Baileigh Industrial BBG-8, Инструкция по эксплуатации и каталог запасных частей

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4.12 Grinding Wheel Installation
Refer to Figure 5:
1. Unplug grinder from power source.
2. Move tool rest and eye shield out of the way.
3. Remove wheel guard.
4. Remove arbor nut (1” wrench) and outer
flange. ( NOTE: The left arbor nut has left-
hand threads; rotate clockwise to loosen.)
5. Make sure that inner flange is seated
properly against shoulder of arbor.
6. Install wheel, outer flange and nut. Make
snug the nut using the 1” wrench – do not
overtighten, as this may cause deflection of
the flanges.
7. Repeat for opposite side.
8. Inspect wheel for proper balance, as
described in section 6.13 . An out-of-balance
wheel will result in excessive vibration and
poor surface finish of tools.
Figure 5: Wheel Mounting
4.13 Wheel Balancing
With the grinder unplugged from the power
source , and arbor nuts snugged down, rotate
wheels by hand and observe their motion.
A grinding wheel has proper balance when:
1. The outside face of the wheel spins true and
round; that is, its circumference rotates
concentric to the arbor.
2. There is no side-to-side wobble.
The operator who takes time to patiently perform
needed adjustments will be rewarded by wheels
running true, and accurate grinding of work
pieces.
4.13.1 Adjusting Concentricity
If the outside face is not rotating concentric to
arbor, try shifting the wheel closer to arbor
centerline
before tightening the nut.
See A, Figure 6.
Another method of achieving concentricity is the
use of a wheel dresser (not provided). “Dressing”
is the removal of the current layer of abrasive to
expose a fresh surface. A wheel dresser is also
used to “true” a wheel; that is, to make the
grinding surface parallel to the tool rest, so the
entire wheel presents an even surface to the work
piece. Proper use of a wheel dresser will
eliminate high spots and result in concentric
rotation about the arbor, as well as minimize
vibration. (Always follow the wheel dresser
manufacturer’s instructions.)
Figure 6: Wheel Balancing
4.13.2 Correcting Side-to-Side Wobble
1. Loosen nut and rotate the outer flange a little.
Snug the nut and spin the wheel by hand to
check.
2. If wobble still exists, continue repeating step
1, rotating outer flange incrementally in the
same direction. See B, Figure 6. Make sure
to keep the wheel in the same position each
time.
3. If complete rotation of outer flange has
proved ineffective, remove nut, outer flange,
and wheel (keep wheel in same orientation
by placing a pencil mark on it somewhere for
reference). Then rotate inner flange about
90° and repeat the above steps for the outer
flange.
4. Continue this combination of flange
movements until the wobble is eliminated.