Chapter 14 + 15 Multiple Choice

Drills over ____ in diameter require a pilot hole.

1/2"

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

4-jaw independent

A ____ is seldom used on modern lathes.

threaded spindle nose

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

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 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

Cutter bits are ground to cut ____.

It depends on the tool

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

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

can be reversed

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

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

eccentric

If the cutting speed is too slow, ____.

extra time will be needed to complete the job

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

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

in opposite directions

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 lathe operates on the principle ____.

of the work revolving against the controllable cutting tool

Lathe size is determined by the ____.

swing and length of the bed

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

"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

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

engaging back gear

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

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 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

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

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

When boring on a lathe, ____.

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

The jaws on a 3-jaw universal chuck ____.

cannot be reversed to hold larger diameter work

When moved, the variable speed control will ____.

change spindle speed

A boring bar is positioned ____ for machining.

on center

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

reducing tool overhang

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

rotate the work against a controllable cutting tool

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