Frontier BG1000 Manual Del Operador página 20

OPERATING INSTRUCTIONS (Continued)
Top Face Grinding
REFER TO THE "SAFETY RULES WHEN GRINDING" ON PAGE 4 AND 5.
1. Mount the bedknife between the centers.
2. Rotate the bedknife and bedknife support forward until the angle finder reads the correct angle for grinding the
top face. Firmly tighten all knobs to assure the angle of the support and bedknife does not change during
grinding.
3. The front of the wheel must extend into the gutter of the bedknife. If it does not extend into the gutter, the
ground surface may not be flat after grinding. If necessary, rotate the grinding head to assure that the edge of
the wheel extends into the gutter of the bedknife. Infeed the grinding wheel until it is a few thousandths of an
inch away from the bedknife surface.
4. If the wheel does not clear the entire length of the bedknife, or if the bedknife is not aligned with the grinding
wheel, it may be necessary to align the bedknife using the gauge and the adjustments for up & down and in &
out.
5. When you have completed the set up, check to assure that all knobs and stops are secure, then with the
grinder turned off, travel the carriage from end to end to assure that the grinding wheel will grind only the
bedknife and clears all other parts of the machine and the bedknife.
6. Turn on the grinding motor switch and slowly infeed the wheel to the bedknife until there is a light grind. Turn
the infeed handwheel counterclockwise to infeed the grinding wheel. Manually traverse the carriage back and
forth. When infeeding, only infeed a maximum of approximatly .002-.003" [.05-.075mm] .
IMPORTANT! NEVER ALLOW THE BEDKNIFE EDGE TO CHANGE COLOR OR YOU MAY LOSE THE
TEMPER IN THE BEDNIFE EDGE.
IMPORTANT! When manually traveling the carriage on the BG1000, it is very important to use consistent
speed and pressure. Do not lean on the machine or bump the rails.
NOTE: During the grinding process, watch the spark pattern for the full length of grind, the sparks
should look equal for the full length of grind.
NOTE: If an excessive amount of metal stock will have to be removed on one end of the
bedknife, recheck your setup first and then the straightness of the bedknife. If it is bowed or
twisted, replace it.
7. Continue grinding the bedknife in this manner until you are satisfied with the top face grind. Dress the wheel
when necessary.
8. Dress the wheel before the final spark out grind. On the spark out passes, infeed the grinding wheel only about
.001" [.025 mm] and then let the grinding wheel spark out. For sparking out, always traverse the grinding head
10 to 20 passes without infeeding the grinding head. To get the finest top-face grind, traverse at a slow speed
for this final grinding sparkout. This process improves the surface finish of the grind and improves the grind
quality.
NOTE: What you are looking for is a "near sparkout" - about a 99% reduction in grinding spark
from a normal grind. Don't continue sparking out until you have no sparks, because this could
be an extremely long time.
By partially grinding both surfaces, the top face and the front face, you will resharpen a used bedknife with the least
metal removal. Partially grinding both surfaces is the preferred method for life utilization of the bedknife. See Fig 20
FIG. 20
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