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Chapter 10 Way Straightness Measurements
Assembling, Mounting, and Aligning the Optics on the Target Machine
foot spacers: 50 mm (2 inch), 102 mm (4 inch), and 152 mm (6 inch). These
sizes are actually the distances between the leading and trailing feet of
the foot spacers rather than the overall length of the foot spacers.
When choosing a foot spacer, remember that the smaller the foot spacer,
the longer it will take you to perform the entire measurement process, but
the better your measurement resolution will be.
After you choose a foot spacer, mark the stations on the machine way.
Make sure that the interval between the marks on the way is the same as
the distance between the leading and trailing feet on the chosen
foot spacer.
After you have marked the stations, calculate the combined length of the
stations in millimeters or inches. Write down this length; you will need to
enter it on the Set Up WAY STRAIGHTNESS screen.
The figures in this chapter use a milling machine way as an example.
Although the equipment or machinery you are checking for way
straightness may be different, the procedures described here still apply.
Assembling, Mounting, and Aligning the
Optics on the Target Machine
To assemble, mount, and align the optics on the target machine, follow
these steps:
To assemble the optics, attach the interferometer and reflector to
foot spacers (Figure 9-7).
Mount the optics on the machine way (Figure 10-2).
You may need to make a special holder, similar to a way bearing, that
follows the way and carries the reflector during the measurement. This
also allows you to measure side to side flatness.
To align the optics, follow the instructions in "Aligning the Optics" then
"Aligning the optics if you are not using flatness mirrors" in Chapter 9.
10-4
Measurements Reference Guide
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