Chapter 14, 15, 16 Manufacturing Test Quizlet

Lathe filing requires a ____ (high/low) spindle speed.

high

When cutting inch base even numbered threads, the half-nuts can be engaged at any ____ on the thread dial.

line

On a single thread, the lead and ____ are the same.

pitch

Drills over ____ in diameter require a pilot hole.

1/2"

The compound rest is set at ____ to cut sharp threads.

29°

A ____ chuck can hold irregular shape work as each jaw has individual movement.

4-jaw independent

A(n) ____ type chuck is normally fitted in the tailstock for drilling.

Jacobs

A pilot hole should have a diameter equal to the larger drill's ____.

dead center

A ____ is seldom used on modern lathes.

threaded spindle nose

A taper is useful in machining technology because ____.

All of the above

Cutting left-hand threads requires ____.

All of the above

Screw threads have many uses, including ____.

All of the above

Which of the following actions are considered dangerous when operating a lathe?

All of the above; Measuring with work rotating, using compressed air to clean the machine, and Wearing loose clothing and jewelry

Cutter bits are ground to cut ____.

It depends on the tool

The ____ of cut refers to the distance the cutter is fed into the work.

depth

A(n) ____ on a workpiece is the point where the diameters change.

shoulder

____ threads are usually employed to transmit motion.

square

A(n) ____ mandrel is helpful when several pieces must be turned.

gang

A(n) ____ lathe file has superior cutting action over a regular mill file.

long-angle

A boring bar is positioned ____ for machining.

on center

On the ____ thread, the top and bottom are flat, but the sides have a 29° included angle.

Acme

When reaming on the lathe, use a(n) ____.

All of the above; adequate supply of cutting fluid, slow, steady feed, and cutting speed about 2/3 that of a similar size drill

The spindle on a lathe is hollow and tapered internally to ____.

All of the above; allow the use of a knockout bar, receive tools and attachments with taper shanks, and permit long stock to be turned without dangerous overhang

Collets can ____.

All of the above; center work automatically, maintain accuracy over long periods of hard usage, and be expensive because a different size collet is needed for each different size or stock shape

Boring is an internal machining operation ____.

All of the above; employed to enlarge a hole to a specified size, in which a single-point tool is used to enlarge a hole, and that produces a hole concentric with the outside diameter of a workpiece

The tailstock ____.

All of the above; is necessary to support long work being turned, permits taper turning to be done, and is essential for drilling operations on a lathe

There are a number of factors that must be considered when determining the correct cutting speed and feed rate, including the ____.

All of the above; kind of material being machined, cutting tool material, and condition of the lathe

If a lathe dog binds on the faceplate slot, the piece being turned will ____.

All of the above; not be concentric with the center hole, be pulled off-center, be eccentric with the center hole

The steady rest and follower rest are used to ____.

All of the above; prevent work from springing or bending away from the cutting tool, support long slender work, and reduce or eliminate chatter when long shafts are machined

The finish cut brings the work to ____.

All of the above; size using high spindle speed, a sharp cutting tool, and fine feed, the required diameter, and the required surface finish

A tool post grinder permits the lathe to be used ____.

All of the above; to sharpen reamers and milling cutters, for internal and external grinding, and to true lathe centers

Approximate alignment of lathe centers can be determined by checking ____.

All of the above; witness lines at the base of the tailstock, centers visually by bringing them together, and diameters on a sample turned section

Always check the thread pitch after the first light cut with a ____.

Both B and C

External Thread

Cut on outside diameter of piece.

Internal thread

Cut on the inside of the piece.

____ indicates the distance the work moves past the cutting tool per minute.

Cutting speed

Pitch

Distance from one point on a thread to a corresponding point on next thread.

What is the first step step that should be performed before using the lathe?

Do not attempt to operate a lathe until you know the proper procedures and have been checked out on its safe operation by your instructor.

Pitch Diameter

Imaginey diameter at the point where the widths of the thread and groove are equal.

Major Diameter

Largest diameter of the thread.

The lead screw transmits power from the quick change gear box to the ____.

None of the above

The spindle will have to be ____.

None of the above

Reaming is an operation used to produce a hole ____.

accurate in diameter and improved surface finish

When boring on a lathe, ____.

additional front clearance must be ground on the cutting tool to avoid rubbing

When cutting inch base odd number threads, the half-nuts are engaged at ____ on the thread dial.

any numbered line

Cutting threads involving one-half of a thread in each inch, such as 11 1/2, close the half-nuts at ____ on the thread dial.

any odd numbered line

The ____ contains the drive mechanism to move the carriage along the ways using hand or power feed.

apron

The jaws on a 4-jaw independent chuck ____ to hold larger diameter work.

can be reversed

The jaws on a 3-jaw universal chuck ____.

cannot be reversed to hold larger diameter work

The ____ controls and supports the cutting tool.

carriage

There are times when a shaft is unsuitable as a bearing surface and cannot be used with a steady rest. When this occurs, a(n) ____ can be employed so the shaft can be supported with the steady rest.

cat head

When cutting sharp V-threads, a(n) ____ gage is used for grinding the cutter and setting it in position.

center

Tailstock offset can be determined visually by measuring the distance between the ____, or between the witness lines on the base of the tailstock.

center points

Accuracy in drilling requires a(n) ____ starting point for the drill.

centered

Work mounted on a mandrel is usually machined between ____.

centers

When boring on a lathe, additional front ____ must be ground on the cutting tool to prevent it from rubbing.

clearance

To get the best cutting performance, a cutter bit must have a keen, properly shaped ____.

cutting edge

Parting is the operation of ____.

cutting off material after it has been machined

The swing of a lathe indicates the largest ____.

