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CNC Machinist > Blueprint Reading > Flashcards

Blueprint Reading Flashcards

1
Q

Define “CAD Drawing”

A

A drawing made by computer-aided methods

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2
Q

Define “Reference Dimension”

A

A dimension used only for information, not for production or inspection

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3
Q

Define “Quenching”

A

The Cooling of metals rapidly by immersing them in a liquid

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4
Q

Define “Extension Spring”

A

A spring designed to supply force when pulled end to end

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5
Q

Define “Datum”

A

A point, line, plane or surface where other features are located

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6
Q

Define “Face”

A

A flat surface perpendicular to the axis, such as the end of a shaft

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7
Q

Define “Flange”

A

A projecting rim or collar used to attach to another object

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8
Q

Define “Clearance Hole”

A

A hole slightly larger than the fastener intended to pass through it

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9
Q

Define “Pinion”

A

The smaller of two mating gears

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10
Q

Define “Shim”

A

A thin piece of metal inserted between two parts to adjust the fit

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11
Q

Define “Arbor”

A

A shaft or spindle for holding the cutting tool or workpiece

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12
Q

Define “Gauge”

A

The thickness of sheet metal by a number rather than a dimension

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13
Q

Define “Tangent”

A

A line drawn to an arc that contacts the arc at one point only, without crossing

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14
Q

Define “Perpendicular”

A

Two lines or planes that are at right angles to one another

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15
Q

Define “Parallel”

A

Two lines equidistant from each other, extending in the same direction

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16
Q

Define “Tap”

A

A tool used for cutting internal threads in a hole

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17
Q

Define “Bilateral”

A

The term that means two sides are involved

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18
Q

Define “Radii”

A

The plural of “Radius”

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19
Q

Define “Broach”

A

A machining operation that uses a toothed cutting tool to produce shapes inside of a hole, such as a keyway.

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20
Q

Define “Spotface”

A

A machining operation that produces a round, flat spot around a hole.

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21
Q

What does SF stand for?

A

Spotface

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22
Q

Define “Counterbore”

A

A machining operation that enlarges the end of a hole cylindrically to a specified diameter and depth

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23
Q

Define “Countersink”

A

A machining operation that produces a cone-shaped end to a hole, usually to accept a flat-head fastener

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24
Q

Define “Tolerance”

A

The permissible variation from a specified dimension

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25
Q

Define “Limits”

A

The maximum and minimum permissible dimensions

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26
Q

Define “Die”

A

A tool used for cutting external threads

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27
Q

Define “Coaxiality”

A

Cylindrical surfaces that are equally centered about a common axis

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28
Q

Define “Symmetrical”

A

Equal halves. The same shape on both sides of a common centerline.

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29
Q

Define “Bolt Circle”

A

A circular centerline upon which two or more hole centers are located

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30
Q

Define “Casting”

A

An object made by pouring molten metal into a mold

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31
Q

Define “Pattern”

A

A model of the part to be cast. Used to create a cavity in the sand

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32
Q

Define “Fillet”

A

An interior radius (Concave) between intersecting surfaces of an object

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33
Q

Define “Boss”

A

A circular, raised portion around a hole in a casting or a forging

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34
Q

Define “Ferrous”

A

Metals that contain iron as their base material, such as steel

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35
Q

Define “Nonferrous”

A

Metals without iron content, such as brass, copper, or aluminum

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36
Q

Define “Taper”

A

Conical shape that permit a shaft or a hole to become gradually smaller from one end to the other

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37
Q

Define “Chamfer”

A

To remove a small amount of material from the end of a shaft or hole to facilitate assembly

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38
Q

Define “Keyseat”

A

A groove in a shaft to position a key

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39
Q

Define “Neck”

A

An external groove at a change in diameter of a shaft, usually for another part to fit against its shoulder

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40
Q

Define “Included Angle”

A

The term used to define the angle formed between one side and another

41
Q

Define “Allowance”

A

The minimum clearance (or maximum interference) between two mating parts, such as a shaft and a hole

42
Q

What does “CI” stand for?

