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Model 5528A
Straightness
Measurements (Along
A Horizontal
Axis)
INSTALLATION AND ALIGNMENT OF OPTICS
Important Considerations
1.
The
Straightness
Interferometer
mUSt
be located between
the
laser
Head and
the
Straight·
ness
Reflector
in the
la
scr beam.
2.
The Interferometer
mll~t
be
mounted where
th
e
tool
mounts.
The
Reflector must
be
mounted
where
the workpiece mounts.
(O
n some
machines it
isn
'
t
possiblc
to
satisfy both " 1" and"2".
l
n
these cases,
you will
need
a
Straightness
Rctroreflector.
(See Section
11
.))
3.
Vibrations and
loose connections
must
be minimized
by
proper mounting. Avoid
long
extensions. Make sure
that
all
supports
are
comp
letely
stationary.
A
spindle,
for
example,
must
be
secured
by a brake so
it
won',
rotate.
(If
a brake
isn
't
available try
using
a
hose
clamp
or
a
wedge.
I
4.
The laser
beam must be returned
to the top
port on
the laser Head's turret
,
not
to
the bollom
(return
)
port.
5.
The
Optics must be aligned
to the laser beam
well enough
to keep
the
Beam Strength
indicator
in
the green
region along the
entire opticS' path.
6.
The
Optics
must
be aligned
to the
laser beam well enough to eliminate "slope" if
the HP
Dimensiona
l
Metrology Analysis
Sys tem
isn't
used.
7.
If
either
Distance
or Angular OptiCS
have
previously
been installed,
the
Straightness Oplics
can be installed
by
making only
minor
changes
10
the
mounting
hardware.
8.
The laser
Il
ead's
turret ring should be
set
to
"OT
HER" during
in~
t
a
ll
aljon,
to
tilke advantilge
of
the strongest
possible beam, which this
setting
provid~s.
Description
1.
You will position the laser
Head
along
the
axis
you
want to
measure.
2.
You will
posi
tion the
Interferometer
in the
laser
beam.
3.
Vou will position
the Reflector
in
the
laser beam and dose
to the Interferometer.
4.
You
will align
the la
ser
Head
to track the Optic's progression along
the
travel path. You will
do this by
-
•
Reviewing
the "CUNSICHT" alignment
method in
Section
15
of
this
Uscr'sCuidc.
•
Keeping
the
beam
within
the hole
on
the Interferometer
target,
to
maintain
the
beam's near-end-of
travel posi tion
,
and -
•
Keeping
a two·dot pattern in
line
with
the
junction of the Straightness
Reflector
's
mirrors,
and
symmetrica
l
abou
t
its
~Iolted
opening,
to match the
Optic's
travel.
5.
Finally, you
will
check your
alignment
to
insu
re Ihat
"
Importilnt Considerations" number "5"
and number
"6"
have been me\.
10-5
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