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

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

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

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

Angle BRKT

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

Angle BRKT

8. How many threads does each hole contain?

Angle BRKT

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

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

Angle BRKT

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

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?

ADJ MTG ANGLE

5. What size tap drill is specified?

ADJ MTG ANGLE

6. What thread series is specified?

Coarse

ADJ MTG ANGLE

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

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?

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?

ADJ MTG ANGLE

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

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

ADJ MTG ANGLE

Max: 6.53

ADJ MTG ANGLE

Max: 4.025

ADJ MTG ANGLE

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

ADJ HOLDER BRKT

2. How many auxiliary views does the part contain?

ADJ HOLDER BRKT

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

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?

ADJ HOLDER BRKT

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

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

Determine the dimensions for

J MAX:

ADJ HOLDER BRKT

K MIN:

ADJ HOLDER BRKT

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?

Angular Base

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

Angular Base

8. What is the MMC of the clearance holes?

Angular Base

9. How many threads will the blind hole contain?

Angular Base

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

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?

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?

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?

Angle Plate

6. What dimension is the inside bend radius?

Angle Plate

7. What would be the approximate outside bend radius?

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.)

Angle Plate

15. How many threads will each hole contain?

Angle Plate

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

Angle Plate

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

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.)

Angle Plate

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

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.

Bend Allowance Calculations

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

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