HEIDENHAIN SW 54843x-03 - Manual (Page 268)

268 Cycle programming
4.5 Recessing cy
cles
Type of machining for technology database access: Finishing
Cycle run
1 Calculate the proportioning of cuts
2 Approach the workpiece from the starting point to the safety
clearance
3 Move at feed rate to undercut diameter I and dwell at this
position (for two revolutions)
4 Retract and approach for next pass
5 Repeat 3 to 4 until the corner point Z1 is reached
6 After the last pass, finish the adjoining plane surface, starting from
end point X2,
if defined
7 Machine chamfer/rounding, if defined
8 Return to starting point on diagonal path
9 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