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Quality Machine Tools PM-940M Manual page 6

Heavy duty milling machine

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UNCRATING THE MILL
The PM-940M is shipped in two packing cases. Uncrat-
ing the stand is straightforward. If available, use a forklift
to handle the mill; if not, an engine hoist such as that
shown in Figure 2-3 may be used.
Setting up the stand
A suggested procedure:
.
Lower the stand packing case onto a dolly or pallet
jack.
2.
Remove the packing materials, then roll the stand to
its working location.
3.
Slide the stand off the dolly or pallet jack.
The stand comprises two iron castings, a hollow casing
and a tray. The back side of the casing has holes for pip-
ing and wiring to and from a coolant pump which may be
located within the casing. A coolant drainpipe is provided
in the tray casting. Rotate the tray to bring the drain to
the back.
Check local codes for machine tool fastening require-
ments. If none is specified, leveling mounts are rec-
ommended. Use mounts with a /2-3 threaded stem,
and a load capacity of not less than 400 lb per mount.
Mounts with a smooth underside such as nylon allow
minor repositioning even with the mill in place. Thread
length should be about 3 inches (longer stems won't fit
in the pockets).
With the stand in its approximate working location, level
it using the rim of the tray casting. Final leveling should
be done with the table as the reference surface once the
machine has been installed and bolted to the stand.
Time-saving suggestion
The tray casting slides freely on top of the stand. This
makes it difficult to keep the holes aligned when the mill
is lowered into place. One way to save effort is to an-
chor the tray to the stand with two or more wood dowels
tapped in from above. The dowels need to be sized to
allow them to be driven through when the time comes to
install the mounting bolts on the mill.
PREPARING THE MILL
The following assumes an engine hoist will be used.
Some experimentation may be necessary. A suggested
procedure:
.
With the mill remaining on the shipping pallet, re-
move all packing materials except for the single
sheet under the mill.
2.
Roll the engine hoist onto the bottom sheet, Figure
PM-940M 0-206 v.indd
Figure 2- Cast iron stand
Figure 2-2 One style of leveling mount
2-3. Set the upper arm of the hoist as far out as pos-
sible — but not beyond the point where its lifting
capacity is less than 500 lb.
3.
Remove the side rail(s) from the bottom sheet of the
pallet. This allows the hoist to be rolled further in
to bring the lifting chain just in front of the column,
Figure 2-4.
4.
Check that the headstock (Z-axis) is fully lowered
(spindle nose just clear of the table), then run a sling
"basket style" under the headstock, as Figure 2-5.
Wrap a soft cloth around the sling to prevent dam-
age to the paintwork and the tilt scale.
6

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