1
Blueprint Reading for the Machine Trades, Sixth
Edition Unit 12: Auxiliary Views
Russ Schultz and Larry Smith
PowerPoint presentation created by LaVonne Vichlach
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Auxiliary Views
Auxiliary views show the true shape True Shape is needed for dimensioning Does not always create an additional
view on a drawing Can be used to replace one of the
principal views
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Inclined Planes Appears as an edge in a principal view True shape may be shown by projecting
a view perpendicular to it Accomplished by drawing a primary
auxiliary view Often drawn as partial views-exposing
only true shape of inclined plane
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Inclined Planes Partial views may terminate with
short break lines May terminate with visible lines
where applicable May use existing visible lines
where applicable
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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1. What type of iron is specified for the casting? (Do not abbreviate.)Malleable
Iron
Angle BRKT
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2. What principal view did the auxiliary view replace?
Right-Side View
Angle BRKT
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3. Is the auxiliary view a partial view or is it complete?
Partial View
Angle BRKT
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4. What view shows the real shape of the reamed holes?
Top View
Angle BRKT
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5. What view shows the true height of the bosses?
Front View
Angle BRKT
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6. What view shows the true shape and spacing of the tapped holes?Auxiliary
View
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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7. What tap drill size is specified for the threaded holes?
.312
Angle BRKT
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8. How many threads does each hole contain?
8
Angle BRKT
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9. What is the total tolerance on the reamed holes?
.0005
Angle BRKT
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10. What would be the overall height of the casting before machining?1.62
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
Max: .33
A-Max
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
60°
B
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.70
C
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.65
D
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.10
E
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.67
F
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.38
G
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.30
H
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.45
I
Angle BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.50
J
Angle BRKT
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1. Is the auxiliary view a complete view or a partial view? Partial
View
ADJ MTG ANGLE
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2. Are the tapped holes true shape or elliptical on the auxiliary view? True Shape
ADJ MTG ANGLE
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3. Would the tapped holes be round or elliptical on the principal view?
Elliptical
ADJ MTG ANGLE
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4. What is the major thread diameter of the tapped holes?
.375
ADJ MTG ANGLE
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5. What size tap drill is specified?
.312
ADJ MTG ANGLE
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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6. What thread series is specified?
Coarse
ADJ MTG ANGLE
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7. What is the pitch of the thread? (Answer decimally.)
.0625
ADJ MTG ANGLE
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8. What class of fit may be assumed for the threaded holes?
Class 2
ADJ MTG ANGLE
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9. How many full threads will the blind hole contain?
12
ADJ MTG ANGLE
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10. What type of section is used to expose the blind holes?
Broken Out
ADJ MTG ANGLE
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11. What type of section is used to show the radius on the rib?
Revolved
ADJ MTG ANGLE
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12. How much material remains between the side of the slotted hole and the ribs?
.4245
ADJ MTG ANGLE
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13. What is the overall length of the slotted hole?
3.531
ADJ MTG ANGLE
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14. What size fasteners are intended for use in the slotted holes?.500
ADJ MTG ANGLE
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimension for the letter
1.00
A
ADJ MTG ANGLE
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimension for the letter
1.00
B
ADJ MTG ANGLE
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimension for the letter
.62
C
ADJ MTG ANGLE
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimension for the letter
1.250
D
ADJ MTG ANGLE
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimension for the letter
Max: 6.53
E-Max
ADJ MTG ANGLE
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimension for the letter
Max: 4.025
F-Max
ADJ MTG ANGLE
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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1. What type of sectional view is the left-side view?
Full
ADJ HOLDER BRKT
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2. How many auxiliary views does the part contain?
2
ADJ HOLDER BRKT
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3. What is the pitch of the threads tapped into the tee-slot? (three decimal places.)
.036
ADJ HOLDER BRKT
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4. Do the coarse threads require a larger or smaller tap drill than the fine threads?Smaller
ADJ HOLDER BRKT
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5. How many threads will the tapped hole in the tee-slot contain?
7
ADJ HOLDER BRKT
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6. What is the MMC of the blind drilled hole diameter?
.244
ADJ HOLDER BRKT
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7. What is the maximum permissible length of the slotted holes?3.264
ADJ HOLDER BRKT
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8. Is the view showing the true shape of the holes in the tee-slot a primary auxiliary view?Yes
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
1.60
A
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
2.45
B
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.505
C
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.190
D
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.300
E
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
1.225
F
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.925
G
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
.297
H
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for the letter
2.187
I
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for
3.974
J MAX:
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for
.403
K MIN:
ADJ HOLDER BRKT
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Determine the dimensions for
.614
L MAX:
ADJ HOLDER BRKT
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Oblique Planes Oblique surface
will never appear as an edge in any principal view
True shape of oblique surface requires an auxiliary view to show edge
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Oblique Planes Secondary
auxiliary view must be projected perpendicular to the edge
Produces true shape
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Oblique Planes Used when a
feature such as a hole is located on the oblique surface
Principal views may be omitted if not needed for clarity
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Oblique Planes Auxiliary views may
be partial to simplify drawings
Light projection lines or continuous centerlines may remain on drawing to help reader visualize relationship of views
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Oblique Planes
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Oblique Planes
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1. How many principal views appear on this drawing?1
Angular Base
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2. How many partial views appear on this drawing?1
Angular Base
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3. What does the heavy line beneath the 3.000 dimension symbolize?
