G84.2/G84.3: Rigid threading format FS15 / left

G84.2: rigid threading format FS15-T (lathe). G84.3: left-hand rigid tapping.

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: Tapping cycles
Machine: Milling, Mill-turn
Risk: High
Example: G84.2 R2 Z-20 Q5 F2.0 / G84.3 R2 Z-20 F2.0

G84.2/G84.3

Tapping cycles

Rigid threading format FS15 / left

E.g.:

G84.2 R2 Z-20 Q5 F2.0 / G84.3 R2 Z-20 F2.0

Parameters

Z: Fondo de la rosca. · mm
R: Plano de referencia: cota Z a la que la herramienta pasa de rápido a avance y a la que vuelve entre agujeros con G99. · mm
Q: Picado (peck tapping). · mm
F: Paso × rpm (G94) o paso (G95). · mm/min o mm/vuelta

Machine: Milling, Mill-turnRisk: High

Fanuc · Haas

Fanuc: G84.2 is FS15 format; G84.3 only in controls with option. Check M29 synchronization.
Haas: Haas uses G84 with M29 for standard rigid tapping.

Frequently Asked Questions (FAQ)

What does G84.2/G84.3 mean in a CNC program?

G84.2: rigid threading format FS15-T (lathe). G84.3: left-hand rigid tapping. In the catalogue it appears as "Rigid threading format FS15 / left", within the Tapping cycles family.

Can you give me an example of G84.2/G84.3?

G84.2 R2 Z-20 Q5 F2.0 / G84.3 R2 Z-20 F2.0 — G84.2: rigid threading format FS15-T (lathe). G84.3: left-hand rigid tapping.

Which machines use G84.2/G84.3?

G84.2/G84.3 is used in: Milling, Mill-turn.

What should you watch out for with G84.2/G84.3?

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.

Related tools

CNC G-code Simulator

CNC IDE: editing with G/M tooltips, line inspector, conversion between controls and 2D/3D toolpath.

CNC Alarms Guide

CNC Alarms and Solutions Guide. Enter the error code or symptom to find the cause and how to repair it at the machine.

Calculate cycle time

Estimate CNC turning and milling cycle time from G-code. Calculate parts per hour with a breakdown of cutting, rapids, canned cycles and tool changes.