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17
Verifying Adjustment Accuracy
Refer also to Figure 18.
Test cuts can be used to determine whether or not
you have adjusted the blade accurately. Use 2 inch
round bar stock to perform these test cuts, as
follows:
1. With the bar stock securely clamped in the vise,
make a cut through the bar stock.
2. Mark the top of the bar stock.
3. Move the bar stock about 1/4 inch past the
blade so you can begin a second cut.
4. Rotate the bar stock 180 degrees so the mark
you made is now at the bottom of the cut.
5. Make a cut through the bar stock.
6. Use a micrometer to measure the thickness
variation between the top and bottom of the disk
you have cut from the bar stock.
The saw blade can be considered correctly adjusted
when the variation measured is no more than 0.012
inch across the face of the disk. If you do not have a
piece of 2-inch bar stock available for a test cut, use
a larger diameter test workpiece rather than a
smaller one. The maximum thickness variation on
any test piece should be no more than 0.003 inch,
per side, per inch of stock diameter.
Switch Adjustment
Disconnect the cut-off saw from
its electrical power source.
Referring to Figure 19:
Loosen the jam nut and set the adjustment screw so
that the limit switch will actuate to the off position
when the saw has cut through the workpiece.
Counterbalance Spring Tension
Disconnect the cut-off saw from
its electrical power source.
The counterbalance spring is located on the rear of
the saw table (refer to Figure 20). The counter-
balance spring is used to adjust the amount of down
force the saw arm puts on the workpiece when the
hydraulic control cylinder is fully open.
If adjustment is needed:
1. Raise the saw arm to its full upright position and
lock it in position.
2. Set the spring tension by adjusting the nut until
1-1/4 to 1-1/2 inches of are exposed on the right
side of the eyebolt mount.
The saw can now be returned to service.
Rod
1. Clamp vise and mart top of bar stock here
2. Cut of a slice of
3. Rotate stock in vise
the bar stock
so mark is at bottom
5. Measure
here ...
6. ... and measure
here
4. Cut off a new
slice from the
stock
7. Difference between
measurements at edges
of disc should be less than
0.003 inches per inch per
side of stock diameter
Figure 18
Figure 19
Figure 20