Siemens SINUMERIK 840D Programming Manual page 49

03.96
2
Drilling cycles are motion sequences defined
according to DIN 66025 for drilling, boring, tapping,
etc.
They are called in the form of a subroutine with a
defined name and a parameter list.
Five cycles are available for boring. They all follow a
different technological procedure and are therefore
parameterized differently:
Boring cycle
Boring 1 -
Boring 2 -
Boring 3 -
Boring 4 -
Boring 5 -
Drilling cycles can be modal, i.e. they are executed
at the end of each block that contains motion
commands. Other cycles written by the user can
also be called modally (see Section 2.2).
 Siemens AG 2000 All rights reserved.
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
CYCLE85
CYCLE86
CYCLE87
CYCLE88
CYCLE89
Drilling Cycles and Drilling Patterns
2.1 Drilling cycles
Special parameterization features
Different feedrates for boring and
retraction
Oriented spindle stop, definition of retraction
path, retraction in rapid traverse, definition of
spindle direction of rotation
Spindle stop M5 and program stop M0 at
drilling depth, continued machining after NC
Start, retraction in rapid traverse, definition
of spindle direction of rotation
As for CYCLE87 plus dwell time at drilling
depth
Boring and retraction at the same
feedrate
2
2-49