Cut-Off (Cycle92) - Siemens SINUMERIK Series Operating Manual

Programming technological functions (cycles)
10.4 Turning - milling/turning machine
Hidden parameters
The following parameters are hidden. They are pre-assigned fixed values or values that can
be adjusted using setting data.
Parameter Description
PL Machining plane
VR Return distance
Multiple threads 1 Thread
α0 Starting angle offset
10.4.8

Cut-off (CYCLE92)

Function
The "Cut-off" cycle is used when you want to cut off dynamically balanced parts (e.g. screws,
bolts, or pipes).
You can program a chamfer or rounding on the edge of the machined part. You can machine
at a constant cutting rate V or speed S up to a depth X1, from which point the workpiece is
machined at a constant speed. As of depth X1, you can also program a reduced feedrate FR
or a reduced speed SR, in order to adapt the velocity to the smaller diameter.
Use parameter X2 to enter the final depth that you wish to reach with the cut-off. With pipes,
for example, you do not need to cut-off until you reach the center; cutting off slightly more than
the wall thickness of the pipe is sufficient.
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.
570
Machine manufacturer
Please observe the information provided by the machine manufacturer.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Value Can be set in SD
Defined in MD
52005
No
0°
Operating Manual, 08/2018, 6FC5398-7CP41-0BA0
x
Milling