Sherline 5000 Mill Assembly Instructions

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4. Set the outer belt guard in place, locating the other post
of the hinge plate (C) in its pivot hole (D). The motor
standoff ends will register in holes in the outer belt guard.
Make sure the drive belt is routed properly, then secure
the cover with the two 1-3/8" pan head screws that go into
nuts pressed into the back of the inner belt guard.
5. Attach the motor mounting bracket to the rear of the
headstock with two 10-32 x 3/8" socket head screws. (These
screws are shipped threaded into the headstock rather than
in the parts bag.) There is enough “play” in the mounting
holes to allow you to ensure the motor is visually mounted
parallel with the spindle axis. (Note: If a chip guard is to be
mounted, its attachment screw replaces one of these
mounting screws. It can be mounted at this time or after
the headstock is in place. (See chip guard instructions.)
5000-SERIES MILLS—MOUNTING THE COLUMN
The mill is shipped attached to a piece of plywood to keep
it from moving in the box. Before you begin, remove the
screws holding the mill base to the plywood. It was installed
strictly for packing purposes and will need to be removed
so that the column can be installed.
The Z-axis column is mounted to the base
with two 1-3/4" long, 1/4-20 socket head
screws. These screws and the hex key tool
you will need to tighten them are packaged
in the bag with the motor mounting
bracket and drive belt. It is much easier
to mount the column to the base before
you mount the motor and speed control
to the saddle.
Set the column on the base aligned with
the mounting holes and hold it in
position while you insert the first
screw up from the bottom of
the base. Hand-turn the first
screw part way in, and then
start the second screw. This
can be done with the machine
upright by letting the base hang
over the edge of your table or
bench just far enough to expose
the first hole. Using the large 3/16" hex key provided, snug
up both screws lightly first, and then tighten evenly.
2000-SERIES MILLS—ASSEMBLING AND MOUNTING THE
MULTI-DIRECTION COLUMN
To assemble the multi-direction column, make reference to
the exploded view on page 44 of these instructions and
complete the steps that follow:
1. Attach the round column base (P/N 5666) to the mill
base with the two 1/4-20 x 1-1/2" socket head cap screws.
2. Screw the arm hold-down bolt (P/N 5613) into the top
of the round column base and tighten with an adjustable
wrench using the two flat indentations on the shaft.
3. Slip the round column top (P/N 5655) over the pin and
rotate it until the flat sides are parallel to the mill base with
the engraved indicator line on the same side as the X-axis
handwheel.
4. Using an 11/16" or a 17 mm wrench, loosen the flange
nut holding the bed and swing arm together. Rotate the bed
away from the swing arm until they are at approximately a
90° angle to each other. Retighten the flange nut firmly to
hold the column in this position. Discard the protective spacer
that was installed between the bed and arm during shipping.
5. Set the swing arm over the column and align it
approximately square with the mill base and in about the
center of its travel. Make sure the swing arm registers on
the flats of the column top and is properly seated. While
still holding the swing arm unit in place, set the hold-down
included with the P/N 8100 digital readout to install the
encoder housing and handwheel unit.
washer (P/N 5620) over the end of the bolt. Put a flange
nut on the end of the bolt and tighten it against the hold-
down washer firmly to lock the swing arm in place. NOTE:
There should be NO lubrication on the mating surfaces
between the arm and the column base. Friction between
these surfaces keeps the arm from moving during cuts.
6. Place the column adjustment block (P/N 5635) on top
of the swing arm and attach it with two 10-32 x 5/8" socket
head cap screws at both ends. Adjust the 1" long center
bolt so that it is just touching the flat in the bottom of the
relieved section in the top of the pivot knuckle when the
column is in the 90° position.
NOTE: If you remove the column adjustment block to
accommodate a backward tilt movement of the column,
make sure you replace it when returning the column to an
upright position. It not only serves as a reference point
when returning the column to the 90° position, it also keeps
it from accidentally swinging down and damaging the table
if the flange nut is loosened.
7. Slip the alignment key into its keyway in the mill saddle.
Place the headstock/motor/speed control unit over the pin
on the mill saddle and over the alignment key. Tighten the
set screw in the side of the headstock to hold the entire unit
in place. Recheck to be sure you have tightened the flange
nut on the shouldered bolt pivot pin securely so that all the
weight of the column is not resting on the column adjustment
block bolt.
MOUNTING THE MOTOR AND SPEED CONTROL
UNIT TO THE HEADSTOCK
(Refer to Figure 6 and the exploded views and number list
on pages 42, 43, 44 and 45 for part number references.)
1. Remove the motor pulley from the motor shaft. Mount
the inner belt guard to the motor using the two standoffs
(P/N 4310). Next, install the motor pulley (P/N 4336) to
the motor shaft and tighten the set screw. The end of the
pulley should be just about even with the end of the motor
shaft, with the smaller pulley toward the end of the shaft.
2. Place the drive belt over the motor pulley.
3. Place the round post (A) on the speed control hinge
plate in the hole on the inner belt buard (B).
FIGURE 5—Mounting
the 5000-series mill Z-
axis column
CHECK THE TIGHTNESS OF ALL BOLTS
Vibration in shipping can cause some bolts or screws to loosen
up. Before using your new machine, check the tightness of all
fasteners. It is also a good idea to check tightness periodically
when using the machine, as vibration from operation may
cause some fasteners to loosen up.