Grizzly G0776, Руководство пользователя

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Model G0776 (Mfd. Since 7/14)
-39-
Note: The marks on the offset indicator are arbi-
trary. For a precise offset, use a dial indicator to
check quill movement while adjusting the screws.
Offsetting Tailstock
The tailstock quill can be offset from the spindle
centerline for turning tapers. Offsetting the quill
toward the front of the lathe results in a taper at
the tailstock end. Conversely, offsetting the quill
toward the back of the lathe results in a taper at
the spindle end.
Offset
Indicator
Adjustment
Set Screw (1 of 2)
Figure 40. Left offset adjustment.
Tools Needed Qty
Hex Wrench 5mm .............................................. 1
1. Loosen offset locking set screw to allow lat-
eral movement of tailstock.
2. Loosen tailstock lock lever to release clamp-
ing pressure.
3. Rotate adjustment set screws in opposite
directions for desired offset (see
Figure 41).
Figure 41. Example of set screw adjustment in
relation to tailstock movement.
Turn
CCW Turn
CCW
Turn
CW
Turn
CW
4. Retighten offset locking set screw to secure
offset.
Offset Locking Set Screw
Aligning Tailstock to Spindle
Centerline
Figure 42. Turning a dead center.
This is an essential adjustment that should be ver-
ified or performed each time the tailstock is used
to turn concentric workpieces between centers
or immediately after offsetting the tailstock when
turning a taper. If the tailstock is not aligned with
the spindle centerline when it is supposed to be,
turning results will be inaccurate along the length
of the workpiece.
Items Needed Qty
Hex Wrench 5mm .............................................. 1
Round Stock 2" x 6" .......................................... 2
Precision Level .................................................. 1
To align tailstock to spindle centerline:
1. Use precision level to make sure bedway is
level from side to side and from front to back.
— If bedway is not level, correct this condition
before continuing with this procedure (refer
to
Leveling section in this manual).
2. Center drill both ends of a piece of round
stock, then set it aside for use in Step 5.
3. Use another piece of round stock to make a
dead center. Turn it to a 60° point, as illus-
trated below.