HEIDENHAIN CNC PILOT 640 User Manual page 377

DIN/ISO programming | Drilling cycles
Hole pattern: NS refers to the hole contour, and not the
definition of the pattern
Single hole without contour description: Program XS or
ZS as alternative
Hole with contour description: Do not program XS, ZS.
The NC STOP key interrupts the tapping operation
The NC START key resumes the tapping operation
Use the feed rate override function for speed changes
Spindle override is not effective
Use a floating tap holder if the driven tool is not
controlled, e.g. by a ROD encoder
Cycle run:
1 Moves at rapid traverse to the starting point:
RB not programmed: Moves up to the safety clearance
RB programmed: Moves to the position RB and then to the
safety clearance
2 Moves along Slop.length B at feed rate (synchronization of spindle
and feed drives)
3 Cuts the thread
4 Retraction position:
RB not programmed: Retraction to the starting point
RB programmed: Retraction to the position RB
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
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