Central Machinery 45861 Set Up And Operating Instructions Manual page 12

bed: Main supporting casting run-
ning the length of the lathe
between centers: A dimension
representing the maximum length
of a workpiece that can be turned
between centers. Also a method of
holding a workpiece by mounting it
between the centers of the headstock
and the tailstock spindles.
carriage: The assembly that moves
the tool post and cutting tool along
the ways.
carriage handwheel: A wheel with
a handle used to move the carriage
by hand.
center: A precision ground tapered
cylinder with a 60º pointed tip and
a Morse Taper shaft. Used in the
tailstock to support the end of long
workpieces. May also be used in the
headstock spindle to support work
between centers at both ends.
center drill: A short drill used to
form pilot holes and countersunk
holes.
centerline: An imaginary line ex-
tending from the center of the spindle
through the center of the tailstock
ram, representing the central axis
of the lathe around which the work
rotates.
chuck: A clamping device for hold-
ing work in the lathe or for holding
drills in the tailstock.
compound: Movable platform
where the tool post is mounted; it can
be set at an angle to the workpiece
(also known as compound slide and
compound rest).
SKU 45861 For technical questions, please call 1-800-444-3353.
compound handwheel: The wheel
used to move the compound slide in
and out.
cross Slide: Platform that moves
along the lathe axis under control of
the cross-slide handwheel.
cross Slide handwheel: The wheel
used to move the cross slide in and
out (also called cross feed).
Faceplate: A metal plate with a flat
face-mounted spindle to hold irregu-
larly shaped work.
Facing: A lathe operation in which
metal is removed from the end of a
workpiece to create a smooth sur-
face.
gib: An adjustable length of steel or
brass with a diamond shaped cross-
section that engages one side of the
dovetail slide. Used to adjust the
dovetail for optimum tightness and to
compensate for wear.
halfnut: A nut formed from two
halves which clamp around the lead-
screw to move the carriage.
halfnut lever: This Lever engages
the carriage with the leadscrew.
headstock: The main casting
mounted on the left end of the bed
where the spindle is mounted. Hous-
es the spindle gears.
leadscrew: Screw used to drive the
carriage under power for turning and
thread cutting operations. Smaller
leadscrews are used within the cross-
slide and compound to move those
parts by precise amounts.
Morse taper (Mt): A taper of spe-
cific dimensions used to mate match-
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