G9729 Combination Lathe/Mill
-9-
The following is a list of common definitions, terms and phrases used throughout this manual as they relate
to this lathe/mill 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
which holds round or rectangular tool and/or
workpieces by their outside diameter.
Cross Feed:
Mill—The movement of the table
toward or away from the column.
Lathe—Movement of cutting tool across the
end of the workpiece.
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 a dial 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.
End Mill:
A cutter with cutting surfaces on both
its 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.
Fixture:
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 operation.
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 direc-
tions.
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 hold-
ing 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 which 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,
and the mill table and knee slide.
Glossary Of Terms
Содержание G9729
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