CNC Machinist Calculator UltraHome › G-codes › Mitsubishi M70 M80 › G71
G71 Longitudinal rough cutting cycle
Mitsubishi M70 M80 G-code · Lathe
Roughs along Z using a shape from N P to N Q, leaving finish stock for G70.
Format
G71 U R then G71 P Q U W F
Addresses
| Address | What it does |
|---|---|
U first block | Depth of cut per side |
R | Retract amount |
P Q | First and last shape sequence numbers |
U W | Finish stock in X diameter and Z |
F | Roughing feed |
How it works
Non-modal, group 00.
Example program
G00 X2.1 Z.1 (START POINT)
G71 U.08 R.02 (DEPTH AND RETRACT)
G71 P10 Q20 U.02 W.005 F.012 (ROUGH)
N10 G00 X1. (SHAPE START)
…
G71 U.08 R.02 (DEPTH AND RETRACT)
G71 P10 Q20 U.02 W.005 F.012 (ROUGH)
N10 G00 X1. (SHAPE START)
…
The full 7-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- U in the first block is depth of cut, in the second block it is finish stock.
- For ID roughing, the X finish stock U is negative.
Related codes
G71 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Stock removal in turning, rough cycle |
| Haas NGC | Bolt hole arc |
| Mazak (EIA) | OD and ID roughing cycle, Z direction |
| Okuma OSP | Return level for fixed cycles |
| Siemens 840D 828D | Metric input for geometry |
| Heidenhain TNC (ISO) | Millimeter units |
| Fagor 8055 8065 | Millimeter programming |
| LinuxCNC Tormach | Lathe roughing cycle, along Z |
| Mach3 Mach4 | Metric units, Mach3 |
| Centroid CNC12 Acorn | Rough turning cycle |
| Hurco WinMax (NC) | Metric input (Basic NC) |
| Fadal | Check for metric setting, older code |
| Swiss (Citizen Star) | Rough turning cycle |
Every G-code for Mitsubishi M70 M80 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 G71 in the app All Mitsubishi M70 M80 G-codes