID groove peck cycle |
| Hurco WinMax (NC) | Multi quadrant arc mode (BNC) |
| Fadal | Tapping head cycle |
| Swiss (Citizen Star) | Grooving cycle in X |
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