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Blue Print Reading For The Machine Trades

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Title: Blue Print Reading For The Machine Trades


1
Blue Print Reading For The Machine Trades
  • Unit 1
  • Dictionary Of Terms

2
Dictionary Of Terms
  • Abrasive
  • A material used to cut other materials softer
    than itself.

3
Dictionary Of Terms
  • Allowance
  • Minimum clearance
  • Or maximum interference
  • Occurs between two mating parts-e.g.. a shaft and
    a hole

4
Dictionary Of Terms
  • Alloy
  • Mixture of two or more elements
  • One is metallic
  • Melt together to form new material

5
Dictionary Of Terms
  • Angular dimension
  • Dimension measured using
  • Degrees
  • Minutes
  • Seconds

6
Dictionary Of Terms
  • Anneal
  • Heat treat process
  • Cool heated material slowly
  • Removes stresses
  • Reduces hardness

7
Dictionary Of Terms
  • Arbor
  • Shaft that cutting tool is mounted on
  • Spindle that holds a workpiece

8
Dictionary Of Terms
  • Assembly drawing
  • Drawing that shows relationship of components
    that fit together

9
Dictionary Of Terms
  • Auxiliary view
  • Orthographic view projected angularly
  • Shows features appearing on inclined surfaces
  • Shows features appearing on oblique surfaces

10
Dictionary Of Terms
  • Axis
  • Central line about which parts are arranged
  • Elements may or may not revolve around it

11
Dictionary Of Terms
  • Baseline dimensioning
  • System of dimensioning used to locate features of
    a part-e.g. holes
  • Uses a common set of datums

12
Dictionary Of Terms
  • Basic dimension
  • Exact value of a feature-no tolerance is used
  • Describes the following
  • Size
  • Location

13
Dictionary Of Terms
  • Basic size
  • Exact theoretical size
  • Limits of size are derived from them by
  • Application of allowances
  • Application of tolerances

14
Dictionary Of Terms
  • Bevel
  • Flat, slanted surface between two other surfaces
  • Surfaces are at right angles to one another

15
Dictionary Of Terms
  • Bilateral
  • Bi means two
  • Indicates that two sides are used
  • E.g.---bilateral tolerances

16
Dictionary Of Terms
  • Blind hole
  • Hole that does not go through all of the
    material
  • Common in thick parts

17
Dictionary Of Terms
  • Bolt circle
  • Circular centerline
  • Two or more hole centers are located on it

18
Dictionary Of Terms
  • Bore
  • Process to enlarge a hole to an accurate size
  • Held to close tolerances
  • Usually specified with limit dimensions

19
Dictionary Of Terms
  • Boss
  • Raised cylindrical projection-always circular
  • Provides extra metal around a hole in casting or
    forging
  • Similar to a pad-pad may be any other
    shape-function is same-provide more material

20
Dictionary Of Terms
  • Broach
  • Process to produce desired shape in cylindrical
    hole
  • Keyway
  • Hex shape

21
Dictionary Of Terms
  • Broach
  • Broaching tool
  • Series of teeth
  • Gradually increasing in size
  • Cutting is done as tool is pushed or pulled
    through hole

22
Dictionary Of Terms
  • Burnish
  • Finish or polish metal
  • Roll or slide a tool over the surface under
    pressure

23
Dictionary Of Terms
  • Burr
  • Jagged edge of metal produced by working the
    metal
  • Common note of blueprints is to remove all burrs

24
Dictionary Of Terms
  • Bushing
  • Replaceable insert
  • Provide metal with better wearing quality

25
Dictionary Of Terms
  • CAD drawing
  • Drawing created by computer-aided drafting
    methods
  • Electronically stored, revised and retrieved

26
Dictionary Of Terms
  • Cam
  • Mechanical device used to change rotary motion to
    some other motion
  • Reciprocating or sliding

27
Dictionary Of Terms
  • Carburize (CARB.)
  • Heat low-carbon steel to temperature below its
    melting point
  • Heated in carbonaceous solids, liquids, or gases
    to raise level of carbon on outside surfaces
  • Cooled slowly

28
Dictionary Of Terms
  • Case hardening
  • Hardening of ferrous alloy
  • Surface layer is harder than the interior core

29
Dictionary Of Terms
  • Casting
  • Metal object-e.g.-cast iron, cast aluminum
  • Pour molten metal into a mold

30
Dictionary Of Terms
  • Chain dimensioning
  • Successive dimensions extend from one feature to
    another
  • Each dimension does not have to originate from a
    datum
  • Tolerances accumulate with a chain dimension

