Operation Manual

HEIDENHAIN CNC PILOT 640 313
4.7 Drilling cycles
Thread milling, axial
Select drilling
Select thread milling, axial
The cycle mills a thread in existing holes.
Use threading tools for this cycle.
Danger of collision!
Be sure to consider the hole diameter and the diameter of
the milling cutter when programming approach radius R.
Cycle parameters
X, Z Starting point
C Spindle angle (C-axis position)—(default: current spindle
angle)
Z1 Starting point of thread (default: drilling starts from Z)
Z2 End point of thread
F1 Thread pitch (= feed rate)
J Direction of thread
 0: Right
 1: Left
I Thread diameter
R Approach radius (default: milling diameter)/2)
H Cutting direction
 0: Up-cut milling
 1: Climb milling
V Milling method
 0: The thread is milled in a 360-degree helix
 1: The thread is milled in several helical paths (single-
point tool)
SCK Safety clearance (siehe Seite 140)