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G88 Boring cycle with manual retract
Brother Speedio G-code · Mill
Feeds to Z, dwells and stops so the operator can retract by hand.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
G88 X Y Z R P F
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | R plane |
P | Dwell |
F | Feed rate |
How it works
Modal, canned cycle. Cancel with G80.
Example program
G98 G88 X1. Y1. Z-.5 R.1 P500 F4. (BORE THEN MANUAL)
G80 (CANCEL)
G00 Z1. (RETRACT)
G80 (CANCEL)
G00 Z1. (RETRACT)
Example is in inch. Check offsets and clearances first.
Watch out for
- Rarely used on production tapping centers.
Related codes
G88 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Boring cycle, manual retract |
| Haas NGC | Boring cycle, dwell and manual retract |
| Mazak (EIA) | Side tapping cycle, live tool |
| Okuma OSP | LAP continuous thread cutting cycle |
| Mitsubishi M70 M80 | Boring cycle, manual retract |
| Fagor 8055 8065 | Circular pocket canned cycle |
| LinuxCNC Tormach | Boring cycle, manual out, not implemented |
| Mach3 Mach4 | Bore, manual retract |
| Hurco WinMax (NC) | Rigid tap (BNC) or bore manual out (ISNC) |
| Fadal | Bore in, dwell, bore out |
| Swiss (Citizen Star) | Side tapping cycle |
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