Siemens SINUMERIK 828D Operating Manual page 264

Programming technological functions (cycles)
8.2 Milling
Machining type, rough finishing
If there is too much residual material on the slot walls, unwanted corners are removed to the
finishing dimension.
Machining type, finishing:
When finishing walls, the milling cutter travels along the slot walls; to do this, it is again fed in
the Z direction, increment by increment. During this process, the milling cutter travels
through the safety clearance beyond the beginning and end of the slot, so that an even slot
wall surface can be guaranteed across the entire length of the slot.
Machining type, edge finishing
Edge finishing is performed in the same way as finishing, except that the last infeed (finish
base) is omitted.
Machining type, finishing base:
When finishing the base, the milling cutter moves backwards and forwards once in the
finished slot.
Machining type, chamfering
Chamfering involves breaking the edge at the upper slot edge.
Additional supplementary conditions
● Finishing
● Edge finishing
● Chamfering
264
1/2 slot width W ≤ milling cutter diameter
Finishing allowance UXY ≤ milling cutter diameter
The tip angle must be entered into the tool table.
Operating Manual, 06/2009, 6FC5398-7CP20-0BA0
HMI sl Milling