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G0554 Gear-Head Floor Lathe
The following is a list of common definitions, terms and phrases used throughout this manual as they relate
to this lathe and metalworking in general. Become familiar with these terms for assembling, adjusting or
operating this machine. Your safety is VERY important to us at Grizzly!
Arbor: A machine shaft that supports a cutting
tool.
Backlash: Wear
in a screw or gear mechanism
that may result in slippage, vibration and loss
of tolerance.
Collet: A conical shaped split-sleeve bushing
that
holds round or rectangular tool and/or
workpieces by their outside diameter.
Cross Feed: Lathe—Movement of cutting tool
across the end of the workpiece.
Mill—The movement of the table toward or
away from the column.
Cross
Slide: A fixture attached to the lathe car-
riage
that holds the compound rest and can
be moved in and out.
Cutting Speed: The distance
a point on a cutter
moves in one minute, expressed in meters or
feet
per minute.
Dial
Indicator: An
instrument used in setup and
inspection work that shows on the amount of
error in
size or alignment of a part.
Dividing Head: A milling
machine accessory
used to divide a circular object into a number
of equal parts.
Down Milling or Climb Milling: Feeding the
workpiece in the same
direction as the cutter
rotation (opposite of standard milling).
End
Mill: A cutter with cutting surfaces on both
the circumference and
end.
Facing: In
lathe work, cutting across the end of a
workpiece, usually to machine a flat surface.
Feed: The
movement of a cutting tool into a
workpiece.
F
ixture: A
device that securely holds the
workpiece in place during cutting operation
as opposed to a Jig which is used to hold
and
guide a workpiece through an opera-
tion.
Gib: A tapered
wedge located along a sliding
member to
take up wear or to ensure a
proper fit.
Headstock: The
major lathe component that
houses the spindle and motor drive system
to turn the workpiece.
Lathe Center: A
lathe accessory with a 60°
point which is inserted into the headstock or
tailstock of the lathe and is used to support
the workpiece.
Leadscrew: Lathe—The
long screw that is driv-
en by the end gears and supplies power to
the carriage. Mill—The screws that move the
table in longitudinal, transverse, or vertical
directions.
Spindle: The
revolving shaft that holds and
drives the workpiece or cutting tool.
Tailstock: A
moveable fixture opposite of the
headstock on a lathe that has a spindle used
to support one end of a workpiece and for
holding tools.
Toolpost: The
part of the compound rest that
holds the tool holder.
Turret: Lathe—A machine fixture that holds mul-
tiple
tools and can be revolved and indexed
to
position. Mill—The part of a mill that
rotates on the column and can be
set to a
specific degree.
Ways: The
precision machined and flat tracks
on a lathe or mill on which the carriage,
tailstock, mill table, and knee slide.
Glossary Of Terms