Title: Blueprint Reading for the Machine Trades, Sixth Edition Unit 4: Reading Multiview Drawings
1Blueprint Reading for the Machine Trades, Sixth
Edition Unit 4 Reading Multiview Drawings
- Russ Schultz and Larry Smith
- PowerPoint presentation created by LaVonne
Vichlach
2Reading 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
3Reading the Drawings
- Need to be proficient at reading multiview
drawings - May need to calculate dimensions not provided
from surrounding information
4Spacer Block
A
.62
5Spacer Block
Calculate
B
.66
6Spacer Block
Calculate
C
.64
7Spacer Block
Calculate
D
1.94
8Spacer Block
Calculate
E
1.04
9Spacer Block
Calculate
F
1.28
10Spacer Block
Calculate
G
1.30
11Spacer Block
Calculate
H
1.92
12Spacer Block
Calculate
I
1.14
13Spacer Block
Calculate
J
.10
14Spacer Block
Calculate
K
1.94
15Spacer Block
Calculate
L
.82
16Spacer Block
M
1.04
17Basic Dimension Quiz
Which of the three basic dimensions are shown in
the front view-height, width, or depth?
Height Width
18Basic Dimension Quiz
Which of the three basic dimensions are shown in
the top view-height, width, or depth?
Width Depth
19Basic Dimension Quiz
Which of the three basic dimensions are shown in
the right-side view-height, width, or depth?
Height Depth
20Basic Dimension Quiz
Which of the three basic dimensions are shown in
the bottom view-height, width, or depth?
Width Depth
21Basic Dimension Quiz
Which of the three basic dimensions are shown in
the left-side view-height, width, or depth?
Height Depth
22Basic Dimension Quiz
Which of the three basic dimensions are shown in
the rear view-height, width, or depth?
Height Width
23Dimension Calculations 1
1. Height dimension?
1.30
24Dimension Calculations 1
2. Width dimension?
2.00
25Dimension Calculations 1
3. Depth dimension?
1.10
26Dimension Calculations 1
A
.50
27Dimension Calculations 1
B
.80
28Dimension Calculations 1
C
.70
29Dimension Calculations 1
D
.50
30Dimension Calculations 1
E
.60
31Dimension Calculations 1
F
.20
32Dimension Calculations 1
G
1.30
33Dimension Calculations 1
H
2.00
34Dimension Calculations 1
I
1.50
35Dimension Calculations 1
J
.50
36Dimension Calculations 1
K
.60
37Dimension Calculations 1
L
1.10
38Dimension Calculations 1
M
.60
39Dimension Calculations 1
N
.50
40Precedence of Lines
- When visible lines, hidden lines, or centerlines
coincide in same view-a preferred line is
illustrated.
41Precedence of Lines
- Visible line over hidden line
- Visible line over centerline
- Hidden line over centerline
42Precedence of Lines
43ADJ Holding Block
- 1. What is the name of the object?
Adj Holding Block
44ADJ Holding Block
- 2. Of what material is the object made? (Do not
abbreviate.)
Hot-rolled steel
45ADJ Holding Block
- 3. To what scale (half, full, double) is the
object drawn?
Full
46ADJ Holding Block
- 4. What system of dimensioning (fractional,
decimal, metric) is used?
Metric
47ADJ Holding Block
- 5. What decimal increments (inches, centimeters,
millimeters) are used?
Millimeter
48ADJ Holding Block
- 6. What angle of projection (first, second,
third) is used?
Third
49ADJ Holding Block
- 7. What tolerance is assigned to each dimension?
?0.5 MM
50ADJ Holding Block
- 8. What is the height dimension?
38 MM
51ADJ Holding Block
- 9. What is the width dimension?
68 MM
52ADJ Holding Block
- 10. What is the depth dimension at maximum
material condition?
39.5
53ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter A.
39
54ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter B.
55.5
55ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter C.
22
56ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter D.
41
57ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter E.
24
58ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter F.
25.5
59ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter G.
24.5
60ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter H.
14.5
61ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter I.
6.5
62ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter J.
12
63ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter K.
10
64ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter L.
7.5
65ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter M.
18.5
66ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter N.
4.5
67ADJ Holding Block
- Enter the dimensions from the drawing 11A011 for
the letter O.
14.5
68Dimension Calculations 2
1.32
69Dimension Calculations 2
1.58
70Dimension Calculations 2
A
.48
71Dimension Calculations 2
B
1.38
72Dimension Calculations 2
C
.32
73Dimension Calculations 2
D
.34
74Dimension Calculations 2
E
.66
75Dimension Calculations 2
F
.30
76Dimension Calculations 2
G
.58
77Dimension Calculations 2
H
1.86
78Dimension Calculations 2
I
.32
79Dimension Calculations 2
J
.36
80Dimension Calculations 2
K
.04
81Dimension Calculations 2
L
.66
82Dimension Calculations 2
M
.32
83Dimension Calculations 2
N
.96
84Accumulated 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
85Dimensioning Methods
- Three different methods of dimensioning same
shaft - Tolerances on step may vary depending on
dimensioning method
86Chain 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
87Broken-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.
