Machining cycle
Threading
External and internal threads: right/left-hand, multi-start, with lead-in and lead-out


Cycle form: internal threading shown — geometry and thread mode on the left, live 2D toolpath simulator on the right.
The threading cycle supports external and internal threads, right- and left-hand direction, multi-start threads, and configurable lead-in/lead-out sections for the tool.
The threading motion syntax switches between G32 and G33 with a selectable pitch address letter (I/K/F) — matching your specific controller and post-processor.
Who needs this cycle
Needed for cutting standard cylindrical threads — from fasteners to multi-start threads — without manually calculating passes.
Key form parameters
- •External/internal thread diameter
- •Thread pitch
- •Number of starts
- •Length of the threaded section
- •Lead-in and lead-out
- •Right/left-hand direction
