Table of Contents
Advertisement
NOTE
1
2
3
4
Chapter 8 Parallelism Measurements
Positioning the Laser Head and Target Machine
Spindle parallelism measurements also consist of two measurements;
however, both measurements are along the same axis. In one
measurement, the optics are oriented to determine how much the spindle
is out of vertical alignment with the tool travel path. In the second
measurement, the optics are aligned to determine how much the spindle is
out of horizontal alignment with the tool travel path. The combination of
the two out-of-alignment values is the total out-of-parallelism value.
Before you begin to assemble and mount optics for either type of
parallelism measurement, you must position the laser head and move the
moveable part of the target machine to its start position. Follow these
steps:
This chapter uses a milling-type machine with a spindle as an example for
making coplanar parallelism measurements and a lathe as an example for
making spindle parallelism measurements. Although your machine may
be different, the general procedures described here still apply.
Position the laser head along the axis most suitable for the measurement
you want to make (Figure 8-4 or 8-5).
Move the moveable part of the machine to its start position.
Adjust the laser head to the approximate height at which you will mount
the optics.
Determine how to position the optics. See Figures 8-4, 8-5, and 8-6 for
illustrations of optics setups, and use the following guidelines:
•
Mount the interferometer or the combined
retroreflector/interferometer assembly where the tool mounts.
•
Mount the reflector where the work piece mounts.
Measurements Reference Guide
8-7
Advertisement
Table of Contents
