Siemens SINUMERIK 840D sl Operating Manual page 476

Programming technology functions (cycles)
10.4 Milling
● Edge finishing
Edge finishing is performed in the same way as finishing, except that the last infeed (finish
base) is omitted.
● Chamfering
Chamfering involves edge breaking at the upper edge of the circumferential groove.
Figure 10-16 Geometries when chamfering inside contours
Note
The following error messages can occur when chamfering inside contours:
● Safety clearance in the program header too large
● Immersion depth too large
● Tool diameter too large
Procedure
476
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.
This error message appears when chamfering would be possible through the reduction
of the immersion depth ZFS.
This error message appears when the tool would already damage the edges during
insertion. In this case, the chamfer FS must be reduced.
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 "Groove" and "Circumferential groove" softkeys.
The "Circumferential Groove" input window opens.
Operating Manual, 05/2017, A5E40868721
Turning