Siemens sinumerik 808d Programming And Operating Manual page 122

Cycles
2.4 Drilling cycles
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:
AXN=1
AXN=2
AXN=3
For example, to machine a center hole (in Z) in the G18 plane, you program:
G18
AXN=1
MDEP (minimum drilling depth)
You can define a minimum drilling depth for drill stroke calculations based on a 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 breakage with VARI=0)
You can program the retraction path for chip breaking.
DTD (dwell time at final drilling depth)
The dwell time at final drilling depth can be entered in seconds or revolutions.
DIS1 (programmable limit distance for VARI=1)
The limit distance after re-insertion in the hole can be programmed.
The limit distance is calculated within the cycle as follows:
● Up to a drilling depth of 30 mm, the value is set to 0.6 mm.
● For larger drilling depths, the limit distance is the result of
Programming example: Deep-hole drilling
This program executes the cycle CYCLE83 at the position X0. The first drill hole is drilled
with a dwell time zero and machining type chip breaking. The final drilling depth and the first
drilling depth are entered as absolute values. The drilling axis is the Z axis.
N10 G0 G54 G90 F5 S500 M4
N20 D1 T6 Z50
N30 G17 X0
N40 CYCLE83(3.3, 0, 0, -80, 0, -10, 0, 0, 0,
0, 1, 0)
N50 M2
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First axis of the current plane
Second axis of the current plane
Third axis of the current plane
(RFP + SDIS – current depth) / 50. If this calculated value >7, a limit of 7 mm, maximum,
is applied.
;Specification of technology values
; Approach retraction plane
; Approach drilling position
;Call of cycle, depth parameters
with absolute values
; End of program
Turning Part 2: Programming (Siemens instructions)
Programming and Operating Manual, 05/2012, 6FC5398-5DP10-0BA0