Hitachi C 12LSH Handling Instructions Manual page 68

English
(1) Light up the laser marker and make a groove of
about 5 mm deep on the workpiece that is
about 20 mm in height and 150 mm in width.
Hold the grooved workpiece by vise as it is and
do not move it. For grooving work, refer to
"13. Groove cutting procedures" on page 80.
(2) Then, turn the adjuster and shift the laser line.
(If you turn the adjuster clockwise, the laser line
will shift to the right and if you turn it
counterclockwise, the laser line will shift to the
left.) When you work with the ink line aligned
with the left side of the saw blade, align the laser
line with the left end of the groove. (Fig. 21)
When you align it with the right side of the saw
blade, align the laser line with the right side of
the groove.
(3) After adjusting the position of the laser line, draw
a right-angle ink line on the workpiece and align
the ink line with the laser line. When aligning the
ink line, slide the workpiece little by little and secure it
by vise at a position where the laser line overlaps with
the ink line. Work on the grooving again and check
the position of the laser line. If you wish to change the
laser line's position, make adjustments again following
the steps from (1) to (3).
NOTE
Check and make sure on a periodic basis if the
position of the laser line is in order. As regards the
checking method, draw a right-angle ink line on the workpiece with the height of about
20 mm and the width of 150 mm, and check that the laser line is in line with the ink line
[The deviation between the ink line and the laser line should be less than the ink line width
(0.5 mm)]. (Fig. 22)
Workpiece
Marking
(pre-marked)
Vise assembly
Laser line
68
Saw blade
Cutting width
Fig. 20
Move
Groove Adjuster
Fig. 21
Laser line
Marking
(pre-marked)
Fig. 22
Turn