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Final Review mach 116 Flashcards | StudBud
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Final Review mach 116
Final Review mach 116
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1
Basic milling machines have two axes of movement.
True
False
2
Controls the operation of power feeds
Lathe Bed
Spindle
Quick change gearbox
Half nut
3
A grinding wheel will
not
cut efficiently if it is ____.
out-of-round
All of the above
glazed
loaded
4
Machine ______________________________ are employed to assemble parts that do not require close tolerances.
Screws
Bolts
Locating Pins
Nails
5
The ____________spindle nose has a short taper that fits into a tapered recess in the back of work-holding attachments.
Vise
Grooved
Cam-lock
Tapered locking pin
6
Engaged for thread cutting.
Quick change gearbox
Spindle
Half nut
Lathe Bed
7
The lead screw transmits power from the quick change gear box to the ____.
None of the above
headstock
back gears
tailstock
8
The level of operator training required for turret lathes is higher than for gang-tool lathes.
False
True
9
A subassembly drawing differs from an assembly drawing by ____.
showing only a small portion of the complete object
None of the below
showing the object without all needed dimensions
making it possible to use smaller drawings
10
A roughing taper reamer has left-hand spiral grooves ground into the cutting edge to ____.
speed up the removal of metal
All of the above.
remove surplus metal before finishing with a standard taper reamer
break up the chips
11
The biggest disadvantage of vertical milling centers is their ____.
limited axes of rotation
precision
speed
cost
12
A universal milling machine's worktable can be moved in ____ directions.
six
three
two
four
13
The biggest disadvantage of using CNC is the rate at which parts are produced.
False
True
14
A(n) ______________________________ dimension is a dimension used for information only.
Reference
Basic
Orientation
Actual
15
External ragged threads are usually caused by ____.
All of the above.
too little or no cutting fluid
dull die cutters
stock too large for the threads being cut
16
List the major advantages of abrasive belt grinding.
All of the above
Generates little heat and produces a clean-cut surface finish
Inexpensive way to clean and prepare surfaces
Machine can be converted quickly from heavy stock removal to finishing
17
When sawing, three or more teeth should be cutting at all times; otherwise ____.
greater pressure will be required to make the blade cut
the teeth will straddle the section being cut and snap off
the teeth will clog with chips
All of the above
18
A vernier protractor can measure an angle with an accuracy of ______________________________ of a degree.
1/8
1/12
1/2
1/4
19
The jaws on a 3-jaw universal chuck ____.
can be reversed to hold larger diameter work
can only be reversed on some chuck designs
None of the above.
cannot be reversed to hold larger diameter work
20
Avoid using compressed air to clean chips from machine tools because ____.
All of the above
it could create a dangerous mist that might be injurious to your health
flying chips may cause eye injuries
it can create a dangerous environmental situation
21
Of what use are machine shields?
In case the workpiece flys out
So you don;t need to wear safety glasses
Looks Cool,like you know what your doing
Protection from chips and coolants ,cutting fluids
22
The metric-based micrometer is capable of measuring accurately to ____.
0.0001 mm
None of the above.
0.0002 mm
0.002 mm
23
A CNC machine should have
no
backlash to ensure precise positioning. .
False
True
24
Irregular scratches, of no identifiable pattern, on a ground surface are frequently caused by ____.
not allowing the machine to “warm” up
All of the above.
an unbalanced grinding wheel
a dirty coolant system
25
Cutters with high abrasion resistance ____.
All of the above.
do not rapidly break down during machining
cutting edges that do not wear rapidly due to the abrasive materials
not affected by the terrific heat that can be generated during machining
26
Tongue and groove pliers ____.
capable of gripping different size work
All of the above.
are made in many different sizes
have jaws that can be expanded to grip larger size work
27
With conventional or up-milling, the work ____.
None of the above
has full engagement of the cutter tooth
is fed into the rotating cutter
moves in the same direction as cutter rotation
28
Foundation of the lathe
Quick change gearbox
Lathe Bed
Headstock
Spindle
29
When an operator cycles a machine’s programs without a part in place, it is called a(n) ______________________________.
Dry Cycle
Sample run
Wet run
Practice cycle
30
An open-loop system provides feedback to the control using an encoder.
False
True
31
When reaming a hole with a keyway or other interruption, use a(n) ____.
expansion reamer
straight fluted reamer
spiral fluted reamer
spiral fluted reamer
32
___refers to the distance, measured in feet or meters, that a tooth) on the circumference of cutter moves in one minute.
Feed
Cutting Speed
Thread Cutting
RPM
33
Assembly and ____________________drawings provide the information necessary to correctly fit the various parts together.
orthopedic
Detail
Subassembly
3D
34
Contains the saddle and cross slide
Lathe Bed
Carriage
Index Plate
Quick change gearbox
35
If the cutting speed is too high, ____.
a lighter cut will have to be made
the cutting tool will dull rapidly
less time will be needed to complete the job
All of the above.