31
Dictionary Of Terms
  • Chamfer
  • Corner removed from end of cylindrical surface
  • At an angle to face
  • Used to facilitate assembly

32
Dictionary Of Terms
  • Clearance hole
  • Hole slightly larger than bolt or fastener
  • Bolt or fastener passes through it freely
  • Permits easy assembly

33
Dictionary Of Terms
  • Coaxiality
  • Exists when two or more cylindrical features have
    a common axis
  • Two diameters on a shaft
  • Bore in a round part

34
Dictionary Of Terms
  • Collar
  • Projecting ring around a shaft
  • Can be used to locate components on an arbor

35
Dictionary Of Terms
  • Concentricity
  • Condition where median points of a features
    diametrically opposed elements are located within
    a cylindrical zone
  • Cylindrical zone is equally centered about a
    datum axis

36
Dictionary Of Terms
  • Core
  • Part of a mold
  • Shapes the interior of a casting
  • Sand is major component

37
Dictionary Of Terms
  • Counterbore
  • Process to enlarge a hole cylindrically at the
    end
  • Drawing specification includes
  • Diameter
  • Depth of enlarged section

38
Dictionary Of Terms
  • Countersink
  • Process to enlarge a hole conically at end
  • Accept a flathead fastener
  • Drawing specifications will include its diameter
    and included angle

39
Dictionary Of Terms
  • Datum
  • Location of other features is established using
    them
  • A datum can be
  • A point
  • A line
  • A surface
  • A plane

40
Dictionary Of Terms
  • Degree
  • Unit of angular measurement
  • 360 degrees in a full circle

41
Dictionary Of Terms
  • Detail drawing
  • Drawing of a single object completely dimensioned
  • All information necessary to produce part is n
    print

42
Dictionary Of Terms
  • Die (multiple definitions)
  • Tool used to cut external threads
  • Tool used to
  • Shape metal
  • Mold metal
  • Stamp metal
  • Cut metal

43
Dictionary Of Terms
  • Die castings
  • Metal object produced by injecting material into
    metal dies
  • Material injected into mold under pressure

44
Dictionary Of Terms
  • Draft
  • Angle provide on pattern or mold
  • Enables easy removal of finished cast or molded
    part from tooling

45
Dictionary Of Terms
  • Eccentric
  • Term means off center
  • Eccentric diameters do not share a common axis

46
Dictionary Of Terms
  • Extrusion
  • Part produced can be a metal object
  • Process forces hot metal through dies of desired
    shape

47
Dictionary Of Terms
  • Face
  • Lathe term-machine flat surface perpendicular to
    the axis of part
  • E.g.-the end of a shaft

48
Dictionary Of Terms
  • Fastener
  • Connector used to secure two or more parts
    together
  • Fastener examples
  • Bolts
  • Nuts
  • Screws
  • Rivets

49
Dictionary Of Terms
  • Ferrous
  • Metals containing iron as their base
  • E.g.steel, cast iron

50
Dictionary Of Terms
  • Fillet
  • Concave surface (interior radius)
  • At intersection of two surfaces of an object

51
Dictionary Of Terms
  • Fin
  • Thin projecting edge on cast or molded part
  • Common in castings and produced where mold halves
    come together

52
Dictionary Of Terms
  • Finish marks
  • Symbols appearing on edge view of surfaces to be
    machined
  • Usually found on drawings of castings and forgings

53
Dictionary Of Terms
  • Fixture
  • Device designed to position and hold a part in a
    machine tool
  • Does not guide cutting tool
  • References part to tool

54
Dictionary Of Terms
  • Flame hardening
  • Process of hardening steel
  • Can use Oxyacetylene torch and quench material in
    quenching medium

55
Dictionary Of Terms
  • Flange
  • Projecting rim or collar on an object
  • May include mounting holes to secure it in place

56
Dictionary Of Terms
  • Forge
  • Force hot metal into a desired shape
  • Process includes hammering or squeezing

57
Dictionary Of Terms
  • Gauge
  • The thickness of sheet metal or the diameter of
    wire
  • Designated by number rather than a dimension

58
Dictionary Of Terms
  • Geometric tolerancing
  • Tolerances on drawings
  • Emphasis on
  • Actual function or relationship of part features
  • Interchangeability is critical

59
Dictionary Of Terms
  • Gusset
  • Angular piece of metal
  • Fastened in angle of metal frame to strengthen or
    add stiffness

