Siemens SINUMERIK 840D Programming Manual page 88

Drilling Cycles and Drilling Patterns
2
2.1 Drilling cycles
Description of parameters
See Section 2.1.2. (Drilling, Centering – CYCLE81)
for a description of parameters RTP, RFP, SDIS,
DP, DPR
DTB (dwell time)
Parameter DTB is the dwell time at the final drilling
depth (chip breaking) in seconds.
Programming example
Fifth boring pass
Boring cycle CYCLE89 is called at position X80 Y90
in the XY plane with a safety clearance of 5 mm and
the final drilling depth specified as an absolute value.
The boring axis is the Z axis.
DEF REAL RFP, RTP, DP, DTB
RFP=102 RTP=107 DP=72 DTB=3
N10 G90 G17 F100 S450 M4
N20 G0 X80 Y90 Z107
N30 CYCLE89 (RTP, RFP, 5, DP, , DTB)
N40 M30
2-88
Z
Y
80
Definition of parameters
Value assignments
Specification of technology values
Traverse to drilling position
Cycle call
End of program
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
03.96
2
G0
G1
G4
RTP
RFP+SDIS
RFP
X
DP=RFP-DPR
Y A - B
A
B
X
72
102
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Z