Sherline Products 3701 User manual

WEAR YOUR
FORESIGHT IS BETTER
THAN NO SIGHT
READ INSTRUCTIONS
BEFORE OPERATING
SAFETY GLASSES
SHERLINE PRODUCTS INC. •3235 Executive Ridge •Vista •California 92081-8527 •FAX: [phone]
Toll Free Order Line: [phone] •International/Local/Tech. Assistance: [phone] •Internet: www.sherline.com
6/4/18
The Sherline right angle attachment has been designed
to easily put the rotary table on a vertical plane and still
maintain rigidity.
Installation
Remove the hold-down tab (see rotary table exploded view,
part #16) from the worm housing and loosely bolt the right
angle attachment base (part #14) to the housing with the
rotary table base. (NOTE: The mounting holes on the side
of the worm housing go all the way through. In order to
keep dirt and chips from entering the worm housing, set
screws have been installed in the holes. Before the rotary
table can be mounted to the right angle attachment base,
these set screws must be removed. Be sure to reinstall
them when the rotary table is removed from the right angle
attachment.) Back out the vertical adjustment screw (part
#3) and start the vertical clamp screw (part #20), but do
not tighten. Tighten the four right angle attachment base to
worm housing screws and mount to milling table with the
rotary table indicated in with the Y-axis. The vertical plane
can be aligned by moving the indicator up and down with
the Z-axis while reading the table. The vertical clamp and
set screw can now be adjusted for “0” indicator reading. The
accuracy that must be attained when indicating the rotary
table in is somewhat determined by the size of the part.
In many cases it is wise to align and clamp the part to
the table before bringing the rotary table to the vertical
position. In this manner you have the milling machine
spindle to help align the part.Aligning the milling machine
to the work with the rotary table in the vertical position is
usually accomplished by measuring in from a side of the
part with an edge nder or “touching o” with a cutting
tool. Fortunately, you would very seldom have to align the
spindle to the rotary table in both axes. If the need arises
and you don’t have a true (TIR) running surface to work
to, try and leave yourself a “machining pad” on your part
to do this. Once the rotary table has been aligned to the
mill, use an end mill to machine a at on the “machining
pad” with the side of the end mill, moving the Y-axis to
determine depth of cut and X-axis for length of cut. Rotate
part 180° and cut to identical handwheel readings. Now
measure across these ats and move the Y-axis one-half of
this dimension plus one-half the cutter diameter towards
the center with the cutter out of the way. Rotate 90° and
“touch o” the end of the cutter on a at that was machined
to determine center. The Z-axis can be lowered one-half
the diameter to put the tools on center. If these pads are
left on the work, other cutting tools could be located in
the same manner and the pads then could be machined o
when they are no longer needed.
Aligning a P/N 3702 Adjustable Right Angle Tailstock
An adjustable tailstock is available if you need to
support the end of a shaft held on center in the rotary
table when it is mounted vertically. On a lathe, turn a
short bushing that just ts into the center hole of the
rotary table. (OD = 0.437 dia.) Center drill the end
before removing it from the lathe.After the rotary table
is mounted on the right angle bracket and is square to
the mill, insert the bushing into the table's center hole.
Use no screws or tee nuts to locate it yet so the right
angle tailstock can easily move around. Extend the
spindle about 0.5". With a dead center installed in the
spindle, push the point of the center into hole in the
end of the bushing. Lightly tighten the screws to hold
the spindle section of the tailstock in place while it is
in the center drilled hole. Indicate the top surface level
and tighten screws. This should align the tailstock in
the vertical plane.
Attach your part to the rotary table and line up the
center of the tailstock in the same manner with the
tee nuts in place. Indicate the part in place so it is in
alignment with the mill. Remember that the tailstock
spindle doesn’t have to be in perfect alignment with
the table because it isn’t being used for drilling. It is
only being used to support the end of the part mounted
on the rotary table.
You will nd these accessories interesting, but their use
will require a lot of planning.
Good Machining!
Thank you,
Sherline Products Inc.
Right Angle
Attachment for 4"
Rotary Table
P/N 3701
NOTE: See the exploded view of the P/N 3700 Rotary
Table for the parts included in the right angle attachment.

Parts List
REF.
NO.
PART
NO.
DESCRIPTION REF.
NO.
PART
NO.
DESCRIPTION
1 10930 3/8" Bearing 15 37200 Button Hd Screw, 10-32 X 3/8"
2 30560 10-32 T-nuts 16 37210 Hold Down Tab
3 31080 Set Screw, 10-32 X 3/8" (P/N 3701 only) 17 37220 Button Hd Screw, 6-32 X 1/4"
4 35580 Hold Down Clamp 18 40050 Handwheel Assembly
5 37090 Chuck Adapter 19 40330 SHC Screw, 10-32 X 5/8"
6 37100 Rotary Table Base 20 40340 SHC Screw, 10-32 X 1" (P/N 3701 only)
7 37110 Table 21 40420 Headstock Bearing
8 37120 Worm Housing 22 40510 SHC Screw, 10-32 X 3/8"
9 37130 Worm Gear 23 40520 Cup Point Set Screw, 10-32 X 3/16"
10 37150 Oiler 24 40540 Cone Pt Set Screw, 5/16-18 X 3/4"
11 37160 Preload Nut 25 40660 Washer, 3/16" I.d.
12 37170 Lock Pin 26 40670 SHC Screw, 10-32 X 1/2"
13 37180 Upright (P/N 3701 only) 27 50120 Pointer
14 37190 Right Angle Base (P/N 3701 only)
P/N 3701, Pg. 2 OF 2
Exploded View
Sherline 4" Rotary Table, P/N 3700
(Including Right Angle Attachment, P/N 3701)