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Blueprint Reading for the Machine Trades, Sixth Edition Unit 4: Reading Multiview Drawings

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Title: Blueprint Reading for the Machine Trades, Sixth Edition Unit 4: Reading Multiview Drawings


1
Blueprint Reading for the Machine Trades, Sixth
Edition Unit 4 Reading Multiview Drawings
  • Russ Schultz and Larry Smith
  • PowerPoint presentation created by LaVonne
    Vichlach

2
Reading the Drawings
  • Sufficient number of dimensions on a print to
    enable you to produce the drawing
  • Each dimension appears only once
  • Drafter may place dimension on different view
    than expected

3
Reading the Drawings
  • Need to be proficient at reading multiview
    drawings
  • May need to calculate dimensions not provided
    from surrounding information

4
Spacer Block
  • Calculate

A
.62
5
Spacer Block
Calculate
B
.66
6
Spacer Block
Calculate
C
.64
7
Spacer Block
Calculate
D
1.94
8
Spacer Block
Calculate
E
1.04
9
Spacer Block
Calculate
F
1.28
10
Spacer Block
Calculate
G
1.30
11
Spacer Block
Calculate
H
1.92
12
Spacer Block
Calculate
I
1.14
13
Spacer Block
Calculate
J
.10
14
Spacer Block
Calculate
K
1.94
15
Spacer Block
Calculate
L
.82
16
Spacer Block
  • Calculate

M
1.04
17
Basic Dimension Quiz
Which of the three basic dimensions are shown in
the front view-height, width, or depth?
Height Width
18
Basic Dimension Quiz
Which of the three basic dimensions are shown in
the top view-height, width, or depth?
Width Depth
19
Basic Dimension Quiz
Which of the three basic dimensions are shown in
the right-side view-height, width, or depth?
Height Depth
20
Basic Dimension Quiz
Which of the three basic dimensions are shown in
the bottom view-height, width, or depth?
Width Depth
21
Basic Dimension Quiz
Which of the three basic dimensions are shown in
the left-side view-height, width, or depth?
Height Depth
22
Basic Dimension Quiz
Which of the three basic dimensions are shown in
the rear view-height, width, or depth?
Height Width
23
Dimension Calculations 1
1. Height dimension?
1.30
24
Dimension Calculations 1
2. Width dimension?
2.00
25
Dimension Calculations 1
3. Depth dimension?
1.10
26
Dimension Calculations 1
  • Calculate

A
.50
27
Dimension Calculations 1
  • Calculate

B
.80
28
Dimension Calculations 1
  • Calculate

C
.70
29
Dimension Calculations 1
  • Calculate

D
.50
30
Dimension Calculations 1
  • Calculate

E
.60
31
Dimension Calculations 1
  • Calculate

F
.20
32
Dimension Calculations 1
  • Calculate

G
1.30
33
Dimension Calculations 1
  • Calculate

H
2.00
34
Dimension Calculations 1
  • Calculate

I
1.50
35
Dimension Calculations 1
  • Calculate

J
.50
36
Dimension Calculations 1
  • Calculate

K
.60
37
Dimension Calculations 1
  • Calculate

L
1.10
38
Dimension Calculations 1
  • Calculate

M
.60
39
Dimension Calculations 1
  • Calculate

N
.50
40
Precedence of Lines
  • When visible lines, hidden lines, or centerlines
    coincide in same view-a preferred line is
    illustrated.

41
Precedence of Lines
  • Visible line over hidden line
  • Visible line over centerline
  • Hidden line over centerline

42
Precedence of Lines
43
ADJ Holding Block
  • 1. What is the name of the object?

Adj Holding Block
44
ADJ Holding Block
  • 2. Of what material is the object made? (Do not
    abbreviate.)

Hot-rolled steel
45
ADJ Holding Block
  • 3. To what scale (half, full, double) is the
    object drawn?

Full
46
ADJ Holding Block
  • 4. What system of dimensioning (fractional,
    decimal, metric) is used?

