Siemens SINUMERIK 828D Operating Manual page 579

Approach/retraction for chipbreaking
1. The tool drills in the direction of the longitudinal axis at the programmed spindle speed S
or feedrate V as far as the first infeed depth (maximum infeed depth D).
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
clearance at spindle speed SR or cutting rate VR.
The machine manufacturer may have made specific settings for centered tapping in a
machine data element.
Procedure
Parameters
T
D
F
Table
Turning
Operating Manual, 01/2015, 6FC5398-8CP40-5BA2
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.
Description
Tool name
Cutting edge number
Feedrate
Thread table selection:
without
•
ISO metric
•
Whitworth BSW
•
Whitworth BSP
•
UNC
•
Programming technology functions (cycles)
9.7 Additional cycles and functions in ShopTurn
Unit
mm/min
mm/rev
579