Chapter 4 Angular Measurements
Mounting and Aligning the Optics on the Target Machine
Measurements Reference Guide 4-7
This helps prevent the moveable part from hitting the laser head during
the alignment and measurement procedures.
4 Determine how to position the optics. See Figures 4-3 and 4-4 for sample
setups, and use the following guidelines:
• Figures 4-3 and 4-4 show optic setups and positioning for a machine
with a table top as the moving part. If the spindle is the moving part,
the angular reflector must be mounted on it and the angular
interferometer must be mounted on the table between the laser head
and the angular reflector.
• Mount one optic where the tool mounts. Mount the other optic where
the work piece mounts. Make sure the interferometer is between the
reflector and the laser head.
• If you want to measure along an axis perpendicular to the laser beam
as it leaves the laser head, mount the interferometer on a part of the
machine that remains stationary.
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