Interactive Klartext course · Lesson 11 / 15
Circular pocket milling with CYCL DEF 208
Define a circular pocket operation with a target diameter, depth, infeed and overlap, then call it at the pocket centre.
What you will learn
- Set safety clearances, depth, plunge feed and infeed per pass.
- Define nominal diameter, pre-drilled diameter and milling direction.
- Control path overlap with Q370 and call the cycle with M99.
How it works
Cycle 208 mills a circular pocket or bore around the programmed centre. Its parameter set controls vertical approach, helical infeed and radial machining.
The active tool and pocket dimensions must form a valid cutting setup. TNC Sim checks the supported parameters and visualizes each generated pass.
Klartext example
Try the essential blocks
This compact example introduces the lesson topic. Use the guided practice for the complete checked exercise.
CYCL DEF 208 ; Circular Pocket Milling
Q200=+2 ; safety clearance
Q201=-10 ; depth
Q206=+150 ; plunge feed
Q334=+2 ; infeed per pass
Q203=+0 ; surface coordinate
Q204=+30 ; second safety clearance
Q335=+30 ; nominal diameter
Q342=+0 ; pre-drilled diameter
Q351=+1 ; milling mode
Q370=+1 ; path overlap factor
L X+50 Y+50 FMAX M99Ready to practice?