60
Dictionary Of Terms
  • Hardness test
  • Measures degree of hardness of metals
  • Uses numerical values for hardness

61
Dictionary Of Terms
  • Heat treatment
  • Application of heat to metals
  • Produces a variety of desired properties
    depending on type of heat treat

62
Dictionary Of Terms
  • Horizontal
  • Parallel to the horizon
  • Machine tool can be describe by this
    term-e.g.-horizontal mill

63
Dictionary Of Terms
  • Hub
  • Central part of a wheel
  • Part into which spokes are inserted

64
Dictionary Of Terms
  • Inclined surface
  • Flat surface slanting in one direction
  • Appears as an edge in one principal view
  • Appears distorted in others

65
Dictionary Of Terms
  • Included angle
  • Angle formed between one side and another
  • Always less than 180

66
Dictionary Of Terms
  • Isometric drawing
  • Three-dimensional pictorial drawing
  • Horizontal surfaces drawn on 30 axes from
    horizontal

67
Dictionary Of Terms
  • Jig
  • Device used to hold a part to be machined
  • Positions and guides cutting tool

68
Dictionary Of Terms
  • Key
  • Metal bar or wedge
  • Secures gears or pulleys to shaft
  • Prevents rotary motion between two pieces

69
Dictionary Of Terms
  • Keyseat
  • An axially located groove in a shaft
  • Positions the key

70
Dictionary Of Terms
  • Keyway
  • An axially located groove in a hub
  • Positions the key

71
Dictionary Of Terms
  • Lap
  • Produce finished surface
  • Uses soft metal impregnated with a fine abrasive
    powder

72
Dictionary Of Terms
  • Least material condition
  • Minimum amount of material is present
  • Maximum hole size
  • Smallest shaft size
  • LMC

73
Dictionary Of Terms
  • Limits
  • Maximum and minimum permissible dimensions
  • Arrive at by applying tolerances to basic
    dimensions

74
Dictionary Of Terms
  • Linear dimension
  • A dimension measured in a straight line
  • Most common of dimensions on part prints

75
Dictionary Of Terms
  • Maximum material condition
  • Maximum amount of material is present
  • Smallest hole diameter
  • Largest shaft size
  • MMC

76
Dictionary Of Terms
  • Neck
  • External groove in a cylindrical piece
  • Change in diameter
  • Usually generated where another part fits against
    a shoulder

77
Dictionary Of Terms
  • Nominal size
  • Term used for purposes of general identification
  • E.g.3/4-in. plate or 1-in. pipe

78
Dictionary Of Terms
  • Nonferrous
  • Metals that do no contain iron
  • E.g.-
  • Brass
  • Bronze
  • aluminum

79
Dictionary Of Terms
  • Normalizing
  • Process of heating steel
  • Cool in still air to room temperature
  • Restore uniform grain structure and relieves
    internal stresses

80
Dictionary Of Terms
  • Oblique surface
  • Flat surface slanting in two directions
  • Will appear distorted in all principal views

81
Dictionary Of Terms
  • Orthographic projection
  • Process of projecting essential views of
    three-dimensional object onto flat plane
  • Used to generate machinists blueprints

82
Dictionary Of Terms
  • Pad
  • Raised projection on a casting
  • Provides extra metal around series of holes or a
    slotted hole

83
Dictionary Of Terms
  • Parallel
  • Extending in the same direction-e.g.-two lines
  • Equidistant at any point
  • Lines do not meet

84
Dictionary Of Terms
  • Pattern
  • Model made of wood, metal, or other material
  • Used to form a cavity in sand for pouring castings

85
Dictionary Of Terms
  • Perpendicular
  • Being at a right angle to a given line or plane
  • Or 90 to a given line or plane

86
Dictionary Of Terms
  • Pickle
  • Process to remove stains or oxide from parts
  • Parts immersed in an acid solution

87
Dictionary Of Terms
  • Pinion
  • In a gear assembly
  • The smaller of the two mating gears

88
Dictionary Of Terms
  • Pitch
  • Distance from a point on a thread to a
    corresponding point on next adjacent thread
  • Measured parallel to the axis to the thread

89
Dictionary Of Terms
  • Profile view
  • View that most clearly illustrates shape of a
    feature is considered profile view
  • With hole-it is view which shows it is round

90
Dictionary Of Terms
  • Quenching
  • Cool metal rapidly
  • Immerse in water or oil

91
Dictionary Of Terms
  • Radius
  • Distance from center of circle or an arc to its
    circumference
  • Equal to hone half of a diameter
  • Plural of radius is radii

