Chapter 4 Angular Measurements
Angular Position Measurements
Measurements Reference Guide 4-37
Mounting and aligning the precision index table on the
target machine
This section explains how to correctly mount and align the precision index
table on the target machine before making an angular position (Angle)
measurement.
Mounting and aligning on a rotary table
NOTE We expect that most installations will require use of the adapter plate. If
your rotary table already has mounting holes that allow proper centering
of the precision index table, you do not need to use the adapter plate.
1 Fasten the adapter plate to your machine’s rotary table. (See Figure 4-20.)
2 Center the adapter plate on the rotary table’s rotation axis.
3 Remove the locking ring at the bottom of the precision index table. (See
Figure 4-22.)
4 Separate the precision index table’s top and base and inspect their Hirth
coupling teeth for cleanliness. If necessary, clean the teeth. A procedure
for cleaning the Hirth coupling teeth is given in the “Maintenance” section
of this chapter.
5 Rejoin the precision index table’s top and base and use the locking loops to
hold them together. (See Figure 4-22.)
6 Fasten the precision index table to the adapter plate. (See Figure 4-20.)
7 Center the precision index table within 25.4 μm (0.001 inch) on your
machine’s rotary table rotation axis.
8 Go to “Choosing the moveable optic” below.
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