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Chapter 6 Squareness Measurements in a Horizontal Plane
Mounting and Aligning the Reflector for the First Axis Measurement
If you cannot get the two dots to strike the front of the reflector, remove
the interferometer and move the reflector back and forth or side to side
until the single beam from the optical square overlays the midpoint
notches on the reflector.
4
If necessary, reattach the interferometer to the spindle.
5
Rotate the reflector left or right so that it is perpendicular to the optical
square.
6
Secure the reflector to the machine using a clamp or similar device so that
the assembly remains perpendicular to the beam.
When using a clamp to secure the reflector, cover as much of the
assembly's base as possible with the clamp so the attachment is secure.
Your goal in the rest of this procedure is to center the two return beams on
the laser head's upper port.
7
Turn the interferometer's bezel so that the scribed line is parallel to the
optical square's slot.
Two overlapping dots should now appear on the side of the optical square
facing the reflector.
If you cannot see the dots, adjust the tilt of the reflector using the two
micrometer knobs on the back of the reflector mount until you see the dots
on the optical square.
8
Turn the interferometer's bezel until the two dots are parallel to the slot
in the optical square.
9
Adjust the tilt of the reflector (using the two micrometer knobs on the
back of the reflector) mount until the dots:
•
appear on the surface of the optical square (Figure 6-8), and
•
are at an equal distance from the midpoint notches.
6-18
Measurements Reference Guide
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