92
Dictionary Of Terms
  • Ream
  • Machine operation to enlarge a hole slightly
  • Use rotating fluted tool
  • Provides greater accuracy and better finish

93
Dictionary Of Terms
  • Reciprocation
  • A straight-line, back and forth motion
  • Move in alternate directions

94
Dictionary Of Terms
  • Reference dimension
  • Used only for information purposes
  • Does not receive standard print tolerances
  • Should not be used for production or inspection

95
Dictionary Of Terms
  • Regardless of feature size
  • Condition where tolerance of position must be met
    irrespective of where the feature lies within
    size tolerance
  • RFS-is understood and never seen on a part print

96
Dictionary Of Terms
  • Relief
  • Amount one plane surface sits below another plane
  • Usually provides clearance

97
Dictionary Of Terms
  • Rib
  • A relatively thin flat member
  • Acts as a brace or support

98
Dictionary Of Terms
  • Round
  • A convex surface (exterior radius)
  • At the intersection of two surfaces of a casting
    or forging

99
Dictionary Of Terms
  • Scale
  • Refers to relative size of drawing and size of
    part
  • First number represents size of drawing
  • Second number represents size of part
  • Dimensions always represent size of part-not the
    print

100
Dictionary Of Terms
  • Section
  • Interior view of an object
  • Drawn to expose features not otherwise visible

101
Dictionary Of Terms
  • Serrated
  • Surface or edge having notches or sharp teeth
  • Aids in cutting

102
Dictionary Of Terms
  • Shim
  • Thin piece of metal or other material
  • Placed between two marts to adjust the fit, level
    a part, etc.
  • Plastic shims are also used

103
Dictionary Of Terms
  • Shoulder
  • Plane surface on a shaft
  • Normal to the axis
  • Formed by a different diameter

104
Dictionary Of Terms
  • Spline
  • A raised area on a shaft (external) or hub
    (internal) parallel to the axis
  • Designed to fit into a recessed area of a mating
    part

105
Dictionary Of Terms
  • Spotface
  • A process used to machine a round diameter on a
    rough surface
  • Found in castings around a hole
  • Provides good seating surface to nut or for head
    of bolt

106
Dictionary Of Terms
  • Springs
  • Helical
  • Flat

107
Dictionary Of Terms
  • Helical springs
  • Compression-supply force when compressed-either
    in hole or around rod
  • Extension-Supplies force when extended-pulled
    from end to end-has hooks on each end
  • Torsion-Designed to resist twisting or rotary
    motion-hooks or projections for connections

108
Dictionary Of Terms
  • Stud
  • Round piece of metal
  • Threaded on both ends

109
Dictionary Of Terms
  • Surface roughness
  • Refers to finely spaced irregularities produced
    in fabricating a part
  • Height of irregularities is rated in microinches
    or micrometers

110
Dictionary Of Terms
  • Symmetrical
  • Same on each side
  • Equal halves
  • Centerline usually indicates symmetry

111
Dictionary Of Terms
  • Tabular dimensioning
  • Type of dimensioning where letters are
    substituted for dimensions
  • Dimensions are listed in a table on a drawing
  • Permits more than one part to appear on the same
    drawing

112
Dictionary Of Terms
  • Tangent
  • Line drawn to the surface of an arc or circle
  • Contacts the arc or circle at only one point

113
Dictionary Of Terms
  • Tap
  • A tool for cutting threads in a hole
  • Hole is usually drilled to a particular size for
    threading operation

114
Dictionary Of Terms
  • Taper
  • Conical shape that permits shaft or hole to
    become gradually smaller at one end.
  • Common application is tapered shank tools for
    machining centers

115
Dictionary Of Terms
  • Temper
  • Change the physical characteristics of hardened
    steel
  • Reheat to intermediate temperature range to
    toughen steel
  • Also has softening effect

116
Dictionary Of Terms
  • Template
  • Thin sheet used as a guide
  • Contains the form and shape of piece to be made

117
Dictionary Of Terms
  • Tolerance
  • Permissible variation from a given dimension
  • Unilateral, bilateral

118
Dictionary Of Terms
  • Triangle
  • Three sides figure
  • 180 in a triangle

119
Dictionary Of Terms
  • Typical
  • Term used with drawing to indicate that all
    similar undimensioned features are same
  • Have same dimensions as the feature marked TYP
    (or typical)

