G70/G71/G72/G73: Lathe roughing and finishing family
It groups together common finishing cycles, longitudinal roughing, frontal roughing and pattern repetition.
For reference only: syntax changes with the control, the post-processor and the machine parameters. Check the official manual and run a simulation before cutting. Legal notice.
- Family
- Lathe equivalences
- Machine
- Turning, Mill-turn
- Risk
- High
- Example
- G71 ... / G70 P... Q...
G71 ... / G70 P... Q...Parameters
- P Q
- Bloques N de inicio y fin del perfil que define la pieza acabada (común a G70/G71/G72/G73).
- U W
- Creces de acabado en X (diámetro) y Z. En G73 el 1er bloque usa U W como distancia total a quitar. · mm
- D / R
- G71/G72: profundidad de pasada (D en Haas, U del 1er bloque en Fanuc) y retroceso R. G73: R = número de pasadas. · mm
- I K
- G73 (Haas): distancia a desbastar en X y Z desde el bruto preformado. · mm
- F S
- Avance y velocidad del desbaste; G70 usa los F/S programados dentro del perfil.
Machine: Turning, Mill-turnRisk: High
Fanuc · Haas
G70 / G71 / G72 / G73- Fanuc: G71 and G72 can have one or two line format depending on the Fanuc generation.
- Fanuc: Check P/Q, U/W stock, depth of cut and profile direction.
- Haas: Haas uses syntax similar to Fanuc, but not identical in all parameters.
Siemens · Fagor
- Siemens: Main conceptual equivalence: CYCLE95.
- Fagor: Conceptual equivalence: Fagor turning canned cycles by model.
Related:
Frequently Asked Questions (FAQ)
What does G70/G71/G72/G73 mean in a CNC program?
It groups together common finishing cycles, longitudinal roughing, frontal roughing and pattern repetition. In the catalogue it appears as "Lathe roughing and finishing family", within the Lathe equivalences family.
How is G70/G71/G72/G73 written on each control?
Fanuc: G70 / G71 / G72 / G73 · Haas: G70 / G71 / G72 / G73. The exact syntax depends on the control version and the machine parameters: always confirm with the manufacturer's manual.
Can you give me an example of G70/G71/G72/G73?
G71 ... / G70 P... Q... — It groups together common finishing cycles, longitudinal roughing, frontal roughing and pattern repetition.
Which other codes is G70/G71/G72/G73 combined with?
In practice G70/G71/G72/G73 appears alongside these codes: CYCLE95, Fagor torneado, G96/G97. It is worth reading them together, because the state one leaves behind conditions what the next one does.
Which machines use G70/G71/G72/G73?
G70/G71/G72/G73 is used in: Turning, Mill-turn.
What should you watch out for with G70/G71/G72/G73?
High risk: a mistake here can cause a crash, a broken tool or an out-of-tolerance part. Simulate the program and dry-run it before cutting.
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