Siemens SINUMERIK 840D sl Operating Manual page 440

Programming technology functions (cycles)
10.4 Milling
Chamfering machining
Chamfering involves edge breaking at the upper edge of the circular pocket.
Figure 10-14 Geometries when chamfering inside contours
Note
The following error messages can occur when chamfering inside contours:
● Safety clearance in the program header too large
This error message appears when chamfering would, in principle, be possible with the
parameters entered for FS and ZFS, but the safety clearance then could not be maintained.
● Immersion depth too large
This error message appears when chamfering would be possible through the reduction of
the immersion depth ZFS.
● Tool diameter too large
This error message appears when the tool would already damage the edges during
insertion. In this case, the chamfer FS must be reduced.
Procedure
440
1. The part program or ShopTurn program to be processed has been cre‐
ated and you are in the editor.
2. Press the "Milling" softkey.
3. Press the "Pocket" and "Circular pocket" softkeys.
The "Circular Pocket" input window opens.
Operating Manual, 05/2017, A5E40868721
Turning