HEIDENHAIN SW 688945-03 - Manual (Page 319)

HEIDENHAIN CNC PILOT 620/640 319
4.8 Milling cy
cles
Cycle run
1 Activate the C axis and position to spindle angle C at rapid
traverse (only in Teach-in mode)
2 Calculate the proportioning of cuts (infeeds to the milling planes,
infeeds in the milling planes)
Contour milling:
3 Depending on the approaching radius R, approach the workpiece
and plunge to the first milling plane
4 Mill the first plane
5 Plunge to the next milling plane
6 Repeat 5 to 6 until the milling depth is reached
Pocket milling—roughing:
3 Move to the safety clearance and plunge to the first milling plane
4 Depending on JT, machine a milling plane either from the inside
towards the outside, or vice versa
5 Plunge to the next milling plane
6 Repeat 4 to 5 until the milling depth is reached
Pocket milling—finishing:
3 Depending on the approaching radius R, approach the workpiece
and plunge to the first milling plane
4 Finish-machine the edge of the pocket—one working plane after
the other
5 Depending on JT, finish the pocket floor either from the inside
towards the outside, or vice versa
6 Finish-machine the pocket at the programmed feed rate
All versions:
7 Position to starting point Z and deactivate C axis
8 Move to the tool change point according to the G14 setting