HEIDENHAIN 548431-05 User Manual page 346

5
MFS: M at beginning: M function that is executed at the
beginning of the machining step
MFE: M at end: M function that is executed at the end of the
machining step
WP: No. of spindle – Displays which workpiece spindle is used
to execute the cycle (machine-dependent)
Main drive
Opposing spindle for rear-face machining
BW: Angle in the B axis (machine-dependent)
CW: Reverse the tool (machine-dependent)
HC: Shoe brake (machine-dependent)
DF: Miscellaneous function (machine-dependent)
Type of machining for technology database access
depends on the tool type:
Drillg for twist drills
Predrilling with indexable insert drills
If AB and V are programmed, the feed rate is reduced by
50 % during both pre-drilling and through-boring.
Cycle run:
1 Position the spindle to the Spindle angle C (in Machine mode:
machining from current spindle angle)
2 If defined, move at rapid traverse to the Start point drill X1
3 If defined, spot drill at reduced feed rate
4 Depending on Drilling variants V:
Through-drilling reduction:
Drill at programmed feed rate to position X2 – AB
Drill at reduced feed rate to End point drill X2
No through-drilling reduction:
Drill at programmed feed rate to End point drill X2
Remain at end of hole for Period of dwell E if defined
5 Retract
If X1 is programmed, to Start point drill X1
If X1 is not programmed, to Start point X
6 Move to the Tool change point according to the setting in G14
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Teach-in | Drilling cycles
HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017