Siemens SINUMERIK 840D sl Operating Manual page 517

Approach/retraction
1. The tool first moves to the starting point calculated internally in the cycle at rapid traverse.
2. The chamfer or radius is machined at the machining feedrate.
3. Cut-off down to depth X1 is performed at the machining feedrate.
4. Cut-off is continued down to depth X2 at reduced feedrate FR and reduced speed SR.
5. The tool moves back to the safety distance at rapid traverse.
If your turning machine is appropriately set up, you can extend a workpiece drawer (part
catcher) to accept the cut-off workpiece. Extension of the workpiece drawer must be enabled
in a machine data element.
Procedure
G code program parameters (cut-off)
PL Machining plane
SC Safety clearance
F Feedrate
Milling
Operating Manual, 05/2017, A5E40868956
Machine manufacturer
Please refer to the machine manufacturer's specifications.
1. The part program to be executed has been created and you are in the
editor.
2. Press the "Turning" softkey.
3. Press the "Cut-off" softkey.
The "Cut-off" input window opens.
mm
*
Programming technological functions (cycles)
10.4 Turning - milling/turning machine
ShopMill program parameters
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or
Constant cutting rate
mm/min
mm/rev
rpm
m/min
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