Metric
47
ADJ Holding Block
  • 5. What decimal increments (inches, centimeters,
    millimeters) are used?

Millimeter
48
ADJ Holding Block
  • 6. What angle of projection (first, second,
    third) is used?

Third
49
ADJ Holding Block
  • 7. What tolerance is assigned to each dimension?

?0.5 MM
50
ADJ Holding Block
  • 8. What is the height dimension?

38 MM
51
ADJ Holding Block
  • 9. What is the width dimension?

68 MM
52
ADJ Holding Block
  • 10. What is the depth dimension at maximum
    material condition?

39.5
53
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter A.

39
54
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter B.

55.5
55
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter C.

22
56
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter D.

41
57
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter E.

24
58
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter F.

25.5
59
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter G.

24.5
60
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter H.

14.5
61
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter I.

6.5
62
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter J.

12
63
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter K.

10
64
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter L.

7.5
65
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter M.

18.5
66
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter N.

4.5
67
ADJ Holding Block
  • Enter the dimensions from the drawing 11A011 for
    the letter O.

14.5
68
Dimension Calculations 2
  • Height dimension?

1.32
69
Dimension Calculations 2
  • Depth dimension?

1.58
70
Dimension Calculations 2
  • Calculate

A
.48
71
Dimension Calculations 2
  • Calculate

B
1.38
72
Dimension Calculations 2
  • Calculate

C
.32
73
Dimension Calculations 2
  • Calculate

D
.34
74
Dimension Calculations 2
  • Calculate

E
.66
75
Dimension Calculations 2
  • Calculate

F
.30
76
Dimension Calculations 2
  • Calculate

G
.58
77
Dimension Calculations 2
  • Calculate

H
1.86
78
Dimension Calculations 2
  • Calculate

I
.32
79
Dimension Calculations 2
  • Calculate

J
.36
80
Dimension Calculations 2
  • Calculate

K
.04
81
Dimension Calculations 2
  • Calculate

L
.66
82
Dimension Calculations 2
  • Calculate

M
.32
83
Dimension Calculations 2
  • Calculate

N
.96
84
Accumulated Tolerances
  • Drawings are dimensioned to control tolerance of
    important features
  • Double dimensioning is avoided
  • Machinist needs to calculate dimensions
  • Calculated dimension will accumulate tolerance of
    every dimension used---true of addition and
    subtraction

85
Dimensioning Methods
  • Three different methods of dimensioning same
    shaft
  • Tolerances on step may vary depending on
    dimensioning method

86
Chain Dimensioning
  • Includes length of each step
  • Individual tolerance for each step is controlled
  • Does not include overall length
  • Each step has a tolerance
  • Overall length accumulates tolerance of each step

87
Broken-Chain Dimensioning
  • Includes overall length and all but one step
    length
  • Tolerance on overall length
  • All but least important step is controlled
  • Undimensioned length accumulates tolerance of all
    dimensions used to calculate it.

88
Datum Dimensioning
  • Each step length is measured from a common
    surface or baseline
  • Accumulation is limited to not more than two
    tolerances

89
A
  • 5-Step Shaft

D
C
B
Enter the appropriate letters (A thru D) into the
corresponding numbered balloons shown.
90
A
C
  • 5-Step Shaft

E
D
B
Enter the appropriate letters (A thru D) into the
corresponding numbered balloons shown.
91
  • 5-Step Shaft

What is the tolerance on the overall length?
?.01
92
  • 5-Step Shaft

What is the tolerance on the length of step B?
?.05
93
  • 6-Step Shaft
  • Is (a) first-angle or (b) third-angle projection
    used?

(b) third-angle
94
  • 6-Step Shaft
  • Is the circular view (a) a top or (b) a bottom
    view?

(a) Top view
95
  • 6-Step Shaft
  • Is the part (a) concentric or (b) eccentric?

