Siemens SINUMERIK 840D sl Operating Manual page 494

Programming technology functions (cycles)
8.7 Additional cycles and functions in ShopTurn
4. Steps 2 and 3 are repeated until the programmed final drilling depth Z1 is reached.
5. The direction of rotation of the spindle reverses and the tool retracts to the safety
Approach/retraction for chipbreaking
1. The tool drills in the direction of the longitudinal axis at the programmed spindle speed S
2. The tool retracts by the retraction clearance V2 for chipbreaking.
3. The tool then drills to the next infeed depth at spindle speed S or feedrate V.
4. Steps 2 and 3 are repeated until the programmed final drilling depth Z1 is reached.
5. The direction of rotation of the spindle reverses and the tool retracts to the safety
The machine manufacturer may have made specific settings for centered tapping in a
machine data element.
Procedure
494
clearance at spindle speed SR or cutting rate VR.
or feedrate V as far as the first infeed depth (maximum infeed depth D).
clearance at spindle speed SR or cutting rate VR.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
1. The ShopTurn program to be processed has been created and you are
in the editor.
2. Press the "Drilling" and "Drill centric" and "Thread centric" softkeys.
The "Centric tapping" input window opens.
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
Turning