1 Blueprint Reading for the Machine Trades, Sixth Edition Unit 12: Auxiliary Views Russ Schultz and...

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

© 2008 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.2

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



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



Inclined Planes Partial views may terminate with

short break lines May terminate with visible lines

where applicable May use existing visible lines

where applicable



1. What type of iron is specified for the casting? (Do not abbreviate.)Malleable

Iron

Angle BRKT



2. What principal view did the auxiliary view replace?

Right-Side View

Angle BRKT



3. Is the auxiliary view a partial view or is it complete?

Partial View

Angle BRKT



4. What view shows the real shape of the reamed holes?

Top View

Angle BRKT



5. What view shows the true height of the bosses?

Front View

Angle BRKT



6. What view shows the true shape and spacing of the tapped holes?Auxiliary

View

Angle BRKT



7. What tap drill size is specified for the threaded holes?

.312

Angle BRKT



8. How many threads does each hole contain?

8

Angle BRKT



9. What is the total tolerance on the reamed holes?

.0005

Angle BRKT



10. What would be the overall height of the casting before machining?1.62

Angle BRKT



Determine the dimensions for the letter

Max: .33

A-Max

Angle BRKT




60°

B

Angle BRKT




.70

C

Angle BRKT




.65

D

Angle BRKT




.10

E

Angle BRKT




.67

F

Angle BRKT




.38

G

Angle BRKT




.30

H

Angle BRKT




.45

I

Angle BRKT




.50

J

Angle BRKT



1. Is the auxiliary view a complete view or a partial view? Partial

View

ADJ MTG ANGLE



2. Are the tapped holes true shape or elliptical on the auxiliary view? True Shape

ADJ MTG ANGLE



3. Would the tapped holes be round or elliptical on the principal view?

Elliptical

ADJ MTG ANGLE



4. What is the major thread diameter of the tapped holes?

.375

ADJ MTG ANGLE



5. What size tap drill is specified?

.312

ADJ MTG ANGLE



6. What thread series is specified?

Coarse

ADJ MTG ANGLE



7. What is the pitch of the thread? (Answer decimally.)

.0625

ADJ MTG ANGLE



8. What class of fit may be assumed for the threaded holes?

Class 2

ADJ MTG ANGLE



9. How many full threads will the blind hole contain?

12

ADJ MTG ANGLE



10. What type of section is used to expose the blind holes?

Broken Out

ADJ MTG ANGLE



11. What type of section is used to show the radius on the rib?

Revolved

ADJ MTG ANGLE



12. How much material remains between the side of the slotted hole and the ribs?

.4245

ADJ MTG ANGLE



13. What is the overall length of the slotted hole?

3.531

ADJ MTG ANGLE



14. What size fasteners are intended for use in the slotted holes?.500

ADJ MTG ANGLE



Determine the dimension for the letter

1.00

A

ADJ MTG ANGLE




1.00

B

ADJ MTG ANGLE




.62

C

ADJ MTG ANGLE




1.250

D

ADJ MTG ANGLE




Max: 6.53

E-Max

ADJ MTG ANGLE




Max: 4.025

F-Max

ADJ MTG ANGLE



1. What type of sectional view is the left-side view?

Full

ADJ HOLDER BRKT



2. How many auxiliary views does the part contain?

2

ADJ HOLDER BRKT



3. What is the pitch of the threads tapped into the tee-slot? (three decimal places.)

.036

ADJ HOLDER BRKT



4. Do the coarse threads require a larger or smaller tap drill than the fine threads?Smaller

ADJ HOLDER BRKT



5. How many threads will the tapped hole in the tee-slot contain?

7

ADJ HOLDER BRKT



6. What is the MMC of the blind drilled hole diameter?

.244

ADJ HOLDER BRKT



7. What is the maximum permissible length of the slotted holes?3.264

ADJ HOLDER BRKT



8. Is the view showing the true shape of the holes in the tee-slot a primary auxiliary view?Yes

ADJ HOLDER BRKT




1.60

A

ADJ HOLDER BRKT




2.45

B

ADJ HOLDER BRKT




.505

C

ADJ HOLDER BRKT




.190

D

ADJ HOLDER BRKT




.300

E

ADJ HOLDER BRKT




1.225

F

ADJ HOLDER BRKT




.925

G

ADJ HOLDER BRKT




.297

H

ADJ HOLDER BRKT




2.187

I

ADJ HOLDER BRKT



Determine the dimensions for

3.974

J MAX:

