30
Adjusting the Laser Angle
1.
INvert the laser with the target in the NORMal position.
Set the laser in the Inverted (cable up) position, with the target in the NORMal (cable down) position and wait for the
readings to stabilize (approx. 10 seconds). Write down the angular INverted reading.
2. Rotate the laser to the NORMal position.
Rotate the laser to the NORMal (cable down) position, with the target still in the NORMal position, and wait for the
readings to stabilize (approx. 10 seconds). Write down the angular NORMal reading.
3.
Calculate set points for each axis.
Calculate the set points for each axis--vertical and horizontal angle--with the following formula:
(NORMal r INverted reading) / 2 = Set Point
If, for example, the following vertical NORMIN readings are taken:
NORMal = .0021, INverted = -.0017, the equation would read:
[(.0021) + (-.0017)] / 2 = (.0004) / 2 =
.0002
In this case, .0002 would be the vertical angular set point. Use the two vertical angular readings to calculate the set
point for vertical angle. The horizontal angle set points would be calculated in the same way.
4.
Adjust vertical and horizontal angle to Set Points.
Adjust the angle using the angular controls until the readout displays the calculated set points.
Checking Results
To confirm the results, invert the laser. The display should show the
same reading, same sign
(+ or -) as it did in the
normal position, to within .0002 in. in the calibration fixture (results may be slightly less accurate in a spindle due to
bearing runout). If the results are not close enough, recalculate the set points and readjust the laser unit.
The user should get as close to a zero difference on the readout as possible; however, in some fixtures or applications this
may not be practical. If there is any doubt about consistency of results, check the repeatability of the fixture using the
REPEAT function of the Read8 software. This will establish a tolerance within which the user can work.
Summary of Contents for L-702
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Page 7: ...4 L 702 L 702SP Laser Dimensions...
