Sherline 5000 Mill Assembly Instructions

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any error, but in most cases there will be a small amount.
This can usually be eliminated by taking advantage of what
play does exist in the alignment key and slot. With the cone
point set screw loosened slightly, tap the headstock with a
plastic mallet to take out play in the direction you want to
go. Then retighten the set screw.
Making final adjustments
The rotating column and tilting adjustments can be finalized
so the indicator reads “0” as the spindle is rotated, however
the error we measured when checking the table flatness
could be accounted for now if need be. If the pointer on
the back of the rotary column disk doesn't line up with the
zero mark, loosen the screw holding it in place and reset it
to indicate zero for future reference. (Model 2000 mills
and 5000-series mills with rotary column attachment only.)
Your machine is now “indicated in” and ready to use. As
you get a feel for your machine and go through this
adjustment procedure a few times, the time it takes to get
good results will decrease. Being able to accurately indicate
in a mill is one of the skills that must be developed by any
machinist who plans on making accurate parts. Though the
adjustments on larger machines may be made in slightly
different ways, the skills and procedures you learn here
can be applied to other machines as well.
Using the column spacer block
MODEL 2000 MILLS (Standard)...In normal use the
column spacer block will not be required. However, if you
are working on a larger part or your setup requires more
clearance under the swing arm, the spacer block can be
installed to raise the column an additional two inches.
(Installation will be made easier if you first remove the
headstock/motor unit to reduce the weight of the column.)
To install the spacer block, remove the flange nut on top of
the column hold-down bolt, and lift off the hold-down washer
so that the entire column top and swing arm assembly can
be lifted off of the hold-down bolt. Screw the extension
bolt onto the end of the column bolt and tighten with an
adjustable wrench. Slide the column spacer over the bolt
and reinstall the column top and swing arm assembly.
Reinstall the headstock/motor unit.
NOTE: The column spacer block is included as standard
with the Model 2000 mill. It is optional at extra cost on all
mill column upgrades and 8-direction vertical milling columns
and upgrades.
MODEL 5000 AND 54OO MILLS (Optional)...There is
now an optional column spacer block available for use with
the standard mill column. It is P/N 1300 and includes longer
bolts needed to attach the column to the base through the
spacer block. The spacer block will add 2" of additional
distance between the spindle and the table. If you simply
need more travel, there is also an optional 15" column bed
(P/N 45260) and matching leadscrew (P/N 45270/45280),
allowing your column to be converted from the standard
11" height to add four more inches of Z-axis travel.
Working with setups that require extremely low
or high column travel
MODEL 2000 MILLS ONLY...An upgrade to the Model
2000 mill was introduced in March, 1999. It adds 1.6" of
travel to the lower end of the Z-axis movement so that end
mills can be brought down below the surface of the table
for working on the edge of parts. This travel extension is
now standard on all Model 2000 mills. The headstock may
be lowered even more by placing the column top (P/N
56550) above the swing arm instead of below it. Remove
the flange nut, hold-down washer and swing arm. Place
the swing arm over the hold-down bolt directly on top of
the column base (P/N 56660). Place the column top back
onto the hold-down bolt upside down and replace the hold-
down washer and flange nut. Although you cannot use the
alignment lines to help square up the head, this makes for a
very strong and stable setup. In most cases the new travel
extension will make this procedure unnecessary.
Should you wish to work on extremely tall setups that
combine several holding devices (i.e., a chuck on top of a
rotary table on top of a tilting angle table) you can extend
Z-axis travel on the top end by either adding an additional
spacer block to the column or by removing the saddle travel
extension and attaching the saddle directly to the saddle
nut as is done on standard Sherline mills.
Using the saddle locking lever
ALL SHERLINE MILLS...Along with the travel extension,
a new saddle locking lever was installed to replace the old
saddle friction lock used prior to 2/99. This new locking
FIGURE 21—Fine tuning the headstock rotation
alignment with a machinist's square and dial indicator.
The headstock pivots on the saddle pin. Even with the
alignment key in place, slight adjustment can be made
to get the headstock perfectly square.
HEADSTOCK PIVOTS ON
SADDLE PIN. EVEN WITH
ALIGNMENT KEY IN PLACE,
SLIGHT ADJUSTMENT CAN
BE MADE TO GET
HEADSTOCK PERFECTLY
SQUARE..