Thread Centered - Siemens SINUMERIK 840D sl Turning Operating Manual

Programming technology functions (cycles)
10.7 Additional cycles and functions in ShopTurn
Parameter Description
S / V Spindle speed or
constant cutting rate
Machining
● Chipbreaking
● Swarf removal
Z0 Reference point Z
Z1 Final drilling depth X (abs) or final drilling depth in relation to Z0 (inc)
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.
628
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, 06/2019, A5E44903486B AB
Unit
rpm
m/min
mm
x
x
x
x
x
x
Turning