Siemens sinumerik 840d Programming Manual page 16

Preface
0
Structure of the manual
2. Detailed explanations
The theory part contains detailed information on the
following:
What is the purpose of the command?
What is the effect of the command?
What is the sequence of command?
What effect do the parameters have?
What else has to be taken into account?
The theory parts are suitable primarily as a guide for
NC beginners. Work through the manual carefully at
least once to gain an overview of the performance
scope and capabilities of your SINUMERIK control.
3. From theory to practice
The programming example shows you how to apply
the commands in the program.
You will find an application example for practically all
the commands after the theory part.
0-16
03.96
2
Explanation of parameters
RFP and RTP
Generally, the reference plane (RFP) and the
retraction plane (RTP) have different values. In the
cycle it is assumed that the retraction plane lies in
front of the reference plane. The distance between
the retraction plane and the final drilling depth is
therefore greater than the distance between the
reference plane and the final drilling depth.
SDIS
The safety clearance (SDIS) refers to the reference
plane. which is brought forward by the safety
clearance. The direction in which the safety
clearance is active is automatically determined by
the cycle.
DP and DPR
The drilling depth can be defined either absolute
(DP) or relative (DPR) to the reference plane.
If it is entered as an absolute value, the value is
traversed directly in the cycle.
Additional notes
If a value is entered both for the DP and the DPR,
the final drilling depth is derived from the DPR. If the
DPR deviates from the absolute depth programmed
via the DP, the message "Depth: Corresponds to
value for relative depth" is output in the dialog line.
 Siemens AG 1997 All rights reserved.
SINUMERIK 840D/810D/FM-NC Programming Guide, Cycles (PGZ) - 08.97 Edition.
2 Drilling cycles and drilling patterns
2.1 Drilling cycles
If the values for the reference plane and the
retraction plane are identical, a relative depth must
not be programmed. The error message
61101 "Reference plane incorrectly defined" is
output and the cycle is not executed. This error
message is also output if the retraction plane lies
behind the reference plane, i.e. the distance to the
final drilling depth is smaller.
Programming example
Drilling_centering
You can use this program to make 3 holes using the
drilling cycle CYCLE81, whereby this cycle is called
with different parameter settings. The drilling axis is
always the Z axis.
N10 G0 G90 F200 S300 M3
N20 D3 T3 Z110
N30 X40 Y120
N40 CYCLE81 (110, 100, 2, 35)
N50 Y30
N60 CYCLE81 (110, 102, , 35)
N70 G0 G90 F180 S300 M03
N80 X90
N90 CYCLE81 (110, 100, 2, , 65)
N100 M30
2-38
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
04.00
0
Drilling cycles and drilling patterns
2
2.1 Drilling cycles
Z
G1
G0
RTP
RFP+SDIS
RFP
X
DP=RFP-DPR
2-37
08.97 03.96 2
Y Y
A - B
A
120
30
0
X Z
B
40 90
35 100 108
Specification of the technology values
Traverse to retraction plane
Traverse to first drilling position
Cycle call with absolute final drilling
depth, safety clearance and incomplete
parameter list
Traverse to next drilling position
Cycle call without safety clearance
Specification of the technology values
Traverse to next position
Cycle call with relative final drilling depth
and safety clearance
End of program
 Siemens AG 1997 All rights reserved.
SINUMERIK 840D/810D/FM-NC Programming Guide, Cycles (PGZ) - 08.97 Edition.
 Siemens AG 2000. All rights reserved