Siemens SINUMERIK 840D Programming Manual page 75

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_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.
Meaning:
_AXN=1 1st axis of the current plane
_AXN=2 2nd axis of the current plane
_AXN=3 3rd axis of the current plane
For example, to machine a center drilling (in Z) in
plane G18, you program:
G18
_AXN=1
_MDEP (minimum drilling depth)
You can define a minimum drilling depth for drill stroke
calculations based on degression factor. If the
calculated drilling stroke becomes shorter than the
minimum drilling depth, the remaining depth is
machined in strokes equaling the length of the minimum
drilling depth.
_VRT (variable retraction value for
chip breaking with VARI=0)
You can program the retraction path for chip
breaking in seconds or revolutions.
Value > 0 retraction value
Value = 0 retraction value 1mm
_DTD (dwell time at final drilling depth)
The dwell time at final drilling depth can be entered in
seconds or revolutions.
Value > 0 in seconds
Value < 0 in revolutions
Value = 0 dwell time as programmed in DTB
_DIS1 (programmable limit distance when
VARI=1)
The limit distance after re-insertion in the hole can
be programmed.
Value > 0 position at programmed value
Value = 0 automatic calculation
© Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
Drilling Cycles and Drilling Patterns
2.1 Drilling cycles
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