88Datum Dimensioning
- Each step length is measured from a common
surface or baseline - Accumulation is limited to not more than two
tolerances
89A
D
C
B
Enter the appropriate letters (A thru D) into the
corresponding numbered balloons shown.
90A
C
E
D
B
Enter the appropriate letters (A thru D) into the
corresponding numbered balloons shown.
91What is the tolerance on the overall length?
?.01
92What is the tolerance on the length of step B?
?.05
93- Is (a) first-angle or (b) third-angle projection
used?
(b) third-angle
94- Is the circular view (a) a top or (b) a bottom
view?
(a) Top view
95- Is the part (a) concentric or (b) eccentric?
(b) concentric
96- Is the part
- (a) symmetrical or
- (b) nonsymmetrical?
(a) symmetrical
97- What is the print tolerance for each dimension
shown?
? .01
98- What is the overall length of the shaft?
3.60
99 7. What is the MMC of shoulder E OD?
1.51
100 8. What is the MMC of the bore ID?
1.49
101 9. What is the tolerance on the length of
shoulder A ?
? .02
102 10. What is the tolerance on the length of
shoulder D ?
? .01
103 11. Why are the answers to questions 9 and 10
different?
104 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
107B
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
116Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
A
.375
117Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
B
.370
118Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
C
.375
119Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
D
.370
120Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
E
.380
121Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
F
.380
122Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
G
.380
123Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
H
.370
124Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
I
.370
125Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
J
.370
126Hole Identification 1
Determine the hole diameter that corresponds with
each encircled letter shown on the orthographic
views.
K
.375
127Hole 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
144View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
K
View Selection 3
145View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
M
146N
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
147J
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
148View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
H
149View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
F
150View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
O
151D
View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
152View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
E
153View Selection 3
Select correct orthographic view to correspond
with the arrowhead for each pictorial view.
B
154Dimension Calculations 5
Determine the corresponding dimensions for the
following.
Height dimension
1.90
155Dimension Calculations 5
Determine the corresponding dimensions for the
following.
Width dimension
2.00
156Dimension Calculations 5
Determine the corresponding dimensions for the
following.
A
1.45
157Dimension Calculations 5
Determine the corresponding dimensions for the
following.
B
.52
158Dimension Calculations 5
Determine the corresponding dimensions for the
following.
C
2.10
159Dimension Calculations 5
Determine the corresponding dimensions for the
following.
D
.505
160Dimension Calculations 5
Determine the corresponding dimensions for the
following.
E
.42
161Dimension Calculations 5
Determine the corresponding dimensions for the
following.
F
1.00
162Dimension Calculations 5
Determine the corresponding dimensions for the
following.
G
.45
163Dimension Calculations 5
Determine the corresponding dimensions for the
following.
H
.495
164Dimension Calculations 5
Determine the corresponding dimensions for the
following.
I
1.13
165Dimension Calculations 5
Determine the corresponding dimensions for the
following.
J
.27
166Corner BRKT
1. What does BRKT in the title block abbreviate?
Bracket
167Corner BRKT
2. What does HRS in the material block
abbreviate?
Hot-rolled steel
168Corner BRKT
3. What does NTS in the scale block abbreviate?
Not to scale
169Corner BRKT
4. What is the overall depth dimension?
2.22
170Corner BRKT
5. What is the MMC of the overall height?
2.19
171Corner BRKT
6. What is the MMC of the .360 hole?
.355
172Corner BRKT
7. How much tolerance can accumulate between the
.380 hole centers?
? .01
173Corner BRKT
8. What is the overall size of the CORNER
BRACKET?
2.22 x 2.24 x 2.18
174Corner BRKT
Calculate the value for A
.18
175Corner BRKT
Calculate the value for B
.13
176Corner BRKT
Calculate the value for C
.37
177Corner BRKT
Calculate the value for D
.76
178Corner BRKT
Calculate the value for E
.17
179Corner BRKT
Calculate the value for F
.31
180Corner BRKT
Calculate the value for G
.80
181Corner BRKT
Calculate the value for H
.46
182Corner BRKT
Calculate the value for I
.31
183Corner BRKT
Calculate the value for J
.81
184Corner BRKT
Calculate the value for K
.04
185Corner BRKT
Calculate the value for L
.49
186Corner BRKT
Calculate the value for M
.00
187View Selection 4
Select the correct right side view.
188View Selection 4
Select the correct right side view.
189View Selection 4
Select the correct right side view.
190View Selection 4
Select the correct right side view.
191View Selection 4
Select the correct right side view.
192View Selection 4
Select the correct right side view.
193View Selection 4
Select the correct right side view.
194View Selection 4
Select the correct right side view.
195View Selection 4
Select the correct right side view.
196Missing Views 2
Complete the view.
197Missing Views 2
Complete the view.
198Missing Views 2
Complete the view.
199Missing Views 2
Complete the view.