SECTION 5 UNITS 1 & 2

The jaws of ____ chucks are advanced and retracted independently of each other and allow for fine-tuning the position of the workpiece for maximum accuracy.

independent

A(n) ____ tool post consists of a T-nut, clamping stud, and a multi-sided tool block with either removable or integral toolholders.

indexable

A ____ is mounted in a bearing cartridge and freely rotates with the workpiece while the mounting shank stays stationary.

live center

The ____ tool post consists of a T-nut, clamping stud, and tool post.

quick-change

____ have holes in their centers to match the size and shape of the workpiece to be held.

Collets

____ tool posts and holders have been largely replaced since they do not offer as much rigidity as newer toolholding methods.

Rocker-type

____ collets are very accurately ground cylindrical sleeves.

Spring

____ collets are used to grip on short workpieces whose diameters are too large to fit within the envelope of standard spring collets

Step

The lathe ____ is located on the right side of the headstock and is the foundation of the entire machine.

bed

The ____ supports the lathe cutting tool and provides the tool with the movement needed to perform machining operations.

carriage

The jaws are closed and opened by inserting a special wrench called a ____ into a socket on the chuck.

chuck key

The ____ slide sits atop the saddle and provides cutting-tool movement perpendicular to the ways.

cross

A(n) ____ is a specially designed plate that is mounted on the spindle nose.

drive plate

A ____ is mounted to the headstock spindle and is generally made of cast iron with a series of slots machined into its face.

faceplate

The apron also contains the ____ lever that is used to switch between longitudinal and cross feed.

feed change

The ____ is a bar that spans the length of the bed and contains gear teeth.

feed rack

Most ____ chucks move independently of each other, and each has its own adjusting screw.

four-jaw

On a ____ lathe, a small portion of the lathe bed can be removed to allow larger-diameter workpieces to be machined.

gap bed

Just under the headstock is another gear train called the quick-change ____.

gear box

The ____ is located at the upper left side of the engine lathe.

headstock

A(n) ____ chuck is a device used to clamp a workpiece in the lathe spindle by applying pressure on multiple sides.

jaw-type

The ____ is a very long threaded rod supported by bearings at both ends.

leadscrew

The sliding motion of the saddle is parallel to the ways and is called ____ feed.

longitudinal

A ____ is a special precision cylindrical shaft that can be inserted through the center bore of the workpiece to secure it for machining.

mandrel

The ____ is an H-shaped casting that slides back and forth on the ways.

saddle

The ____ is the part of the machine that holds and rotates work during machining.

spindle

The headstock ____ is used to attach various workholding devices to the spindle.

spindle nose

A ____ clamps directly to the lathe's ways and acts as a brace to surround and support the workpiece.

steady rest

A belt drive lathe transmits power from the motor to the spindle by means of belts and what is known as a ____.

step cone pulley

The ____ of the lathe is determined by the biggest diameter workpiece that can be mounted in the spindle without touching the ways.

swing

The ____ can be used to secure workholding accessories to help support the workpiece in many operations.

tailstock

The jaws of ____ chucks advance and retract simultaneously.

universal

The top of the lathe bed contains precision-ground flat and v-shaped rails known as the ____.

ways