Siemens SINUMERIK 840D Programming Manual page 76

2
Drilling Cycles and Drilling Patterns
2.1 Drilling cycles
Programming example
Deep hole drilling
This program executes the cycle CYCLE83 at positions
X80 Y120 and X80 Y60 in the XY plane. The first 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. In the second cycle call, a
dwell time of 1 sec is programmed. Machining type
swarf removal is selected, the final drilling depth is
relative to the reference plane. The drilling axis in both
cases is the Z axis.
The drilling stroke is calculated on the basis of a
degression factor and must not become shorter than
the minimum drilling depth of 8mm.
DEF REAL RTP=155, RFP=150, SDIS=1,
DP=5, DPR=145, FDEP=100, FDPR=50,
DAM=20, DTB=1, FRF=1, VARI=0,
_VRT=0.8, _MDEP=10, _DIS1=0.4
N10 G0 G17 G90 F50 S500 M4
N20 D1 T42 Z155
N30 X80 Y120
N40 CYCLE83 (RTP, RFP, SDIS, DP, ,->
-> FDEP, , DAM, , , FRF, VARI, , , _VRT)
N50 X80 Y60
N55 DAM=-0.6 FRF=0.5 VARI=1
N60 CYCLE83 (RTP, RFP, SDIS, , DPR, , ->
-> FDPR, DAM, DTB, , FRF, VARI, , _MDEP,
-> , , _DIS1)
N70 M30
-> Must be programmed in a single block
2-76
Y
A
B
80
Definition of parameters
Specification of technology values
Traverse to retraction plane
Traverse to first drilling position
Cycle call, depth parameter with absolute
values
Traverse to next drilling position
Assignment of value
Cycle call with relative data for final
drilling depth and 1st final drilling depth;
the safety distance is 1mm; the feedrate
is 0.5
End of program
SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
2
03.96
04.00
Y
A - B
X
Z
5
150
© Siemens AG, 2002. All rights reserved