120
Dictionary Of Terms
  • Undercut
  • Groove cut on inside of another cut
  • Hole is an example

121
Dictionary Of Terms
  • Unilateral
  • Having only one
  • Having only one side
  • Tolerances can be unilateral

122
Dictionary Of Terms
  • Upset
  • To strike a piece of metal until it becomes
    greater in its cross section
  • Hammer metal into different shapes

123
Dictionary Of Terms
  • Vellum
  • A translucent paper
  • Blueprints made from drawings created on this
    material

124
Dictionary Of Terms
  • Vertical
  • Perpendicular to the horizon
  • 90 from the horizontal plane

125
Dictionary Of Terms
  • Woodruff key
  • Flat key, semicircular in shape
  • Two basic dimensions coded into the key number

126
Dictionary Of Terms
  • Woodruff key
  • Last two digits indicate diameter in 1/8ths of an
    inch
  • Preceding two digits designate width in 1/32nds
    of an inch

127
Terminology Quiz 1
  • A machining operation that produces a round, flat
    spot around a hole. Abbreviated SF

Spotface
128
Terminology Quiz 1
  • A machining operation that uses a toothed cutting
    tool to produce shapes inside of a hole, such as
    a keyway.

Broach
129
Terminology Quiz 1
  • The plural of radius.

Radii
130
Terminology Quiz 1
  • The term that mean two sides are involved.

Bilateral
131
Terminology Quiz 1
  • A tool used for cutting internal threads in a
    hole.

Tap
132
Terminology Quiz 1
  • Two lines equidistant from each other, extending
    in the same direction.

Parallel
133
Terminology Quiz 1
  • The term that describes two lines or planes that
    are at right angles to one another.

Perpendicular
134
Terminology Quiz 1
  • A line drawn to an arc that contacts the arc at
    one point only, without crossing.

Tangent
135
Terminology Quiz 1
  • The thickness of steel metal by a number rather
    than a dimension.

Gauge
136
Terminology Quiz 1
  • A shaft or spindle for holding the cutting tool
    or workpiece.

Arbor
137
Terminology Quiz 1
  • A thin piece of metal inserted between two parts
    to adjust the fit.

Shim
138
Terminology Quiz 1
  • The smaller of two mating gears.

Pinion
139
Terminology Quiz 1
  • A hole slightly larger than the fastener
    intended to pass through it.

Clearance hole
140
Terminology Quiz 1
  • A projecting rim or collar used to attach
    another object.

Flange
141
Terminology Quiz 1
  • A flat surface perpendicular to the axis, such
    as the end of a shaft.

Face
142
Terminology Quiz 1
  • A point, line, or surface from where other
    features are located.

Datum
143
Terminology Quiz 1
  • A spring designed to supply force when pulled
    end to end.

Extension Spring
144
Terminology Quiz 1
  • The cooling of metals rapidly by immersing them
    in a liquid.

Quenching
145
Terminology Quiz 1
  • A dimension used only for information, not for
    production or inspection.

Reference dimension
146
Terminology Quiz 1
  • A drawing made by computer-aided drafting
    methods.

CAD Drawing
147
Terminology Quiz 2
  • A machining operation that enlarges the end
    cylindrically to a specified diameter and depth.

Counterbore
148
Terminology Quiz 2
  • A machining operation that produces a cone-shaped
    end to a hole, usually to accept a flat-head
    fastener.

Countersink
149
Terminology Quiz 2
  • The permissible variation from a specified
    dimension.

Tolerance
150
Terminology Quiz 2
  • The maximum and minimum permissible dimensions.

Limits
151
Terminology Quiz 2
  • A tool for cutting external threads.

Die
152
Terminology Quiz 2
  • Cylindrical surfaces that are equally centered
    about a common axis

Coaxiality
153
Terminology Quiz 2
  • Equal halves. The same on both sides of a common
    centerline.

Symmetrical
154
Terminology Quiz 2
  • A circular centerline upon which two or more hole
    centers are located.

Bolt circle
155
Terminology Quiz 2
  • An object made by pouring molten metal into a
    mold.

Casting
156
Terminology Quiz 2
  • A model of the part to be cast. Used to create
    a cavity in the sand.

Pattern
157
Terminology Quiz 2
  • An interior radius (concave) between
    intersecting surfaces of an object.

Fillet
158
Terminology Quiz 2
  • A circular, raised portion around a hole in a
    casting or a forging.

Boss
159
Terminology Quiz 2
  • Metals that contain iron as their base
    material, such as steel.