ADJ HOLDER BRKT




.403

K MIN:

ADJ HOLDER BRKT




.614

L MAX:

ADJ HOLDER BRKT



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



Oblique Planes Secondary

auxiliary view must be projected perpendicular to the edge

Produces true shape



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



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



Oblique Planes



1. How many principal views appear on this drawing?1

Angular Base



2. How many partial views appear on this drawing?1

Angular Base



3. What does the heavy line beneath the 3.000 dimension symbolize?

Not To Scale

Angular Base



4. What do the parentheses enclosing the 2.76 dimension symbolize?

Reference

Angular Base



5. What does the box preceding the 3.75 dimension symbolize?

Square

Angular Base



6. What does the arrow preceding the .94 dimension symbolize?

Depth

Angular Base



7. What size fasteners are intended for use in the four holes?

.375

Angular Base



8. What is the MMC of the clearance holes?

.404

Angular Base



9. How many threads will the blind hole contain?

12

Angular Base



10. How much deeper is the blind hole drilled than it is tapped?

.19

Angular Base



11. Is the surface with the tapped hole inclined or oblique?

Oblique

Angular Base



12. Is the view containing the thread specs a primary or secondary auxiliary view?

Secondary

Angular Base



13. How much material remains between the side of a clearance hole and the radius around it?

.297

Angular Base



14. Did the height dimension increase or decrease as a result of the revision?

Decrease

Angular Base



15. Did the revision affect the size of the primary auxiliary view, the secondary auxiliary view, or both?Primary

Angular Base



1. How many principal views appear on the drawing?

1

Angle Plate



2. Which view (primary or secondary auxiliary) shows the bend angle?

Primary

Angle Plate



3. Which view (primary or secondary auxiliary) shows true shape of the slot?

Secondary

Angle Plate



4. Which surface (tapped hole surface or slotted surface) is oblique?

Slotted Hole

Angle Plate



5. How many degrees is the angle plate bent from its flat stock position?

65°

Angle Plate



6. What dimension is the inside bend radius?

.25

Angle Plate



7. What would be the approximate outside bend radius?

.50

Angle Plate



8. Is the material (a) low-, (b) medium-, or (c) high-carbon steel?

(a) Low-Carbon

Angle Plate



9. Is the drawing (a) half scale or (b) double-scale?

(a) Half-Scale

Angle Plate



10. Are threads (a) left-hand or (b) right-hand?

(b) Right-Hand

Angle Plate



11. What class of fit are the threads?

Class 2

Angle Plate



12. What thread form is specified?

Unified

Angle Plate



13. What thread series is specified?

Fine Series

Angle Plate



14. What is the thread pitch? (Answer decimally.)

.05

Angle Plate



15. How many threads will each hole contain?

5

Angle Plate



16. What is the overall length of the slotted hole?

1.688

Angle Plate



17. What is the radius at the ends of the slotted hole?

.094

Angle Plate



18. What do the parentheses enclosing the .25 dimension indicate?Reference

Angle Plate



19. What is the minimum spacing permissible between threaded holes? (C to C.)

1.997

Angle Plate



20. What is the maximum overall length permissible for the slotted hole?

1.694

Angle Plate



Bend Allowance Allowance must

be made for the bend in sheet metal

Developed length is the length before bending



Bend Allowance Developed length

Sum of flat sides Added to distance

around bend measured along neutral axis



Bend Allowance Neutral axis is

approximately 0.44 of metal thickness

Measured from inside surface



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



Bend Allowance



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



2.917





4.434





2.704





3.019





3.589



1 Blueprint Reading for the Machine Trades, Sixth Edition Unit 12: Auxiliary Views Russ Schultz and...

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