28
Appendix B – Qualifying the Laser – L-700 Laser
Lasers must be qualified; that is, the beam must be centered and made parallel to the axis of rotation. This can be either
the axis of the laser mounting stud or of a spindle in which the laser is mounted.
All Hamar lasers are factory qualified to the mounting stud axis. Sometimes, due to slight mounting errors, it is desirable
to adjust a laser so that it is aligned to the spindle axis of rotation rather than to its own. A laser that has been qualified for
a particular application may need to be re-adjusted for another. The following procedure is used to qualify the L-702 laser
to a desired axis.
The NORMIN Method
The NORMIN method is a way of canceling mounting errors. The word is a contraction of “NORMal-INverted,” which
briefly describes the method.
To take NORMIN readings, the laser and target fixtures are set in the NORMal position (cable down) and the readings
recorded. Then the target fixture is rotated 180 degrees to the INverted (cable up) position and a second set of readings
obtained. The two sets of readings cancel out both laser and target center and angular mounting errors and provide a very
accurate result.
For a detailed description of the NORMIN method, see Appendix A –
The NORMIN Method
, beginning on Page 26.
Figure 21—Taking NORMIN Readings
Warning!!
This procedure is for adjusting the laser only. While the software allows the user to adjust the target,
targets are factory-qualified and need no field adjustments. Attempting to do so could potentially
damage the target
NORMIN Reading
Laser Normal,
Target Normal
NORMIN Reading
Laser Inverted,
Target Normal
Summary of Contents for L-702
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