Thread Centered - Siemens SINUMERIK 840D sl Operating Manual

Programming technology functions (cycles)
10.7 Additional cycles and functions in ShopTurn
Parameter Description
D Maximum depth infeed
XD Center offset in X direction
The center offset can be used for example to produce a drill hole with an exact fit. A
rotary drill (rotary drill type) or U drill (drill type) is required. Other drill types are not
suitable.
The maximum center offset is stored in a machine data code.
Hidden parameters
Parameter Description
Drilling depth Drilling depth in relation to the tip
FD1 Percentage for the feedrate for the first infeed
DF Percentage for each additional infeed
V1 Minimum infeed
V2 Retraction distance after each machining step
Clearance distance The clearance distance is calculated by the cycle
DBT Dwell time at drilling depth
DT Dwell time at final drilling depth
10.7.2

Thread centered

Function
Using the "Centered tapping" cycle, tap a righthand or lefthand thread at the center of the face
surface.
During machining, either the main spindle or counterspindle rotates.
You can alter the spindle speed via the spindle override; feedrate override is not operative.
You can select drilling in one cut, chipbreaking or retraction from the workpiece for stock
removal.
The tool is moved with rapid traverse to the programmed position, allowing for the retraction
plane and safety clearance.
564
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Value Can be set in SD
Tip
90 %
90 %
1.2 mm
1.4 mm
Automatic
0.6 s
0.6 s
Operating Manual, 05/2017, A5E40868721
Unit
mm
x
x
x
x
x
x
Turning