diameter work that can be turned over the ways

Angular knurls raise a(n) ____ pattern.

diamond

Grinding wheels are dressed with a(n) ____ wheel dresser.

diamond

When drilling on a lathe, the drill is prevented from revolving by the ____ bearing against the compound rest.

dog

If the live center on a lathe does not run true, the work will have diameters that are ____.

eccentric

Slower speeds with greater power are obtained on some lathes by ____.

engaging back gear

For all ____, close the half-nuts at any line on the thread dial.

even numbered threads

A(n) ____ mandrel permits work with openings that vary slightly from standard size to be turned.

expansion

If the cutting speed is too slow, ____.

extra time will be needed to complete the job

____ is the distance the cutter moves longitudinally along the ways during a single revolution of the work.

feed

Polishing is an operation used to produce a(n) ____ finish on the work.

fine

The bent-tail standard dog ____.

has the setscrew exposed

A bent-tail safety lathe dog ____.

has the setscrew recessed

The longest piece of work that can be turned between centers is equal to the length of the bed minus the space taken up by the ____.

headstock and tailstock

In most lathe operations, you will be using a single-point cutting tool made of ____.

high-speed steel (HSS)

When performing internal grinding on the lathe, the work and the grinding wheel must rotate ____.

in opposite directions

A taper is a section of material that ____.

increases in diameter at uniform rate

The ____ method of filing is the safest way to file on a lathe.

left-hand

An accurate setover can be made by using the ____ dial on the compound rest or cross slide or a dial indicator.

micrometer

Never attempt to part stock that is held ____.

mounted between centers

Assuming that power is being transmitted through the gearbox, if the quick-change gearbox is changed, the cutting tool will ____.

move faster or slower if the carriage is engaged to the lead screw

The face of the thread dial rotates when the half-nuts are ____.

not engaged

For all ____, close the half-nuts at any numbered line on the thread dial.

odd numbered threads

The lathe operates on the principle ____.

of the work revolving against the controllable cutting tool

The spindle speed when performing a parting operation is about ____ the speed used for conventional turning.

one third -or- 1/3

A groove is cut at the point where the thread is to terminate and serves to ____.

permit a nut to run up to the end of the thread

The ____ must be known to measure thread accuracy with a thread micrometer.

pitch diameter

When boring with long, slender boring bars, chatter may occur but can usually be eliminated by ____.

reducing tool overhang

Angular cuts can be made using the compound ____.

rest

The chief function of any lathe, no matter how complex, is to ____.

rotate the work against a controllable cutting tool

____ cuts are made to reduce work diameter to approximate size.

roughing

The ____ is fitted to the carriage and slides along the ways.

saddle

The offset tailstock method for turning tapers is also known as the ____ tailstock method.

setover

A(n) ____ bar is a very accurately machined bar that is used in conjunction with gage blocks and sine tables to precisely measure angles.

sine

When facing stock, a rounded "nubbin" of face material results if the cutting tool is ____.

slightly above center

When facing stock, a square shoulder "nubbin" of face material results if the cutting tool is ____.

slightly below center

The automatic screw machine has been developed for the high speed production of large numbers of ____ (small/large) parts.

small

A(n) ____ mandrel is made from hardened steel that has been machined with a slight taper.

solid

Holding a file ____ against the rotating work will cause it to load with metal and score the surface.

stationary

Lathe size is determined by the ____.

swing and length of the bed

When drilling on a lathe, drills larger than 1/2" (12.5 mm) in diameter usually have ____ shanks.

taper

The most accurate method for cutting tapers is the ____.

taper attachment

Tapers can be turned with a compound rest if the ____.

taper is converted to degrees

If the cutting speed is too high, ____.

the cutting tool will dull rapidly

Round and hexagonal stock will center automatically in a 3-jaw universal chuck because ____.

the jaws move simultaneously

Cutting threads involving one-fourth of a thread in each inch, such as 4 3/4, close the half-nut at ____ on the threading dial.

the original starting line

When cutting internal threads, tool infeed and removal from the cut are ____ when cutting external threads.

the reverse of those used

For all ____, close the half-nuts at any odd numbered line on the thread dial.

threads involving one-half of a thread in each inch

A boring bar should extend from the ____ only far enough to do the job.

toolholder

Limited production runs are sometimes produced on a manually-operated ____ lathe.

turret

The most accurate way to offset the tailstock center is to ____.

use a dial indicator

Work that is too large or too heavy to be turned in a horizontal position is machined on a(n) ____ machine.

vertical boring

Tailstock offset can be determined visually by measuring the distance between the center points, or between the ____ on the base of the tailstock.

witness lines

The size hole to be bored determines the ____.

All of the above; front clearance on the cutting tool, type and size boring bar required, and depth of cuts

Lead

Distance a nut will travel

"Spark out" is a term associated with grinding on the lathe and means ____.

a point where the grinding wheel is moved back and forth across the work until it no longer cuts

The ____ permits traverse tool movement.

cross-slide

A ____ (high/low) spindle speed is used for polishing.

high

When cutting tapered threads to obtain a fluid- or gas-tight joint, the threading tool must be positioned ____.

in relation to the centerline of the taper

The steady rest is bolted directly to the ____.

ways

Lathe filing is not intended to ____.

All of the above; replace a dull cutting tool, repair a surface made by a dull cutting tool, and improve the surface finish

The follower rest bolts to the ____.

Carriage

Minor Diameter

Smallest diameter of the thread.

A grinding wheel must be ____ and run true if a smooth, accurately sized job is to be obtained.

balanced

When moved, the variable speed control will ____.

change spindle speed

The ____ provides support directly in back of the cutting tool and moves along the cut.

follower rest