Siemens SINUMERIK 828D - Page 579

Programming technology functions (cycles)
9.7 Additional cycles and functions in ShopTurn
Turning
Operating Manual, 01/2015, 6FC5398-8CP40-5BA2
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.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Procedure
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.
Parameters
Description
Unit
T
Tool name
D
Cutting edge number
F Feedrate mm/min
mm/rev
Table
Thread table selection:
• without
• ISO metric
• Whitworth BSW
• Whitworth BSP
• UNC