HAMAR LASER STEALTH Series, General Training Manual

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47
Measuring Sawmills
The critical alignments for a sawmill ensure that the log carriage is traveling straight and flat, is
perpendicular to the blade, where the mill is cutting specific board lengths, and parallel to the blade,
where the mill is cutting/shaping board lumber.
The L-733/L-743 Triple Scan Laser systems offer the fastest and most accurate way to align sawmills on
the market today. They are easy to learn and quick to set up. Here is a rough procedure outlining how it’s
used.
Checking Log Carriage Straightness and
Flatness/Level
1. The L-743 or L-733 is positioned at the end of the mill and
is leveled, using the built-in level vials.
2.
Two reference points are needed to align the laser to the
machine centerline. Typically, a fixture is made to hold two A-1519-2.4ZB Targets to pick up the
tight wire centerline mounting points. The fixturing positions the center of the targets to within .001
in. (0.025 mm) of the centerline jig location.
3. Each A-1519-2.4ZB is placed at end point of the machine
and the L-733/L-743 is placed near one end of the mill. Then
using the yaw adjustment on the L-743/L-733 laser base, the
laser is adjusted so the targets in the far position and the near
positions both read the same value. This means the laser is
parallel to the reference points.
Figure 19 – L-743 Triple Scan’s three mutually
perpendicular laser planes
Figure 20 -- Two A-1519-2.4ZB Targets mounted vertically
and horizontally on a machine tool spindle