Ferrous
160
Terminology Quiz 2
  • Metals without iron content, such as brass,
    copper, or aluminum.

Non Ferrous
161
Terminology Quiz 2
  • Conical shape that permits a shaft or hole to
    become gradually smaller from one end to the
    other.

Taper
162
Terminology Quiz 2
  • To remove a small amount of material from the
    end of a shaft or hole to facilitate assembly.

Chamfer
163
Terminology Quiz 2
  • A groove in a shaft to position a key.

Keyseat
164
Terminology Quiz 2
  • An external groove at a change in diameter of a
    shaft, usually for another part to fit against
    its shoulder.

Neck
165
Terminology Quiz 2
  • The term used to define the angle formed
    between one side and another.

Included angle
166
Terminology Quiz 2
  • The minimum clearance ( or maximum
    interference) between two mating parts, such as a
    shaft and a hole.

Allowance
167
Abbreviation Quiz 1
  • CI

Cast Iron
168
Abbreviation Quiz 1
  • CRS

Cold Rolled Steel
169
Abbreviation Quiz 1
  • CBORE

Counterbore
170
Abbreviation Quiz 1
  • CSK

Countersink
171
Abbreviation Quiz 1
  • DIA

Diameter
172
Abbreviation Quiz 1
  • DR

Drill/Drill Rod
173
Abbreviation Quiz 1
  • FIL

Fillet
174
Abbreviation Quiz 1
  • FAO

Finish All Over
175
Abbreviation Quiz 1
  • GA

Gage
176
Abbreviation Quiz 1
  • HRS

Hot Rolled Steel
177
Abbreviation Quiz 1
  • ID

Inside Diameter
178
Abbreviation Quiz 1
  • LH

Left Hand
179
Abbreviation Quiz 1
  • MATL

Material
180
Abbreviation Quiz 1
  • MAX

Maximum
181
Abbreviation Quiz 1
  • OD

Outside Diameter
182
Abbreviation Quiz 1
  • SECT

Section
183
Abbreviation Quiz 1
  • STL

Steel
184
Abbreviation Quiz 1
  • THK

Thick
185
Abbreviation Quiz 1
  • THD

Thread
186
Abbreviation Quiz 1
  • TOL

Tolerance
187
Alphabet Of Lines
  • Visible line
  • Represents visible edges
  • Represents outlines of the object being drawn

188
Alphabet Of Lines
  • Hidden line
  • Represents edges not visible in given view
  • Represents outlines of an object not visible in
    given view

189
Alphabet Of Lines
  • Section lines
  • Appear only on a sectional view
  • Appears where surface has been cut
  • Normally drawn diagonally

190
Alphabet Of Lines
  • Centerline
  • Indicates symmetry, center points, or axes
  • Consists of alternate long and short dashes

191
Alphabet Of Lines
  • Dimension line
  • Denotes the extent of the dimension
  • Use with arrowheads

192
Alphabet Of Lines
  • Extension line
  • Extends surface or point away from view
  • Used for the purpose of dimensioning

193
Alphabet Of Lines
  • Leader
  • Drawn diagonally
  • Directs a dimension or note to an area
  • Normally terminates with an arrow
  • May terminate with a dot

194
Alphabet Of Lines
  • Cutting-plane line
  • Shows where imaginary cutting takes place to
    create a sectional view
  • May be a series of long dashes or alternately two
    short dashes between single long dashes
  • Arrowheads indicate the direction of sight

195
Alphabet Of Lines
  • Viewing-plane line
  • Used in conjunction with removed views to show
    where view would normally appear
  • Arrowheads indicate direction of sight

196
Alphabet Of Lines
  • Short break line
  • Terminates a view to conserve space and avoid
    congestion
  • Separates internal and external features with
    broken-out sections

197
Alphabet Of Lines
  • Long break line
  • Allows removal of a long central portion of an
    object to shorten a view
  • Normally used in pairs

198
Alphabet Of Lines
  • Phantom line
  • Represents the outline of an adjacent part
  • Shows alternate position of a given part

199
Alphabet Of Lines
  • Phantom line
  • Replaces repetitive detail-e.g.-coils, gear
    teeth, threads
  • Drawn with two short dashes between single long
    dashes
  • Lines are thinner than the cutting/viewing-plane
    line

200
Alphabet Of Lines
  • Chain line
  • Used to indicate an area or portion of a surface
  • Surface receives special treatment

201
Alphabet Of Lines
202
Alphabet Of Lines
  • Drawn parallel to surface profile at a short
    distance from it
  • Dimensions added for length and location

203
Alphabet Of Lines
  • Dimensions omitted when chain line clearly
    indicates location and extent of surface

204
Alphabet Of Lines Quiz 1
  • Shows the outline of the object.

Answer Visible
205
Alphabet Of Lines Quiz 1
  • 2. Indicates the place from where the removed
    view is viewed.

