Structure Of Descriptions; Drilling Cycles And - Siemens SINUMERIK 840D Programming Manual

04.00
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Structure of descriptions

All cycles and program functions were laid out
according to the same structure, as far as possible
and practicable. The various levels of information
have been structured so that you can find the
information you are looking for quickly.
1. The function at a glance
If you need to look up a cycle that is rarely
used or the meaning of a parameter, you will
see at a glance how the function is programmed
together with an explanation of the cycles and
parameters.
This information always appears at the beginning of
the page.
Note:
In order to keep the documentation succinct we have
not provided all the methods or representation of the
individual cycles and parameters that are possible in
the programming language. Cycles have been
programmed in the form in which they most
frequently arise on the shop floor.
 Siemens AG 2000 All rights reserved.
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Cycles (PGZ) - 04.00 Edition
Structure of the manual
Drilling cycles and drilling patterns
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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
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SINUMERIK 840D/810D/FM-NC Programming Guide, Cycles (PGZ) - 08.97 Edition.
Preface
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03.96
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 Siemens AG 1997 All rights reserved.
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