Siemens SINUMERIK 840D Programming Manual page 242

3 3
Milling Cycles 12.97
11.02
3.16 Swiveling – CYCLE800 (SW 6.2 and higher)
Kinematic type $TC_CARR23[n]
• Swivel head (type T)
• Swivel table (type P)
• Swivel head + swivel table (type M).
Retraction/Retraction position
$TC_CARR38[n] X; $TC_CARR39[n] Y; $TC_CARR40[n] Z
n à No. of swivel data record
The start-up engineer determines whether the options 'Retract
axis Z' and 'Retract axes Z,X,Y' are possible in the input menu
for the swivel cycle.
The mode of retraction can be modified in user cycle
TOOLCARR.spf (marker _M41, _M40) if necessary. If user
cycle TOOLCARR.spf is not modified, the retraction position is
approached as an absolute machine position.
Please note the following when moving the tool axes:
Retract the tool axis in such a way that the tool and workpiece
cannot collide when swiveled.
Offset rotary axis vectors (machine kinematics)
$TC_CARR1[n] ... $TC_CARR20[n]
The positions in the kinematic chain are measured by the
machine manufacturer; they are always relevant with
respect to a swivel head table (swivel data record). Offset
vectors I1 to I4 refer to the non-swiveled state of the
rotary axes.
The machine kinematics used need not be fully
implemented from the control viewpoint. But then be aware
that the traversing range in the swivel planes may be
restricted. If machine kinematics are to be implemented
with just one rotary axis, this must always be declared as
the 1st rotary axis.
Manually adjustable rotary axes with or without measuring
systems are possible and can be used with "plain
machines".
© Siemens AG, 2002. All rights reserved
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SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition