unit 1,5,6,,7,8 Flashcards

1
Q

two types of arbor presses

A

hydralic and mechanical

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2
Q

bushings should be lubricated with high pressure lube before pressed into a bore no oil

A

true

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3
Q

the bore should always have a ?

A

chamfer

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4
Q

when working with bolster plate minimum pressure otherwise damage will be done

A

true

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5
Q

keyseat:

A

it is helpful to chamfer the leading end so it aligns

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6
Q

the mandrel is tapered about?

A

0.006 inch per ft

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7
Q
A
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8
Q

broaching atleast 2 or 3 have to be in contact

A

true

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8
Q

two important things in broaching

A

alignment and lubrication

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8
Q

never use a broach on material

A

harder then rockwell c35

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9
Q

most common tapers

A

morse taper and taper pin reamers

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10
Q

morse taper is

A

5/8 inch

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11
Q

dies are made in

A

1 1/2 inch

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12
Q

button dies are used in diestock for hand threading or in a machine holder for machine threading

A

true

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13
Q

collets are held securly in die stocks by a

A

knurled screw that seats in a dimple cap

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14
Q

hand threading needs

A

cutting oil or other threading fluids are important obtaining quality threads and long life

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15
Q

go gauge should on the thread

A

no go will not go more then 1 1/2 turns

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16
Q

a lathe can be used as a fixture

A

for cutting threads with a die

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17
Q

it is good practice to chamfer

A

the end of the workpeice before cutting a die

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18
Q

when cutting threads with a hand die

A

reverse rotation after each full turn to break chips

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19
Q

die is used to cut

A

external threads

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20
Q

dies are made from

A

high speed steel

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21
Q

button dies are made in diameter

A

of 1 1/2 inch and pipe of 1.2 inch

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22
Q

collets are held securley in diestocks

A

by a knurled screw that seats in a dimple cap

23
hexagon rethreading dies are used for
fixing slightly damaged or rusty threads
24
cutting oil or other threading fluids are
used in obtaining good thread
25
outside material to be threaded is 0.002 to 0.005 inch
true
26
when cutting threads with a hand die
reverse the die after full turn to break the chips
27
tap drill charts usually give ntap drill sizes to
75 perfecnt thread
28
rule of thumb is to have a bolt engage a tapped hole by 1 to 1 1/2 times it diameter
true
29
dull taps produce
rough torn or offsize threads
30
lubrication is one of the most important factors in tapping process
true
31
turn tap clockwise one quater to one half turn then it back three quater of a turn to break chips
true
32
taps are used to interna; threads in holes
true
33
the active cutting part of the tap is
chamfer
34
what are common taps 2,3,4 are common
true
35
the # 1 tap has smaller major and pitch diameter and is used for rough cutting threads
trueq
36
#2 taps cut the thread slighty deeper
true
37
#3 tap finishes it size
true
38
serial taps are for
tapping tough metals by hand such as stainless steel
39
spiral points taps
can be operated at high speeds and require less torque to drive
40
spiral fluted taps are used for tapping blinds holes
in ductile material such as aluminum magnesium brass copper and die cast
41
tapered tap pipe taper is
3/4 inch per foot for pipes
42
reducing friction with taps
liquid nitride produces a hard shallow surface
43
oxide treatments prevent
chips from welding to the tool and reduce friction between the tool and work
44
chrome plating is
effective on non ferrous and some soft steels
45
hand reamers are designed to remove small ammounts of material
usally 0.001 to 0.005 inch
46
hand reamers are made from
high speed steel
47
hand reamers are back tapered
0.0005 to 0.001 inch
48
3 types of hand reamers
morse taper, straight flute and helicial flute hand reamer
49
the three hand taps in a set
taper, plug and bottoming
50
if a high speed steel hand tap breaks one way to remove it is
with an eleltric discharge machine
50
choose the correct tool to turn a die
die handle
51
the cuttion action of a hand broach is preformed by a series of succesive teeth each protruding
0.003 inch further then proceding tooth
52
pullers are used
to remove bearings hubs and sprockets
53
when using a puller or press and removing a bearing from a shaft what would you do
before removing a bearing or hub from a shaft puller inspect and clean the shaft area
54
the perfered stock allowance for hand reaming is between 0.001 to 0.005 inch
true
54