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BOSCH
Flexible
Automation
Description Stage 4 Chapter 1
CC lOOM
User
Manual
Coordinate rotation
G37
X_
Y
_Z_A_
Definition:
A
programmed
contour
is
rotated
by
8
specific
angle
about
a
defined
canter
of
rotation.
The angle and canter of rotation must be defined in
th~
part program.
Programminglcommand
syntax:
Coordinate
rotation
is
programmed
with
function
G37,
with
the
coordinate
specification
for
the
canter of rotation
(X,
Y,
Z) and the rotation angle (A). Other addresses are not pennitted.
Example:
G37
X_
Y
_A_
The
canter
of
rotation
is
defined
with
two
coordinates.
Selection
of
the
axes
is
dependent
upon
the
active
working
plane:
-
if
G17
is
active,
axis
coordinates
X
and
Y
are
selected
-
if
G18
is
active,
axis
coordinates
Z and X
are
selected
-
if
G19
is
active,
axis
coordinates
Y and Z
are
selected.
The
axis
entries
are
absolute
values,
referred
to
the
active
program
datum.
G37 acts modelly.
G37.
programmed
without
axis
statements,
resets
active
coordinate
rotation.
Input range:
The rotation angle (A)
is
programmed with a value between
-360'
and
360'.
Negative
angle
entries
define
the
coordinate
rotation
clockwise;
a positive
sign
results
in
coordinate
rotation
counterclockwise.
Interaction
with
other
functions:
...
Change of the group operating mode from AUTOMATIC
to
MACHINE or MACHINE
to
AUTOMATIC resets G37.
...
G37 is not pennitted in manual mode (group operating mode MACHINE).
If
a cycle
in
which
G37
is
programmed
is
called
in
manual
mode,
this
block
is
executed.
...
The following functions reset G37: RESET, changing the working plane (G17, G18, G19),
switchover
to
polar
coordinates
(G20),
G37
programmed
separately,
activate
reference
point approach cycle (G74), G92 programmed separately (reset
to
original machine coordina-
tes).
G37
is
not
active
after
power-up
of
the
control.
la"
Coordinate
rotation
may
not
be
programmed
if
radius
compensation
(G41.
G42)
is
active.
G41/G42
with
active
G37
are
permitted.
...
The
minimum
and
maximum
values
of
the
work
area
limits
(G25,
G26)
may
not
be
modified
when
G37
is
active.
1-15
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