Chapter 4 Angular Measurements
Angular Position Measurements
4-62 Measurements Reference Guide
Controlling the machine during the measurement
Because of the variety of controllers, it is not possible to present specific
instructions for any particular one here. Apply the information presented
here to your measurement situation.
As described earlier in this manual chapter, making a measurement
consists of these activities:
1. Disengaging the precision index table top from its base.
For the hardware described in this manual chapter, disengagement
requires 2 mm (0.08 inch) of movement from the “neutral” closed
position. (See Figure 4-31.)
2. Rotating the precision index table’s base with respect to its top.
Although the optic mounted on the table is considered the “moveable”
optic, its movement is minimal, compared to some other applications.
3. Engaging the precision index table top and base, and applying a
clamping force to disengage the clutch and ensure good seating of the
two parts of the table.
For the hardware described in this chapter, engagement requires
moving the clutch control shaft 1.0 mm (0.04 inch) past the “neutral”
closed position. (See Figure 4-31.)
4. Commanding the Agilent 5530 calibrator to record the measurement
data.
Manually stepping through the machine control program
Step through your machine control program manually before you run it
automatically. While you are doing this, be sure to check the physical
integrity of your setup, to be sure the program has not introduced any
problems you did not encounter during your earlier manual check. Fix any
problem that you detect.
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