19
NOTE: Never start a cut with blade
contacting workpiece.
2. Place workpiece in vise and tighten vise.
The workpiece should be fitted directly
between the jaws without adding other
objects.
When workpiece to be cut is a profiled
section, flat piece or special shape, refer to
examples in Figure 29 for proper clamping
positions. The top row shows acceptable
clamping positions; the bottom row shows
un
acceptable positions.
If thickness of profiled section is very thin, a
piece which duplicates the profile should be
fitted inside the workpiece itself, to prevent
workpiece being crushed between the jaws.
Figure 29
Never hold a workpiece by
hand when cutting it – the workpiece should
be firmly secured in the vise. Do not reach
into the cutting area during cutting
operations.
3. Position work stop if needed.
4. Position blade guides as close to workpiece
as possible.
5. Move speed setting lever to desired position.
Do not move speed setting lever during a
cutting operation.
6. Set a suitable feed rate for that operation on
the hydraulic cylinder dial.
7. Toggle ON switch to begin blade rotation.
Allow blade to reach full speed before
beginning cut.
8. Turn on coolant flow. Adjust flow valves as
needed.
9. Open valve on hydraulic cylinder to allow
bow to descend in a gradual and controlled
manner.
10. The machine will shut off at the completion
of the cut. Turn off coolant flow and remove
workpiece.
11. Return bow to raised position for next cut.
11.4
Evaluating cutting efficiency
Is the blade cutting efficiently? The best way to
determine this is to observe the chips formed by
the cut.
If chip formation is powdery, then the feed rate is
much too light, or the blade is dull.
If chips are curled, but colored — that is, either
blue or straw-colored from heat generated
during the cut — then the feed rate is too high.
If chips are slightly curled and are not colored by
heat, the blade is sufficiently sharp and is cutting
at its most efficient rate.
12.0
Maintenance
Before doing maintenance
on the machine, disconnect it from the
electrical supply by pulling out the plug or
switching off the main switch! Failure to
comply may cause serious injury.
Keep all surfaces clean and free of rust, slag,
chips, and coolant build-up.
Clear metal particles with a small paint brush or
parts cleaning brush.
Clean filter screen.
Do not use compressed air, as it may force
chips into the guide bearings and other critical
areas of the saw.
Wipe saw down with a clean, dry cloth, and oil
all unpainted surfaces with light machine oil.
Keep blade guides clean and free of metal
particles.
Check guide bearings frequently to make sure
that they are properly adjusted and turning
freely.
Grease the vise lead screw (Figure 30) as
needed, with a general purpose grease.
Figure 30
