Siemens Sinumerik 840C/840 Sinumerik 810/820T cycle L97 Thread Cutting Cycle can be used for
External thread cutting
Internal threading
Taper threading
Transversal threads.
The tool infeed is automatic and is degressively quadratic. this keeps cut cross-section constant.
For program example read Sinumerik L97 Thread Cutting Cycle Program Example for External Threading
Sinumerik L97 Thread Cutting Cycle
L97 Thread Cutting Cycle Parameters
R20 – Thread pitch.
R21 – Start point of the thread in X-axis.
R22 – Start point of the thread in Z-axis.
R23 – Number of idle cuts (idle passes).
R24 – Thread depth (positive value = inside thread, negative value = outside thread).
R25 – Finishing allowance.
R26 – Run-in path.
R27 – Run-out path.
R28 – Number of roughing cuts.
R29 – Infeed angle (half flank angle).
R31 – End point of the thread in X-axis.
R32 – End point of the thread in Z-axis.
