Siemens SINUMERIK 840D sl Operating Manual page 483

4. Thread with advance:
The tool moves at rapid traverse to the return distance VR and then to the next starting
position.
Thread with run-in:
The tool moves at rapid traverse to the return distance VR and then back to the starting
position.
5. Steps 3 and 4 are repeated until the thread is finished.
6. The tool moves back to the retraction plane at rapid traverse.
Thread machining can be stopped at any time with the "Rapid lift" function. It ensures that the
tool does not damage the thread when it is raised.
Procedure for longitudinal thread, tapered thread, or face thread
Parameters in the "Complete" mode (longitudinal thread)
G code program parameters
Input
PL Machining plane
SC Safety clearance
Milling
Operating Manual, 05/2017, A5E40868956
1. The part program or ShopMill program to be processed has been created
and you are in the editor.
2. Press the "Turning" softkey.
3. Press the "Thread" softkey.
The "Thread" input window opens.
4. Press the "Longitudinal thread" softkey.
The "Longitudinal Thread" input window opens.
- OR -
Press the "Tapered thread" softkey.
The "Tapered Thread" input window opens.
- OR -
Press the "Face thread" softkey.
The "Face Thread" input window opens.
ShopMill program parameters
● Complete
T
mm D
S / V
Programming technological functions (cycles)
10.4 Turning - milling/turning machine
Tool name
Cutting edge number
Spindle speed or
Constant cutting rate
rpm
m/min
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