G76 CNC Lathe Multi-Pass Threading Cycle | CNC G-Code Programming Guide

G76 CNC Lathe Multi-Pass Threading Cycle: Programming, Syntax & Practical Rules

Automated multi-pass external and internal threading with constant chip load calculation and modified flank infeed angles.

Engineering Specifications & Parameters

Modality	Non-Modal 2-Line Cycle
Sample Syntax	G76 P020060 Q50 R0.05 / G76 X18.4 Z-25. P800 Q150 F1.5
Classification	Multi-Pass Canned Threading Cycle
Key Application	Executes 10-20 thread passes automatically....
G-Code Directive	G76

Command Architecture & Functional Overview

G76 CNC Lathe Multi-Pass Threading Cycle is a fundamental CNC programming directive utilized across Fanuc, Siemens, Haas, and Heidenhain controllers for Automated multi-pass external and internal threading with constant chip load calculation and modified flank infeed angles..

Syntax Structure & Execution Parameters

Command Category: Multi-Pass Canned Threading Cycle (Non-Modal 2-Line Cycle).
Standard Syntax: G76 P020060 Q50 R0.05 / G76 X18.4 Z-25. P800 Q150 F1.5.
Operational Function: Executes 10-20 thread passes automatically.
Critical Safety Rule: Modified 29° flank infeed prevents tool chatter and burrs on tough stainless and superalloys.
Production Integration: Tested and standardized across UCAN ROBOT's 150+ high-precision CNC machining centers for zero-collision continuous automated manufacturing.

Explore our technical equipment capabilities in 5-Axis CNC Milling and review our standards in Precision Machining Quality Control.

Frequently Asked Questions

When should programmers use G76?

Programmers deploy this code when automated multi-pass external and internal threading with constant chip load calculation and modified flank infeed angles.

What common programming mistake causes collisions with this command?

Modified 29° flank infeed prevents tool chatter and burrs on tough stainless and superalloys.