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Term 3 > Millwright > Flashcards

Millwright Flashcards

1
Q

Taper in a bore of milling machine

A

Standard steep machine taper

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2
Q

Does the table swivel on universal horizontal mill

A

Fuck yes

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3
Q

What could be used in a heavy duty collet

A

Threaded shank end mill

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4
Q

Faction size 1/16- 4
Number size 97-1
Letter size A-Z
Metric size0.04 to 80mm

A
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5
Q

General purpose drilling

A

118

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6
Q

Soft material

A

60-90

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7
Q

Hard material

A

150

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8
Q

Follower rest

A

Keeps workpiece from deflection away from cutting tool, by supporting the immediate area of cut

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9
Q

Gib key taper

A

1/8 tpf

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10
Q

ANSI taper

A

3.5 tpf

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11
Q

Jacob’s taper

A

0.591 to .979

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12
Q

How does the apron hand wheel move the carriage.

A

Rack and pinion

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13
Q

3 auxiliary stops

A

Parreles, jack screws, table stop block

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14
Q

Set screw to bit

A

Weldon

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15
Q

Milling machine will

A

Except Morris taper into spindle

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16
Q

Stop block

A

Keep work peice from shifting under high pressure

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17
Q

Center drill angle

A

60

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18
Q

Step drill bits

A

Drill and bore

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19
Q

Pilot hole

A

From 3/4 and up

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20
Q

Core drill

A

Used to enlarge hole

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21
Q

Power hacksaw blades compared to hand

A

Thicker and wider, 12-40 inch and 5/8 to 2.5 in width

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22
Q

Two types of power hacksaw blades

A

Fully hardened blades, and bimetal blades

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23
Q

Fully hardened blades,

A

These blades are good for material such as stainless steel these blades withstand heavy feed pressures for faster cutting than other types of hacksaw blades

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24
Q

bi-metal blades

A

High-speed steel tooth edge with a tough alloy steel back,

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25
Q

Toughness

A

Toughness refers to the resistance to fracture or the amount of energy a substance absorbs before it breaks

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26
Q

Hardness

A

Hardness is the ability of a material to resist penetration

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27
Q

Malleability

A

A material can be shaped or Moulded easy

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28
Q

Locking type pins

A

Quick release lock pin and spring locking pin ( hair pin)

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29
Q

Pratt and Whitney key

A

Used when a hub slides back and forth on the shaft and are usually attached with screws or buring The hub

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30
Q

Jam nuts

A

Thinner than a regular hex nut and are paired with hex nuts to lock them into position

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31
Q

Prevailing torque nuts

A

Have a deformed or crimped thread at the top of the crown that provides the locking Force against The mating thread

32
Q

Flange lock nuts

A

Have a built-in external washer

33
Q

Belt grinder

A

Used for polishing and grinding, the width of the belt ranges from a quarter inch to 26 in, great for quickly to buring and chamfering a work piece

34
Q

Aluminum oxide

A

Gray, light gray and white

35
Q

Silicone carbide green

A

Green silicone carbide wheels are used to grind cemented carbide ceramics and other hard materials

36
Q

Black silicone carbide

A

Used to grind cast iron and non-ferrous metals, like brass copper and aluminum

37
Q

Disc bonds

A

Vitrified, resinoid, and rubber

38
Q

Vitrified

A

Designated by the letter v, this bond is used for 50% of all Wheels produced, it is made of clay. 6500

39
Q

Resinoid

A

Designated by the letter b it is used for 33% of all Wheels produced, 9500 -1600 rpm

40
Q

Rubber

A

Designated by the letter R, it is made by vulcanizing a mixture of grain crude rubber and sulfur, it’s good up to 16,000 RPM

41
Q

Power load types

A

22 caliber 25 and 27

42
Q

Power load with a crimped end

A

Low velocity tools

43
Q

Power load identification

A

Number one, is gray number two, is brown number three, is green number four, is yellow number 5, is red number 6, is purple

44
Q

Do you need good ventilation for operating an explosive tool

A

Fuck yes

45
Q

What is the transverse vial on a Master precision level 4

A

It’s not as sensitive as the main vial it’s to see if the level is positioned correctly

46
Q

Bench and Carpenters level

A

Good to 0.1 of a degree or .020 of an inch per foot

47
Q

What grout mixtures tend to shrink

A

Homemade

48
Q

Formula for leveling a base

A

X = shim reading * a/b

49
Q

Types of couplings

A

Rigid, flexible and special purpose

50
Q

Types of special shims

A

Step shims elastomer shims

51
Q

Elastomer setup

A

Sandwiched between a metal shim

52
Q

Horizontal moves

A

Positive readings are toward the datum, and negative readings are away from the datum

53
Q

The four types of steel rule

A

Spring tempered rule, flexible rule, narrow rule, hook rule

54
Q

What is a basic measurement

A

1/64 or 0.5 mm

55
Q

Measuring tape markings

A

Foot/inch, metric and continuous inch and metric

56
Q

Nominal size

A

Is the purpose of general identification

57
Q

Actual size

A

The size after it’s being measured

58
Q

Basic size

A

The theoretical size which tolerances are applied, basic size can refer to both mating parts

59
Q

Limit of size

A

Limited size is the largest upper limit and the smallest lower limit a part can be and still be acceptable

60
Q

Maximum metal condition

A

Smallest hole and largest shaft

61
Q

Least metal condition

A

Largest hole smallest shaft

62
Q

What is tolerance

A

Tolerance is the total amount of variation permitted in the size of duplicate parts

63
Q

Limit dimension

A

Only maximum and minimum dimensions of the part are specified

64
Q

Allowance

A

The intentional difference between two mating parts at maximum metal condition

65
Q

Positive and negative allowances

A

A positive allowance is when the whole is larger than the shaft, a negative allowance the hole is smaller than the shaft

66
Q

What do you need to do when dressing turning or balancing any grinding wheels

A

Wear a respirator or dust mask at all times

67
Q

What is on a blotter wheel

A

Max rpm, size of wheel, type of wheel

68
Q

Side wheel grinder

A

Same as bench and pedestal grinders except the side of the wheel is used for grinding instead of the face, usually with silicone carbide grinding wheel for sharpening carbide tool

69
Q

What is a tool rest for on a grinder

A

It is slightly above the center, and it is to provide for resting the work piece on

70
Q

What should you always do before installing a wheel on a grinder

A

F**** ring test it

71
Q

What grit is courser on grinding wheel 46 or 60 grit

A

46

72
Q

When would you use a diamond dresser

A

When a very fine finish is required

73
Q

On a pedestal grinder the gap between the grinding wheel and the workrest should not exceed

A

1/8

74
Q

What is the thread

A

The helical ridge that runs around the cylinder or cone

75
Q

Thread profile

A

The view of the thread when the bolt or nut is cut in half lengthwise along its axis

76
Q

Minor diameter

A

The smallest diameter of a screw thread, on an external thread it is measured across the root of the thread, on an internal thread it is the inside diameter

77
Q

The crest

A

Term 3 (5 decks)

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