Not To Scale
Angular Base
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4. What do the parentheses enclosing the 2.76 dimension symbolize?
Reference
Angular Base
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5. What does the box preceding the 3.75 dimension symbolize?
Square
Angular Base
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6. What does the arrow preceding the .94 dimension symbolize?
Depth
Angular Base
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7. What size fasteners are intended for use in the four holes?
.375
Angular Base
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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8. What is the MMC of the clearance holes?
.404
Angular Base
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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9. How many threads will the blind hole contain?
12
Angular Base
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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10. How much deeper is the blind hole drilled than it is tapped?
.19
Angular Base
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11. Is the surface with the tapped hole inclined or oblique?
Oblique
Angular Base
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12. Is the view containing the thread specs a primary or secondary auxiliary view?
Secondary
Angular Base
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13. How much material remains between the side of a clearance hole and the radius around it?
.297
Angular Base
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14. Did the height dimension increase or decrease as a result of the revision?
Decrease
Angular Base
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15. Did the revision affect the size of the primary auxiliary view, the secondary auxiliary view, or both?Primary
Angular Base
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1. How many principal views appear on the drawing?
1
Angle Plate
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2. Which view (primary or secondary auxiliary) shows the bend angle?
Primary
Angle Plate
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3. Which view (primary or secondary auxiliary) shows true shape of the slot?
Secondary
Angle Plate
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4. Which surface (tapped hole surface or slotted surface) is oblique?
Slotted Hole
Angle Plate
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5. How many degrees is the angle plate bent from its flat stock position?
65°
Angle Plate
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6. What dimension is the inside bend radius?
.25
Angle Plate
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7. What would be the approximate outside bend radius?
.50
Angle Plate
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8. Is the material (a) low-, (b) medium-, or (c) high-carbon steel?
(a) Low-Carbon
Angle Plate
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9. Is the drawing (a) half scale or (b) double-scale?
(a) Half-Scale
Angle Plate
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10. Are threads (a) left-hand or (b) right-hand?
(b) Right-Hand
Angle Plate
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11. What class of fit are the threads?
Class 2
Angle Plate
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12. What thread form is specified?
Unified
Angle Plate
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13. What thread series is specified?
Fine Series
Angle Plate
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14. What is the thread pitch? (Answer decimally.)
.05
Angle Plate
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15. How many threads will each hole contain?
5
Angle Plate
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16. What is the overall length of the slotted hole?
1.688
Angle Plate
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17. What is the radius at the ends of the slotted hole?
.094
Angle Plate
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18. What do the parentheses enclosing the .25 dimension indicate?Reference
Angle Plate
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19. What is the minimum spacing permissible between threaded holes? (C to C.)
1.997
Angle Plate
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20. What is the maximum overall length permissible for the slotted hole?
1.694
Angle Plate
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Bend Allowance Allowance must
be made for the bend in sheet metal
Developed length is the length before bending
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Bend Allowance Developed length
Sum of flat sides Added to distance
around bend measured along neutral axis
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Bend Allowance Neutral axis is
approximately 0.44 of metal thickness
Measured from inside surface
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Bend Allowance Use the following
empirical formula BA=(.017453R+.0078T)
N R is inside radius T is metal thickness N is number of degrees
of bend
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Bend Allowance
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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Calculate the developed blank for the shape shown. Use the empirical formula and round your answer to three decimal places.
2.918
Bend Allowance Calculations
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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2.917
Calculate the developed blank for the shape shown. Use the empirical formula and round your answer to three decimal places.
Bend Allowance Calculations
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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4.434
Calculate the developed blank for the shape shown. Use the empirical formula and round your answer to three decimal places.
Bend Allowance Calculations
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
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2.704
Calculate the developed blank for the shape shown. Use the empirical formula and round your answer to three decimal places.
Bend Allowance Calculations
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.117
3.019
Calculate the developed blank for the shape shown. Use the empirical formula and round your answer to three decimal places.
Bend Allowance Calculations
Schultz and Smith: Blueprint Reading for the Machine Trades, 6th edition
© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.118
3.589
Calculate the developed blank for the shape shown. Use the empirical formula and round your answer to three decimal places.
Bend Allowance Calculations