(b) concentric
96
  • 6-Step Shaft
  • Is the part
  • (a) symmetrical or
  • (b) nonsymmetrical?

(a) symmetrical
97
  • 6-Step Shaft
  • What is the print tolerance for each dimension
    shown?

? .01
98
  • 6-Step Shaft
  • What is the overall length of the shaft?

3.60
99
  • 6-Step Shaft

7. What is the MMC of shoulder E OD?
1.51
100
  • 6-Step Shaft

8. What is the MMC of the bore ID?
1.49
101
  • 6-Step Shaft

9. What is the tolerance on the length of
shoulder A ?
? .02
102
  • 6-Step Shaft

10. What is the tolerance on the length of
shoulder D ?
? .01
103
  • 6-Step Shaft

11. Why are the answers to questions 9 and 10
different?
104
  • 6-Step Shaft

12. Why is there no hidden line representing
the 1.50 bore diameter in the circular view?
Precedence of lines rule-corresponds to 1.50 ?
step
105
Enter the appropriate letters G, H, I J, L,
and M into corresponding balloons.
K
I
G
J
H
M
106
Enter the appropriate letters N and L into
corresponding balloons.
L
N
107
  • Surface Identification 3

B
H
A
G
C
I
E
D
F
Enter the letters from the front view into the
corresponding balloons in the top view.
Near-closets to viewers eye. Far-blocked from
view by near surfaces.
108
All tolerances are assigned a tolerance of ?
.01. This example is the broken-chain
method-tolerances accumulate.
Surface Identification 3
A and B A and C A and E B and F C and F B and
G C and G E and G F and G
? .01 ? .02 ? .04 ? .04 ? .03 ? .02 ? .03 ? .05 ?
.06
Maximum tolerance accumulation ? .06
109
All tolerances are assigned a tolerance of ?
.01. This example is the datum method controls
tolerance accumulation.
Tolerance Calculations
A and B A and C A and E B and F C and F B and
G C and G E and G F and G
? .01 ? .01 ? .01 ? .02 ? .02 ? .02 ? .02 ? .02 ?
.02
Maximum tolerance accumulation ? .02
110
Tolerance Calculations 2
Calculate reference dimensions and their
accumulated tolerances. Tolerances always add.
Phantom lines represent the limits.)
40 ? 2
111
Tolerance Calculations 2
Calculate reference dimensions and their
accumulated tolerances. Tolerances always add.
Phantom lines represent the limits.)
40 ? 2
112
Tolerance Calculations 2
Calculate reference dimensions and their
accumulated tolerances. Tolerances always add.
Phantom lines represent the limits.)
40 4/-0
113
Tolerance Calculations 2
Calculate reference dimensions and their
accumulated tolerances. Tolerances always add.
Phantom lines represent the limits.)
20 ? 2
114
Tolerance Calculations 2
Calculate reference dimensions and their
accumulated tolerances. Tolerances always add.
Phantom lines represent the limits.)
20 4/-0
115
Tolerance Calculations 2
Calculate reference dimensions and their
accumulated tolerances. Tolerances always add.
(Phantom lines represent the limits.)
20 ? 2
116
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
A
.375
117
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
B
.370
118
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
C
.375
119
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
D
.370
120
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
E
.380
121
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
F
.380
122
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
G
.380
123
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
H
.370
124
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
I
.370
125
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
J
.370
126
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
K
.375
127
Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
L
.380
128
Dimension Calculations 3
Determine the dimensions that correspond to the
encircled letters shown to the right.
A
.45
129
Dimension Calculations 3
Determine the dimensions that correspond to the
encircled letters shown to the right.
B
.55
130
Dimension Calculations 3
Determine the dimensions that correspond to the
encircled letters shown to the right.
C
.55
131
Dimension Calculations 3
Determine the dimensions that correspond to the
encircled letters shown to the right.
D
.60
132
Dimension Calculations 3
Determine the dimensions that correspond to the
encircled letters shown to the right.
E
.50
133
Dimension Calculations 3
Determine the dimensions that correspond to the
encircled letters shown to the right.
F
.45
134
Dimension Calculations 3
Determine the dimensions that correspond to the
encircled letters shown to the right.
Height
1.05
135
Dimension Calculations 3
