Siemens SINUMERIK 840D sl Operating Manual page 412

Programming technology functions (cycles)
8.4 Milling
Approach/retraction
1. The tool approaches the center point of the slot at rapid traverse at the height of the
2. The tool is inserted into the material according to the method selected.
3. The longitudinal slot is always machined from inside out using the selected machining
4. The tool moves back to the safety distance at rapid traverse.
Machining method
You can select any of the following machining methods for milling the longitudinal slot:
● Roughing
● Finishing
● Edge finishing
● Chamfering
Procedure
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retraction plane and adjusts to the safety distance.
method.
Roughing involves machining the individual planes of the slot one after the other from the
inside out, until depth Z1 or X1 is reached.
During finishing, the edge is always machined first. The slot edge is approached on the
quadrant that joins the corner radius. During the last infeed, the base is finished from the
center out.
Edge finishing is performed in the same way as finishing, except that the last infeed (base
finishing) is omitted.
Chamfering involves breaking the upper edge of the slot.
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 "Longitudinal groove" softkeys.
The "Longitudinal Groove (SLOT1)" input window opens.
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Turning