36
To get the best cutting performance, a cutter bit must have a keen, properly shaped ______________________________.
Cutting Edge
Back cut
Nose
Primary edge
37
Transmits power through train of gears
Lead screw
Feed mechanism
Back Gears
Quick change gearbox
38
Milling feed is the ____.
distance a tooth on the cutter circumference moves in one minute
None of the above.
width and depth of the cut
rate at which work moves into the cutter
39
The term
hand
is used with end mills to describe ____.
direction the machine is run
cutter size
None of the above
cutter rotation and helix of the flutes
40
Most offhand grinding accidents are caused by ____.
watching people using the grinder
using the machine without permission
All of the above.
carelessness
41
When facing stock, a rounded “nubbin” of face material results if the cutting tool is ____.
dull
None of the above
slightly below center
slightly above center
42
An operator should
not
remove bypass guards on a CNC machine.
True
False
43
The blade should be installed on a hacksaw so it will cut ______________________________ on the stroke.
Backwards
Both directions
Forward
Depends on materials
44
Contains the dead center and supports the outer end of the work.
Spindle
Tailstock
Quick change gearbox
Headstock
45
____ devised and patented a measuring tool that made use of a screw thread.
Jean Palmer
Bob Hope
Micheal Jackson
Henry Maudslay
46
The ______________________________ table can be used to machine circular slots.
Angle vise
Rotary
Cross-slide vise
Vise
47
Handbook, available in published formats ,Internet, describes many specific job and estimates the future demand jobs
Occupational Outlook Handbook
Fullerton College outlook
L.A Times
Machinist Handbook
48
Large circles and arcs are drawn on a layout with a(n) ____.
None of the above
divider
trammel
compass
49
To obtain maximum efficiency from an offhand grinder, ____.
All of the above.
dress the wheel a minimum of once a week
dress the wheel several times a month
use the face of the wheel, not the side
50
Name two different types of adjustable wrenches.
Square
Pipe
adjustable
Monkey
51
The measured size of a part after manufacture is known as ______________________________ size.
Reference
Excatly
Basic
Actual
52
Regulates the distance of tool travel per spindle revolution
Carriage
Lead screw
Feed mechanism
Quick change gearbox
53
A wet-type pedestal grinder ____.
requires that the part be dipped in water
D.None of the above.
keeps the wheels constantly flooded with fluid
has no provisions for cooling the work
54
Various workholding attachments are fitted to it.
Tailstock
Quick change gearbox
Spindle
Headstock
55
Cutter bits are ground to cut ____.
to the left only
It depends on the tool
to the right only
in either direction
56
The ____ is similar to the square key but is rounded at both ends and fits into the keyseat of the same shape.
Focus Keyway
gib head key
Pratt & Whitney key
Woodruff key
57
Name
the two
categories
of
surface grinding
machines
Planer-type and rotary-type
Wet or Dry grinding
All of the above
Vertical and Horizontal
58
There are several times when it is important that you
not
operate a machine tool. List two of them.
Hard night out
Impaired by medicztion
After eating Pizza
Safety guards and devices missing
59
The dial caliper is a ____.
modern version of the vernier caliper
None of the above.
vernier type tool
direct reading measuring tool
60
The symbols, lines, and figures that make up a drawing are frequently called the ____.
The language of industry
Work of engineers
Detail, assembly, and subassembly drawings
None of the above
61
Never operate a machine tool until you have received proper ______________________________ on its safe operation.
Premission
instructions
Clearance
Friends advise
62
A toolmaker's universal vise ____.
None of the above.
permits compound or double angles to be cut
can only be mounted parallel to or at right angles to the spindle
can be locked at any angle to the spindle
63
Indicates how to position levers for cutting various pitch thread and feed.
Half nut
Lathe Bed
Quick change gearbox
Index Plate
64
A ____ chuck can hold irregular shape work as each jaw has individual movement.
4-jaw independent
3-jaw universal
Jacobs
All of the above.
65
How can long stock, mounted in a chuck, be prevented from springing away from the cutting tool while being turned?
Center drilled and supported by the tailstock center
4 jaw chuck
Using a sharper Cutting tool
Holding it in the drill chuck
66
Work held in a vise can be protected from damage by the jaw serrations if _______________are placed over the jaws.
