Chapter Tests and Problems - Higher Ed eBooks & Digital … · 2016-02-23 · Chapter Tests and Problems CHAPTER 14 PiCToRiAl DRAwings AnD TECHniCAl illusTRATions TEsT INSTRUCTIONS

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Chapter Tests and Problems

CHAPTER 14 PiCToRiAl DRAwings AnD TECHniCAl illusTRATions TEsT

INSTRUCTIONS

Answer the questions with short, complete statements or drawings as needed.

QUESTIONS

1. What is the basic intent of pictorial drawings?

2. Briefly define solid models and give at least two applications for solid models.

3. Describe parametric solid modeling and define the term parameters in your definition.

4. Name the most realistic type of pictorial illustration.

5. Briefly describe technical illustration.

6. List at least three professional uses for pictorial drawings.

7. Explain the difference between isometric lines and noni-sometric lines.

8. Identify the lines that can be measured directly and trans-ferred to the isometric drawing.

9. Give the angles between each of these three isometric axes.

10. List the three basic forms of isometric drawing.

11. Give the shape of an isometric sphere.

12. Describe the proper placement of extension lines, dimen-sion lines, and dimension text when doing isometric dimensioning.

13. Identify the proper placement of arrowheads on isometric dimensions.

14. Compare dimetric and isometric projection.

15. Describe an exploded assembly and identify the drawing method most commonly used to create exploded assemblies.

16. Give two names that identify the centerlines used in exploded views to show the connection between part and

subassembly axis and the thin solid extension lines that can be used to connect among noncylindrical features, parts, and subassemblies.

17. Define oblique drawing.

18. List the three methods of oblique drawing.

19. Name and describe the three types of perspective drawings.

20. Describe the greatest realism in pictorial presentation that can be achieved by CADD systems.

CHAPTER 14 PiCToRiAl DRAwings AnD TECHniCAl illusTRATions PRoblEms

INSTRUCTIONS

Choose the best axis to show as many features of the object as possible in your axonometric or oblique drawing. Problem as-signments are presented as engineering designs or sketches and may not match proper ASME standards.

For axonometric problems—Problems 14.1 through 14.10—draw isometric, dimetric, or trimetric as assigned. For oblique problems—Problems 14.11 through 14.17—draw cavalier, cabinet, or general oblique as assigned. Remember that circular features are best shown in the front plane of the oblique view.

For perspective problems—Problems 14.18 through 14.25—make a one-, two-, or three-point perspective drawing as assigned except for Problem 14.18, which should be done as a one-point perspective view. All objects can be turned at any desired angle on the picture-plane line for viewing from the station point, except Problem 14.18, which should be drawn in the direction indicated.

1. Make a freehand sketch of the object to assist in visualiza-tion and layout of axonometric and oblique problems.

2. For axonometric and oblique problems, select a scale to fit the drawing comfortably on an A- or B-size (A4 or A3 metric) drawing sheet. Use a C- or D-size (A2 or A1 metric) drawing sheet for drawing an initial layout of the perspective prob-lems on sketch paper or butcher paper.

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3. Dimension axonometric or oblique problems only if assigned by your instructor. Do not place dimensions on a perspective view.

4. Perspective objects without dimensions can be measured directly on the given problem and scaled up as indicated or assigned.

5. Use an ASME standard border and sheet block, unless otherwise specified by your instructor.

Problem 14.5 Axonometric projection (in.)

.45 .75 .75

.75.50

.50

.45 .1253.10

1.00

2.901.45

2.50

1.00

1.00

.75 .55

.75

2X[1.15

4.20

1.91

72

[2.10

2X 458 3.12

.38

135

[18

45

20

20

65

R34

R32

R22

R3220



Drafting templates

To access CADD template files with predefined drafting settings, go to the Student Companion Website, select Student Downloads, Drafting Templates, and then the appropriate template file.

Part 1: Problems 14.1 Through 14.5


Problem 14.4 Axonometric projection (metric)

.90

1.45

.90458

.50

4.00

1.65

2.00

1.10

1.002.00

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17

10

88

51

51

22

13

13

13

38

44

∅15


.90

.30

1.50

2.15.25

1.75

4.25.50

1.00

.25

.64

45°

4X ∅.40


12

24

24

64

32

12

55

112

2X ∅15

2X 45°

64

12

50


40 2090

43

60133

182

33

13

13

∅50∅7064


2

KEYWAY

∅1

12

1 14

∅2

∅2

14

∅1 14

2 14

2 34

38

316

1 38

×

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Problem 14.13 Oblique projection (in.)

