Siemens sinumerik 840D sl Operating Manual page 358

Programming technology functions (cycles)
8.4 Milling
Machining type
You can select the machining mode for milling the circumferential slot as follows:
● Roughing
● Finishing
● Finishing of edge
● Chamfer
Procedure
Parameters, G code program
PL Machining plane
Milling direction
RP Retraction plane
SC Safety clearance
F Feedrate
358
During roughing, the individual planes of the slot are machined one after the other from
center point of the semicircle at the end of the slot until depth Z1 is reached.
In "Finishing" mode, the edge is always machined first until depth Z1 is reached. The slot
edge is approached on the quadrant, which joins the radius. In the last infeed, the base is
finished from the center point of the semicircle to the end of the slot.
Edge finishing is performed in the same way as finishing, except that the last infeed
(finish base) is omitted.
Chamfering involves edge breaking at the upper edge of the circumferential groove.
1. The part program or ShopTurn program to be processed has been
created 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.
mm
mm
mm/min
Parameters, ShopTurn program
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant
cutting rate
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
mm/min
mm/rev
rpm
m/min
Turning