Caps
Rag
Plastic covers
Soft rubber inserts
67
Name at least three types of work-holding devices used to hold work for surface grinding.
Machine vise, Rotary table
Magnetic chuck,indexing Heasd with centers ,precision vise
Chuck, and a reciprocating or rotary table
68
Safety glasses should be worn ____.
The entire time you are in the shop
Only when working on machines
Most of the time
Only when instructed
69
Drill rods are steel rods used to inspect hole ____.
diameter
All of the above.
location
alignment
70
Transmits power to the carriage through a gearing and clutch arrangement.
Carriage
Lead screw
Index Plate
Quick change gearbox
71
Drawings are used to ____.
All of the above.
Show, in multiview, what an object looks like before it is made
Standardize parts
show what to make and the sizes to make it
72
Plier size indicates the ____.
width of the gripping area
All of the above
maximum jaw opening
overall length of the tool
73
The vernier scale has ____ parallel lines that occupy the same space as ____ lines on the thimble.
6, 5
5, 6
11, 10
10,11
74
__ wheel into the cutter, common mistake when grinding cutters , the lack of sparks creates the cut being made to light
Deep
Shallow
Creep grinding
Crowding
75
The main advantage of a Swiss-type turning center is that its guide bushing diameter is adjustable.
True
False
76
Why should all rough and finish turning be made toward the headstock (right to left)?
none of the above
The pressure toolbit cutting the material is better supported by headstock
Works either direction
Depends on a l/H cutting tool vs a R/H cutting tool
77
In general, cutting speed is reduced for ____.
soft materials
better finishes
hard or abrasive materials
D.All of the above.
78
A computer controlled milling machine with a horizontally mounted spindle and an automatic tool changer is called a____
Horizontal machining center
Bridgeport
Vertical Machining center
Surface Grinder
79
Creep grinding is also known as ______________________________ grinding.
Crowding
Shallow
Deep
Square
80
A CNC machine should have
no
backlash to ensure precise positioning. .
True
False
81
The _________ring has been developed for both internal and external applications. The grooves needed to install them e
Engagement
Spring Circlip
Retaining
Washer
82
Before changing tools manually, wait for the machine axes to come to a complete stop.
True
False
83
Used to obtain slower spindle speeds on belt driven lathes.
Lead screw
Quick change gearbox
Feed mechanism
Back Gears
84
If a lathe dog binds on the faceplate slot, the piece being turned will ____.
not be concentric with the center hole
all of the above
be pulled off-center
be eccentric with the center hole
85
Gang-tool lathes are capable of producing more parts per hour than basic CNC lathes.
True
False
86
A toolmaker's vise can ____.
hold small precision parts
be tilted to any desired position
be rotated to any desired position
All of the above
87
What are the four general types of cold chisels?
1,2,3,round series
bench chisel, firmer chisel, mortise chisel, paring chisel
None of the above
flat chisel, cape chisel, round-nose chisel, and diamond point chisel
88
Plain milling cutters have ____ teeth.
staggered
straight
helical
None of the above
89
A surface gage can be used to ____.
check angular surfaces
check whether a part's surface is parallel with a given surface
None of the above.
make fine layout adjustments
90
Cutting speed is increased for ____.
soft materials
All of the above.
light cuts
better finishes
91
______________________________ is the operation of cutting off material after it has been machined.
Drilling
Milling
Turning
Facing
92
When facing stock, a square shoulder “nubbin” of face material results if the cutting tool is ____.
slightly below center
None of the above
dull
slightly above center
93
Contains the spindle.
Headstock
Tailstock
Quick change gearbox
Spindle
94
A(n) ______________________________ in the base of a surface gage permits the tool to be used on a curved surface.
V-slot
Half Moon slot
Magent
Granite
95
Automated tool changers are usually powered hydraulically.
True
False
96
Which of the following advantages do adhesive bonded assemblies offer?
All of the above.
They do not require costly machining operations.
surfaces are smooth with no projections from rivets, bolt heads, or nuts.
There is continuous contact between the material surfaces.
97
Wheel glazing or loading can be caused by ____.
a grinding wheel that is incorrectly mounted
the wrong coolant being used
All of the above
a loose grinding wheel
98
Abrasives should not be used to polish ______________________________ surfaces
Outside surfaces only
internal only
Flat Surfaces
Machined
99
The screw thread on a micrometer is ground on the ____ and attached to the thimble.
spindle
fixed nut
anvil
None of the above
100
Offhand grinding is so named because:
Work is too hard to be machined by other methods.
Work is manipulated with fingers until desired shape is obtained.
None of the above.
It can only do external work.