D2.621.125

1.123 R1.12

.50

5.24

3.76

1.88

.751.50

1.62

.62

2X D.65

[1.00

[2.76

[.18

[1.75

[3.90

4X [.34458.541.24 [.56

.19





Problem 14.14 Oblique projection (metric)

38

57

45°

45°

1318

58

1515

20

19

2X ∅12

9419


2X ∅.50

2X ∅3.00

3.50

1.00

1.00

2.00

.50


R1.00

∅.65 ∅.90

2X ∅.85

4.70

.24

.48

.52.39

.64 1.42

.40

2.30 1.40

R.150

R.100

.50

2.00

4.00

1.55

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∅

∅1.94

2X ∅.582.30

1.15

R.80

2.12

1.75

.50

.50

.48

1.1301.126

Part 5: Problems 14.18 and 14.19

Problem 14.18 Perspective

PLAN

VIEW

ELEVATION

WINDOW

WINDOW

CEILING

D

D

CC

AAB

B

F

F

E

E


53'

11'

18'

26'



MEASURE AND INCREASE 2X



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PLANELEVATIONS

DEF

C

B

D D

C

C

A

A

B

B

F

F

FF

E





13'–0"

2'–0"

20'–0" 15'–0" 6'–0"

12'–0"4'–0"

20'–0"

9'–0"

6'–0"3'–0"

10'–0"

3'–0"6'–10"7'–0"

30'–0"

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Part 7: Problems 14.26 and 14.27

ADVANCeD Problem 14.26Go to the Chapter 15, Working Drawings, problems. These prob-lems are presented as assembly drawings, exploded isometric assembly drawings, parts lists, and dimensioned isometric detail drawings. An assembly drawing is a drawing that shows how the parts of a product go together. A detail drawing is a drawing of an individual part that contains all of the views, dimensions, and specifications necessary to manufacture the part. A parts list identifies every part in the assembly and is a tabulation of all parts and materials used in a product. These drawing types are described in detail in Chapter 15, Working Drawings. These fun-damentals are not important at this time.

From the problems in Chapter 15, Working Drawings, select one or more of the problems or as assigned by your instructor. Using the drawings and information provided in the assigned or selected problem, create an exploded isometric technical illus-tration, with trails, and identification numbers correlated to a parts list. Dimensions are not required. There is no recommended

ITEM NO.1 23 45 6 7 8 9 10111213

HOUSINGLUBE PORT SCRGUIDEGUIDE SCREWAXLE SLIDEPIVOT GEARTRANSFER GEARPINION GEARDRIVE GEARANTI REVERSE SPGANTI REVERSECOVER PLATECOVER SCREW

ITEM NO.14 1516 1718 19 20 21 2223242526

SHANKE SCREWSHANKE SHAFTSHANKE HANDLEHANDLE KNOBHANDLE SCREWROTATING BODYBAIL SCREWBAILTRIP LEVERLEVER SCREWTRIP SPRING SCRTRIP SPRINGBAIL SCREW

ITEM NO.27 2829 3031 32 33 34 3536373839

BAIL SPRINGWEIGHT SCREWCOUNTER WEIGHTROLLER LINELINE SCREWBAFFLE PLATEHEX NUTAXLESPINDLECLICK SPRINGSPOOLBRAKE SPRINGDRAG KNOB

PART NAMEPART NAME

PARTS LIST

SPINNING REEL

PART NAME

11

10

7

4

56

26

27

30

258

9

39

38

37

28

29

35

36

33

31

32

3413

3

21

12

14

15

16

17

18

24

23

22 21

20

19

solution. and these problems are considered advanced. In addi-tion or alternately, use your 3-D modeling program to create solid models of the selected parts and assembly. Confirm the preferred approach with your instructor.

ADVANCeD Problem 14.27Find a product of your choice or as assigned by your instructor. The product should have at least four parts and must be some-thing that you can easily disassemble without destroying. This is entirely your responsibility. Using the selected product, create an exploded isometric technical illustration, with trails, and identi-fication numbers correlated to a parts list. You need to measure the parts to create the drawings. Measurements should be ac-curate, but exact measurements are not required, because the drawings will not be dimensioned. There is no recommended solution, and these problems are considered advanced. In addi-tion or alternately, use your 3-D modeling program to create solid models of the selected parts and assembly. Confirm the preferred approach with your instructor. The following is an example of an exploded isometric assembly drawing:

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MaTh PROblEMS


Problem 14.28 Provide the measurements required to con-struct isometric, dimetric, and trimetric projections using the following actual dimensions of the parts. The dimetric and tri-metric angles are given. DIMENSION ISOMETRIC DIMETRIC TRIMETRICLeft axis 1.55 _____ (108)_____ (258)_____Right axis 2.95 _____ (408)_____ (458)_____Vertical axis 2.07 _____ _________ _________

Problem 14.29 Provide the dimetric projection measure-ments for an object with the following actual dimensions. The left and right axis angles are given. DRAWING DIMENSION MEASUREMENTLeft axis 258 2.87 _______Right axis 408 4.46 _______Vertical 3.22 _______

Problem 14.30 Provide the trimetric projection measure-ments for an object with the following actual dimensions. The left and right axis angles are given. DRAWING DIMENSION MEASUREMENTLeft axis 108 4.95 _______Right axis 608 3.18 _______Vertical 2.86 _______

Problem 14.31 If a 3/4 scale is used to draw the receding axis of a general oblique object, how long would you draw the following dimensions on the receding axis?3.23 ____6.54 ____2.48 ____4.29 ____

Problem 14.32 If a cylindrical object has a diameter of 3.75 in., what is the approximate width of the block shading that should be applied to it?

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Chapter Tests and Problems - Higher Ed eBooks & Digital … · 2016-02-23 · Chapter Tests and Problems CHAPTER 14 PiCToRiAl DRAwings AnD TECHniCAl illusTRATions TEsT INSTRUCTIONS