HEIDENHAIN SW 688945-03 - Manual (Page 229)

HEIDENHAIN CNC PILOT 620/640 229
4.5 Recessing cy
cles
Type of machining for technology database access: Recess turning
Cycle run
1 Approach workpiece from starting point
2 Finish the first side, then finish the contour valley up to position
just before contour end point X2, Z2
3 Move paraxially to the starting point X/end point Z2
4 Finish second side, then finish remainder of contour valley
5 Return to starting point on paraxial path
6 Move to the tool change point according to the G14 setting
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