Determine the dimensions that correspond to the
encircled letters shown to the right.
Width
1.00
136
Dimension Calculations 4
Determine the dimensions that correspond to the
encircled letters shown to the right.
A
.60
137
Dimension Calculations 4
Determine the dimensions that correspond to the
encircled letters shown to the right.
B
.55
138
Dimension Calculations 4
Determine the dimensions that correspond to the
encircled letters shown to the right.
C
.55
139
Dimension Calculations 4
Determine the dimensions that correspond to the
encircled letters shown to the right.
D
.45
140
Dimension Calculations 4
Determine the dimensions that correspond to the
encircled letters shown to the right.
E
.60
141
Dimension Calculations 4
Determine the dimensions that correspond to the
encircled letters shown to the right.
F
.50
142
Dimension Calculations 4
Determine the dimensions that correspond to the
encircled letters shown to the right.
Width
1.00
143
Dimension Calculations 4
Determine the dimensions that correspond to the
encircled letters shown to the right.
Depth
1.05
144
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
K
View Selection 3
145
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
M
146
N
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
147
J
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
148
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
H
149
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
F
150
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
O
151
D
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
152
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
E
153
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
B
154
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
Height dimension
1.90
155
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
Width dimension
2.00
156
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
A
1.45
157
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
B
.52
158
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
C
2.10
159
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
D
.505
160
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
E
.42
161
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
F
1.00
162
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
G
.45
163
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
H
.495
164
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
I
1.13
165
Dimension Calculations 5
Determine the corresponding dimensions for the
following.
J
.27
166
Corner BRKT
1. What does BRKT in the title block abbreviate?
Bracket
167
Corner BRKT
2. What does HRS in the material block
abbreviate?
Hot-rolled steel
168
Corner BRKT
3. What does NTS in the scale block abbreviate?
Not to scale
169
Corner BRKT
4. What is the overall depth dimension?
2.22
170
Corner BRKT
5. What is the MMC of the overall height?
2.19
171
Corner BRKT
6. What is the MMC of the .360 hole?
.355
172
Corner BRKT
7. How much tolerance can accumulate between the
.380 hole centers?
? .01
173
Corner BRKT
8. What is the overall size of the CORNER
BRACKET?
2.22 x 2.24 x 2.18
174
Corner BRKT
Calculate the value for A
.18
175
Corner BRKT
Calculate the value for B
.13
176
Corner BRKT
Calculate the value for C
.37
177
Corner BRKT
Calculate the value for D
.76
178
Corner BRKT
Calculate the value for E
.17
179
Corner BRKT
Calculate the value for F
.31
180
Corner BRKT
Calculate the value for G
.80
181
Corner BRKT
Calculate the value for H
.46
182
Corner BRKT
Calculate the value for I
.31
183
Corner BRKT
Calculate the value for J
.81
184
Corner BRKT
Calculate the value for K
.04
185
Corner BRKT
Calculate the value for L
.49
186
Corner BRKT
Calculate the value for M
.00
187
View Selection 4
Select the correct right side view.
188
View Selection 4
Select the correct right side view.
189
View Selection 4
Select the correct right side view.
190
View Selection 4
Select the correct right side view.
191
View Selection 4
Select the correct right side view.
192
View Selection 4
Select the correct right side view.
193
View Selection 4
Select the correct right side view.
194
View Selection 4
Select the correct right side view.
195
View Selection 4
Select the correct right side view.
196
Missing Views 2
Complete the view.
197
Missing Views 2
Complete the view.
198
Missing Views 2
Complete the view.
199
Missing Views 2
Complete the view.
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