HEIDENHAIN SW 688945-03 - Manual (Page 237)

HEIDENHAIN CNC PILOT 620/640 237
4.5 Recessing cy
cles
Type of machining for technology database access: Recess turning
Cycle run
1 Calculate the proportioning of cuts
2 Approach the workpiece from starting point for first pass
3 Execute the first cut (recessing)
4 Machine perpendicularly to recessing direction (turning)
5 Repeat 3 to 4 until the defined area has been machined
6 Return to starting point on paraxial path
7 Move to the tool change point according to the G14 setting
MT M after T: M function that is executed after the tool call T
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 Displays which workpiece spindle is used to process the
cycle (machine-dependent)
 Main drive
 Opposing spindle for rear-face machining