Southbend SB1023 - Manual (Page 28)

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For Machines Mfg. Since 8/09 Model SB1023 O P E R A T I O N
Wheel Balancing
Static wheel balancing can be difficult and very
time consuming without practice. For accurate
grinding results, wheel balancing is mandatory.
For this balancing procedure, you will need a
wheel balancing fixture. The wheel balancing
fixture shown in Figure 33 is one example of the
many varieties available on the market.
Before proceeding, the grinding wheel must be
ring tested (refer to Page ) and dressed (refer to
Page ).
If flood coolant was used with the grinding
wheel, run the machine with the grinding wheel
installed for 5-minutes to sling off any residual
coolant that may have settled to the low side of
the wheel. If the paper washers are missing, wet,
or damaged, replace them before proceeding. If
during a period of machine operation, you find
that a finish is becoming poor, redress the wheel.
If that does not correct the problem rebalance
your grinding wheel.
To balance the grinding wheel:
1. DISCONNECT MACHINE FROM POWER!
2. Set up the wheel balancer as outlined in its
product user manual.
3. Remove the grinding wheel and hub as
a unit from the spindle as outlined in
Removing & Installing Grinding Wheel
Hub on Page 22.
Figure 33. Wheel on balancing fixture.
Figure 32. Dressing tool setup.
To dress the grinding wheel:
1. Insert the diamond tipped dressing tool into
its base (Figure 32), and use a 4mm hex
wrench to tighten the locking set screw.
2. Lower the headstock so the wheel is
approximately 5mm lower than the tip of the
dressing tool.
3. Position the tip of the dressing tool at the
trailing side of the wheel, as shown in
Figure 31, and move the table inward until
the diamond tip of the dressing tool slightly
touches the edge of the grinding wheel.
Verify by manually rotating the wheel and
listening for contact.
4. Turn on the magnetic chuck, and move the
cross slide so the tip is free of the grinding
wheel.
5. Start the grinder, and use the cross slide
handwheel to progressively move the table,
so the diamond sweeps across the wheel at a
depth between 0.01 – 0.03mm.