Answer Viewing-Plane
206
Alphabet Of Lines Quiz 1
  • 3. Points diagonally to an area or a feature.

Answer Leader
207
Alphabet Of Lines Quiz 1
  • 4. Represents a surface not visible in the view
    drawn.

Answer Hidden
208
Alphabet Of Lines Quiz 1
  • 5. Shows an alternate position of the movable
    arm.

Answer Phantom
209
Alphabet Of Lines Quiz 1
  • 6. Terminates with arrowheads and encloses a
    dimension figure.

Answer Dimension
210
Alphabet Of Lines Quiz 1
  • 7. Extends the visible line for the purpose of
    dimensioning to it.

Answer Extension
211
Alphabet Of Lines Quiz 1
  • 8. Indicates the place where the section is cut.

Answer Cutting-Plane
212
Alphabet Of Lines Quiz 1
  • 9. Shows the axis of symmetrical parts and the
    arms path of motion.

Answer Center
213
Alphabet Of Lines Quiz 1
  • 10. Permits the use of a partial view to
    conserve space and avoid congestion.

Answer Break
214
Alphabet Of Lines Quiz 1
  • 11. Represents the exposed surface of a
    sectioned feature.

Answer Section
215
Alphabet Of Lines Quiz 1
  • 12. List the five lines that are drawn thick.

Answers
  • Visible
  • Cutting-Plane
  • Viewing-Plane
  • Short Break
  • Chain

216
Alphabet Of Lines Quiz 1
  • 13. List the six lines that include short dashes.

Answers
  • Hidden
  • Center
  • Cutting-Plane
  • Viewing-Plane
  • Phantom
  • Chain

217
Alphabet Of Lines Quiz 1
  • 14. List the four lines that include arrowheads.

Answers
  • Dimension
  • Leader
  • Cutting-Plane
  • Viewing-Plane

218
Alphabet Of Lines Quiz 1
  • 15. How does the cutting-plane line differ from
    the viewingplane line (in application)?

Answer
  • The Cutting-Plane cuts the object
  • The Viewing-Plane views the object

219
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

1. Viewing-Plane
220
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

2. Extension
221
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

3. Dimension
222
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

4. Center
223
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

5. Hidden
224
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

6. Short Break
225
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

7. Cutting-Plane
226
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

8. Visible
227
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

9. Center
228
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

10. Leader
229
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

11. Section
230
Alphabet Of Lines Quiz 2
  • List the proper names of the lines used in the
    illustration.

12. Phantom
231
Alphabet Of Lines Quiz 3
Centerline Chain line Cutting-plane
line Dimension line Extension line Hidden
line Leader Long break line Phantom line Section
line Short break line Viewing-plane line Visible
line
  • Match the lines with their correct names

1. Leader
232
Alphabet Of Lines Quiz 3
Centerline Chain line Cutting-plane
line Dimension line Extension line Hidden
line Long break line Phantom line Section
line Short break line Viewing-plane line Visible
line
  • Match the lines with their correct names

2. Extension
233
Alphabet Of Lines Quiz 3
Centerline Chain line Cutting-plane
line Dimension line Hidden line Long break
line Phantom line Section line Short break
line Viewing-plane line Visible line
  • Match the lines with their correct names

3. Dimension
234
Alphabet Of Lines Quiz 3
Centerline Chain line Cutting-plane line Hidden
line Long break line Phantom line Section
line Short break line Viewing-plane line Visible
line
  • Match the lines with their correct names

4. Visible
235
Alphabet Of Lines Quiz 3
Centerline Chain line Cutting-plane line Hidden
line Long break line Phantom line Section
line Short break line Viewing-plane line
  • Match the lines with their correct names

5. Centerline
236
Alphabet Of Lines Quiz 3
Chain line Cutting-plane line Hidden line Long
break line Phantom line Section line Short break
line Viewing-plane line
  • Match the lines with their correct names

6. Section
237
Alphabet Of Lines Quiz 3
Chain line Cutting-plane line Hidden line Long
break line Phantom line Short break
line Viewing-plane line
  • Match the lines with their correct names

