Siemens SINUMERIK 808D ADVANCED Programming And Operating Manual page 135

SST (speed)
Parameter SST contains the spindle speed for the tapping block with G331.
SST1 (retraction speed)
The speed for retraction from the tapped hole is programmed under SST1.
If this parameter is assigned the value zero, retraction is carried out at the speed programmed under SST.
AXN (tool axis)
By programming the drilling axis via AXN, it is possible to omit the switchover from plane G18 to G17 when the deep-hole
drilling cycle is used on turning machines.
The identifiers have the following meanings:
Plane Designation
X/Y G17
Z/X G18
Y/Z G19
If Y-axis is present.
1)
For example, to machine a center hole (in Z) in the G17 plane, you can program:
G17
AXN=3
Deep-hole tapping: VARI, DAM, VRT
With the VARI parameter, it is possible to distinguish between simple tapping (VARI = 0) and deep-hole tapping (VARI ≠ 0).
In conjunction with deep-hole tapping, it is possible to choose between chip breaking (retraction by variable distance from
current drilling depth, parameter VRT, VARI = 1) and chip removal (withdrawal from reference plane VARI = 2). These
functions work analogously to the normal deep-hole drilling cycle CYCLE83.
The incremental drilling depth for one pass is specified via parameter DAM. The cycle internally calculates the intermediate
depth as follows:
● The programmed incremental drilling depth is executed in each step until the rest up to the final drilling depth is less than
(<) 2 x DAM
● The remaining drilling depth is halved and executed in two steps. Thus, the minimum drilling depth is not smaller than
DAM / 2.
Note
The direction of rotation when tapping in the cycle is always reversed automatically.
Programming example 1: Rigid tapping
A thread is tapped without compensating chuck at position X30 Y35 in the XY plane; the tapping axis is the Z axis. No dwell
time is programmed; the depth is programmed as a relative value. The parameters for the direction of rotation and for the
lead must be assigned values. A metric thread M5 is tapped.
Programming and Operating Manual (Turning)
6FC5398-5DP10-0BA2, 06/2015
Infeed direction
AXN=1: 1st axis of the current plane is X
AXN=2: 2nd axis of the current plane is Y
AXN=3: 3rd axis of the current plane is Z
AXN=1: 1st axis of the current plane is Z
AXN=2: 2nd axis of the current plane is X
AXN=3: 3rd axis of the current plane is Y
AXN=1: 1st axis of the current plane is Y
AXN=2: 2nd axis of the current plane is Z
AXN=3: 3rd axis of the current plane is X
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