Siemens SINUMERIK 802D sl Programming And Operating Manual page 64

Manual machining
5.4 Manual machining using cycles (functions)
You can access the "Manual tapping" function by pressing the softkey "Tapping" in the
drilling cycle overview.
Alternatively, you can select "Tapping" with <Cursor keys> and activate with the input key.
Figure 5-25
Parameter
Parameter
Reference z0
Drilling depth l
Lead s
With compensating chuck /
Rigid tapping
Tapping operation
The machining sequence is as follows:
1. Starting from the current axis position, the tool is traversed to the cycle start point in the
2. The transverse axis is positioned to the center of rotation.
3. The controller then waits (at the cycle start point) for the next zero mark of the spindle
4. When the thread length (end point) is reached, the spindle and longitudinal axis change
5. The longitudinal axis then stops at the cycle start point and the spindle changes direction
64
Tapping
Description
Start position for the drill hole in the longitudinal axis
(absolute position of Z axis)
Enter the thread length here. The tapping direction is always towards the chuck and cannot
be reversed. The choice of "left-hand or right-hand thread" depends on the direction of
rotation of the spindle and the thread tapping tool.
Enter the thread pitch here.
Depending on the manufacturer, you can select as to whether the machining is carried-out
with or without compensating chuck.
longitudinal axis. This is calculated internally from the value for the "Reference z0"
parameter (taking into account the clearance distance).
encoder in order to start the axis movement in the longitudinal axis (defined thread start
point).
direction and withdraw the tapping tool from the drill hole again.
again. The spindle is now running in the direction in which it was originally started.
Programming and Operating Manual, 06/2009, 6FC5398-6CP10-1BA0
Manual Machine Plus Turning