7. Short Break
238
Alphabet Of Lines Quiz 3
Chain line Cutting-plane line Hidden line Long
break line Phantom line Viewing-plane line
  • Match the lines with their correct names

8. Viewing-Plane
239
Alphabet Of Lines Quiz 3
Chain line Cutting-plane line Hidden line Long
break line Phantom line
  • Match the lines with their correct names

9. Chain
240
Alphabet Of Lines Quiz 3
Cutting-plane line Hidden line Long break
line Phantom line
  • Match the lines with their correct names

10. Cutting-Plane
241
Alphabet Of Lines Quiz 3
Hidden line Long break line Phantom line
  • Match the lines with their correct names

11. Long Break
242
Alphabet Of Lines Quiz 3
Hidden line Phantom line
  • Match the lines with their correct names

12. Hidden
243
Alphabet Of Lines Quiz 3
Phantom line
  • Match the lines with their correct names

13. Phantom
244
Alphabet Of Lines Quiz 4
A-Centerline B-Chain line C-Cutting-plane
line D-Dimension line E-Extension line F-Hidden
line G-Leader H-Long break line I-Phantom
line J-Section line K-Short break
line L-Viewing-plane line M-Visible line
  • Match letters from the list with numbers in the
    illustration.

1. L-Viewing-plane line
245
Alphabet Of Lines Quiz 4
A-Centerline B-Chain line C-Cutting-plane
line D-Dimension line E-Extension line F-Hidden
line G-Leader H-Long break line I-Phantom
line J-Section line K-Short break line M-Visible
line
  • Match letters from the list with numbers in the
    illustration.

2. M-visible line
246
Alphabet Of Lines Quiz 4
A-Centerline B-Chain line C-Cutting-plane
line D-Dimension line E-Extension line F-Hidden
line G-Leader H-Long break line I-Phantom
line J-Section line K-Short break line
  • Match letters from the list with numbers in the
    illustration.

3. F-Hidden line
247
Alphabet Of Lines Quiz 4
A-Centerline B-Chain line C-Cutting-plane
line D-Dimension line E-Extension
line G-Leader H-Long break line I-Phantom
line J-Section line K-Short break line
  • Match letters from the list with numbers in the
    illustration.

4. I-Phantom line
248
Alphabet Of Lines Quiz 4
A-Centerline B-Chain line C-Cutting-plane
line D-Dimension line E-Extension
line G-Leader H-Long break line J-Section
line K-Short break line
  • Match letters from the list with numbers in the
    illustration.

5. H-Long break line
249
Alphabet Of Lines Quiz 4
A-Centerline B-Chain line C-Cutting-plane
line D-Dimension line E-Extension
line G-Leader J-Section line K-Short break line
  • Match letters from the list with numbers in the
    illustration.

6. C-Cutting-plane line
250
Alphabet Of Lines Quiz 4
A-Centerline B-Chain line D-Dimension
line E-Extension line G-Leader J-Section
line K-Short break line
  • Match letters from the list with numbers in the
    illustration.

7. K-Short break line
251
Alphabet Of Lines Quiz 4
A-Centerline B-Chain line D-Dimension
line E-Extension line G-Leader J-Section line
  • Match letters from the list with numbers in the
    illustration.

8. B-Chain line
252
Alphabet Of Lines Quiz 4
A-Centerline D-Dimension line E-Extension
line G-Leader J-Section line
  • Match letters from the list with numbers in the
    illustration.

9. D-Dimension line
253
Alphabet Of Lines Quiz 4
A-Centerline E-Extension line G-Leader J-Section
line
  • Match letters from the list with numbers in the
    illustration.

10. E-Extension line
254
Alphabet Of Lines Quiz 4
A-Centerline G-Leader J-Section line
  • Match letters from the list with numbers in the
    illustration.

11. G-Leader
255
Alphabet Of Lines Quiz 4
A-Centerline J-Section line
  • Match letters from the list with numbers in the
    illustration.

12. A-Centerline
256
Alphabet Of Lines Quiz 4
A-Centerline J-Section line
  • Match letters from the list with numbers in the
    illustration.

13. J-Section line
257
Alphabet Of Lines Quiz 4
A-Centerline J-Section line
  • Match letters from the list with numbers in the
    illustration.

14. A-Centerline
258
Alphabet Of Lines Quiz 4
A-Centerline J-Section line
  • Match letters from the list with numbers in the
    illustration.

15. J-Section line
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