Chapter 4 Angular Measurements
Angular Position Measurements
4-60 Measurements Reference Guide
If your measurement distance is greater than 350 mm (14 inches),
continue with the next section, “Aligning the Laser Beam to the Machine’s
Travel Path for Long-Range Measurements,” in Chapter 2.
13 After you have finished performing the appropriate alignment procedure
described above, continue at “Checking your installation” below.
Checking your installation
This procedure assumes that you have:
1. created an appropriate program to control the machine for the
measurement, and
2. installed the precision index table and measurement optics for an
angular position measurement as instructed earlier in this chapter
Checking your installation consists of:
a. setting the machine’s relative zero point for your setup,
b. performing final alignment of the optics and laser beam, and
c. checking integrity of your measurement setup
To set the machine’s relative zero point for your
measurement
This procedure assumes that physical setup has been completed, and that
you have not yet used the machine to disengage the clutch. That is, the
measurement setup is in its “neutral” position.
If you have already used the machine to disengage the clutch, return the
clutch to its neutral position. One way to do this is to loosen the
connection between the clutch control shaft and the part of the machine
that is providing the lifting action for the measurement fixture and
precision index table top. Then tighten the connection again.
1 Starting from the initial conditions described above, move the clutch
controlling mechanism 2 mm in the direction that separates the top and
base of the precision index table.
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