43
Q

What does “CRS” stand for?

A

Cold-Rolled Steel

44
Q

What does “CBORE” stand for?

A

Counterbore

45
Q

What does “CSK” stand for?

A

Countersink

46
Q

What does “DIA” stand for?

47
Q

What do “DR” stand for?

A

Drill/Drill Rod

48
Q

What do “FIL” stand for?

A

Fillet/Fillister

49
Q

What does “FAO” stand for?

A

Finish All Over

50
Q

What do “GA” stand for?

A

Gage/Gauge

51
Q

What does “HRS” stand for?

A

Hot-Rolled Steel

52
Q

What does “ID” stand for?

A

Inside Diameter

53
Q

What does “LH” stand for?

54
Q

What does “MATL” stand for?

55
Q

What does “MAX” stand for?

56
Q

What does “OD” stand for?

A

Outside Diameter

57
Q

What does “SECT” stand for?

58
Q

What does “STL” stand for?

59
Q

What does “THK” stand for?

60
Q

What does “THD” stand for?

61
Q

What does “TOL” stand for?

62
Q

What does “BC” stand for?

A

Bolt Circle

63
Q

What does “BHN” stand for?

A

Brinell Hardness Number

64
Q

What does “CHAM” stand for?

65
Q

What does “CDS” stand for?

A

Cold-Drawn Steel

66
Q

What does “DIM” stand for?

67
Q

What does “FIN” stand for?

68
Q

What does “GRD” stand for?

69
Q

What does “HT TR” stand for?

A

Heat Treat

70
Q

What do “LG” stand for?

A

Length/Long

71
Q

What does “MI” stand for?

A

Malleable Iron

72
Q

What do “MIN” stand for?

A

Minimum/Minute

73
Q

What does “NTS” stand for?

A

Not To Scale

74
Q

What do “PC” stand for?

A

Piece/Pitch Circle

75
Q

What does “RM” stand for?

76
Q

What does “REF” stand for?

77
Q

What does “RND” stand for?

78
Q

What does “SCR” stand for?

79
Q

What does “SPEC” stand for?

A

Specification

80
Q

What does “SYM” stand for?

A

Symmetrical

81
Q

What does “TYP” stand for?

82
Q

What kind of line shows the outline of the object?

83
Q

What kind of line indicates the place where the removed area is viewed?

A

Viewing-Plane

84
Q

What kind of line points diagonally to an area or a feature?

85
Q

What kind of line represents a surface not visible in the view drawn?

86
Q

What kind of line shows an alternate position of the movable arm?

87
Q

What kind of line terminates with arrowheads and encloses a dimension figure?

88
Q

What kind of line extends the visible line for the purpose of dimensioning to it?

89
Q

What kind of line indicates where the section is cut?

A

Cutting-Plane

90
Q

What kind of line shows the axis of symmetrical parts and the arm’s path of motion?

91
Q

What kind of line permits the use of a partial view to conserve space and avoid congestion?

92
Q

What kind of line represents the exposed surface of a sectioned feature?

93
Q

Which five line types are drawn thick?

A

Visible, Cutting-Plane, Viewing-Plane, Short Break, Chain

94
Q

Which six line types include short dashes?

A

Hidden, Center, Cutting-Plane, Viewing-Plane, Phantom, Chain

95
Q

Which four line types include arrowheads?

A

Dimension, Leader, Cutting-Plane, Viewing-Plane

96
Q

What is the physical difference between the Viewing-Plane Line and the Cutting-Plane Line?

A

Cutting-Plane cuts objects, Viewing-Plane views objects

97
Q

What type of note applies to an entire drawing?

98
Q

What type of line is used with local notes?

99
Q

Where do general notes usually appear on a drawing?

A

Above the title block

CNC Machinist (4 decks)

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