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2
3
4
5
NOTE
Chapter 5 Straightness Measurements
Positioning the Laser Head and Target Machine
If the machine's table moves, move it as close as possible to the laser head.
If the machine's spindle moves, move it as far as possible from the laser
head.
Steps 2 and 3 ensure that any movement of the machine's moveable part
will move the optics apart, not toward each other. This decreases the
possibility of damaging them.
Adjust the laser head to the approximate height at which you will mount
the optics.
Determine how to position the optics. See Figures 5-3, 5-4, and 5-5 for
sample setups, and use the following guidelines:
•
Mount the interferometer or the combined
retroreflector/interferometer where the tool mounts.
•
Mount the reflector where the work piece mounts.
This chapter uses a machine with a spindle as an example for making
straightness measurements. Although your machine may be different, the
general procedures described here still apply.
Your measurement will determine how straight a machine will cut or
measure a work piece. The measurement corresponds to a straightedge
and dial indicator measurement.
You are now ready to assemble, mount, and align the optics.
To make a straightness measurement along the vertical Z-axis, go directly
to "Making Vertical Axis Straightness Measurements" later in this
chapter.
To make a straightness measurement along the X-axis or Y-axis, continue
with the next section, "Mounting and Aligning Optics for X-Axis or Y-Axis
Measurements."
Measurements Reference Guide
5-9
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