Siemens sinumerik 840d Programming Manual page 15

04.00
0
Structure of the descriptions
All cycles and programming options have been
described – where appropriate and possible – according
to the same internal structure. The organization into
different information levels allows you to find the
information you need quickly.
1. At a glance
If you want to look up a seldom used command
or the meaning of a parameter, you can see at a
glance how to program the function together with
an explanation of the commands and
parameters.
This information is always presented at the start of the
page.
Note:
To keep this documentation as compact as possible,
it is not always possible to list all the types of
representation available in the programming
language for the individual commands and
parameters. The commands are therefore always
programmed in the context most frequently used in
the workshop.
 Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
Structure of the manual
Drilling cycles and drilling patterns
2
2.1 Drilling cycles
2.1.2 Drilling, centering – CYCLE81
Programming
CYCLE81 (RTP, RFP, SDIS, DP)
RTP
real Retraction plane (absolute)
RFP real Reference plane (absolute)
SDIS real Safety clearance (enter without sign)
DP
real Final drilling depth (absolute)
DPR real Final drilling depth relative to reference plane (enter without sign)
Function
Z
The tool drills at the programmed spindle speed and
feedrate to the programmed final drilling depth.
Operating sequence
Position reached before the beginning of the
cycle:
The drilling position is the position in the two axes of
the selected plane.
The cycle implements the following motion
sequence:
• Approach of the reference plane brought forward
by the safety clearance with G0
• Travel to the final drilling depth at the feedrate
programmed in the calling program (G1)
• Retraction to retraction plane with G0
2-36
SINUMERIK 840D/810D/FM-NC Programming Guide, Cycles (PGZ) - 08.97 Edition.
Preface
0
03.96
2
X
 Siemens AG 1997 All rights reserved.
0-15