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6.
Tighten draw bar firmly using provided wrench. Turn
draw bar. The tool is now ready for use.
8.17 Clamping workpiece to table
The worktable has 5/8-inch T-slots for clamping
workpiece to table.
1.
Set motor switch to neutral (stop) position.
2.
Place workpiece on table.
3.
Clamp workpiece using T-slot clamps, studs, and
step blocks as required (Figure 8-11).
Figure 8-11
9.0 Adjustments
9.1 Mill head – left/right adjustment
Make sure machine base is secured
to floor before repositioning mill head. The center of
gravity can shift enough to cause machine to tip over,
resulting in serious injury to operator and damage to
machine.
1.
Loosen four large hex nuts that secure mill head to
ram adapter (A, Figure 9-1). One-quarter (1/4) turn
should be sufficient to allow head to move.
NOTE: For angles greater than 10 degrees, use your
free hand to support mill head, taking some weight
off the brass worm gears. Doing so will greatly
lengthen life of worm gears.
2.
Turn worm nut (B, Figure 9-1) to tilt head left or right
as required. Use scale on ram adapter to set desired
angle.
Note: Scales on ram adapter and for head rotation
are guides only. Close tolerance work will require use
of a dial indicator to make sure head is 90° to table
in X and Y axis. Please note the table is fitted to be
slightly higher in front, usually about 0.0005".
3.
Tighten the four hex nuts. Tighten in two steps using
a calibrated torque wrench. Use a crossing pattern to
tighten the nuts. Tighten initially to 25 foot-pounds.
a crossing pattern. Failure to do so could distort
face of ram adapter.
4.
Before applying final torque, check to make sure mill
head is perpendicular to work table.
5.
Set up a dial indicator in a collet and secure using
draw bar (refer to Figure 9-2).
6.
Put spindle drive in neutral.
7.
Set dial indicator plunger on work table. Zero
indicator.
8.
Rotate spindle 180 degrees (when rotating, raise dial
indicator plunger by hand to prevent it from dropping
into table T-slots).
9.
Read dial indicator – it should read zero. If not,
loosen the four hex nuts and reposition mill head.
16
Figure 9-1
Apply torque in two steps using
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