Chapter Tests and Problems

Copyright © 2017 Cengage Learning®. All Rights Reserved. May not be scanned, copied, or duplicated, or posted to a publicly accessible website, in whole or in part.

Chapter Tests and Problems

ChaPTer 6 Lines and LeTTering TesT

INSTRUCTIONS

Answer the questions with short, complete statements or draw-ings as needed.

QUESTIONS

Part 1: Lines

1. Identify the ASME document that governs line standards.

2. What are construction lines used for, and how should they be drawn?

3. Discuss line uniformity and line contrast.

4. Should there be any difference in line darkness?

5. What is the recommended thickness of object lines?

6. What do hidden lines represent on a drawing?

7. Describe two functions that centerlines serve on a drawing.

8. Extension lines are thin lines that are used for what purpose?

9. Where should the extension lines begin in relationship to the object and end in relation to the last dimension line?

10. Describe leaders.

11. What is the correct length-to-width ratio of a properly drawn arrowhead?

12. Should arrowheads on a drawing all be the same size? Why?

13. Describe the difference between a cutting-plane and a viewing-plane line.

14. Should cutting-plane lines be drawn thick or thin?

15. Discuss the recommended spacing and angle of section lines.

16. List two uses for phantom lines.

17. What type of line is used to indicate that a portion of a sur-face or feature will receive a specific treatment?

18. Describe the line thicknesses recommended by the ASME standard.

19. How can you draw parallel lines that are very close together, so the space between the lines does not fill in when the drawing is reproduced?

20. Give another name for visible lines, describe their purpose on a drawing, and give their recommended thickness.

Part 2: Line Identification

Given the print on page 217, identify the lines labeled A through M.

Part 3: Lettering

1. What type of lettering characters are recommended by ASME for engineering drafting?

2. According to ASME standards, what are the minimum rec-ommended lettering heights?

3. Define font.

4. Identify two terms that are used for lettering in CADD terminology.

5. Identify the ASME recommended inch and metric units.

6. Provide the general note placed on drawings to identify the predominant units used on the drawing.

7. Identify the ASME document that provides the recom-mended lettering standards.

8. Describe how decimal points should be treated when placed in numerals.

9. Identify the drafting disciplines that commonly use frac-tions on drawings, and describe the options used for dis-playing fractions on drawings.

10. Give the recommended slant for inclined lettering, and identify at least one drafting discipline where inclined let-tering is used.

11. Briefly describe lettering legibility requirements on a drawing.

12. Explain what the ASME standard recommends for the spac-ing of letters in words, between words, and between lines of lettering.

13. Define the term default and give an example related to lettering.

59728_ch06_EOC_ptg01.indd 1 03/02/16 10:23 am


2X

.30

0

1.7

40

2.3

00

4X

.7

5

2X

.2

50

-20

UN

C-2

BS

HO

WN

4X

30

6.2

0

R2

.10

03

5

2X

11

3

1.7

00

.12

0

.40

0

2X

R1

.95

0

R1

.85

2±.

00

1

VIE

WA

-A

3.1

0

2X

1.2

3

(3.5

8)

R1

.80

5

15

30

2

X 6

7

1.7

0

.50

0

6X

.1

38

-32

UN

C-2

B.2

5 M

IN

A

2X

.2

50

-20

UN

C-2

B.3

0 M

IN

.10

R.2

5

2.1

00

.95.5

0

2.1

00

30

2X

67

2X

.4

0

2.3

50

.03

0

.06

05

.40

0.4

4 M

IN

2X

11

3

2.7

00

R2

.35

0

2X

.1

25

2.3

50

4X

ÿ.2

70

± .0

10

TH

RU

ÿ.4

4.4

3

5

.42

0

2.0

00

2X

60

4X

R3

.00

0

.60

1.7

0

1.2

5

A.12

X 4

5

5

5X

.2

80

SH

OW

NS

HO

WN

ÿ.2

8ÿ

.44

5X

ÿ.1

80

TH

RU

ÿ.3

12

.25

PR

OJE

CT

:

DR

AW

N

CH

EC

K

DE

SIG

N

EN

GR

AP

PR

DA

TE

TIT

LE

SIZ

EC

AG

ED

WG

. N

O.

SC

AL

EP

RIN

TE

D:

RE

VIS

ION

S

DE

SC

RIP

TIO

NZ

ON

ELT

RD

AT

EA

PP

RO

VE

D

RE

VD

WG

NO

.

Po

rtla

nd

Or

97

22

41

65

05

SW

72

nd

Ave

FL

IR S

yste

ms

Inc.

CA

LC. W

T.

FIN

ISH

MA

TE

RIA

L

DIM

EN

SIO

NS

AR

E I

N I

NC

HE

SU

NL

ES

S O

TH

ER

WIS

E S

PE

CIF

IED

DE

CIM

ALS

.XX

.XX

XH

OLE

ˇ .X

X.X

XX

AN

GLE

S

0 3

0'B

EN

DS

±2

PE

RP

EN

D.

.00

3/IN

CO

NC

EN

.003

/IN

FR

AC

TIO

NS

±1/

32S

TR

AIG

HT

NE

SS

&/O

R F

LA

TN

ES

S:

.00

5/I

NT

HR

EA

DS

:E

XT

ER

NA

L-C

LA

SS

2A

INT

ER

NA

L-C

LA

SS

2B

AN

GL

ES

,BE

ND

S,

& I

NT

ER

SE

CT

ION

S:

90

M

AC

HIN

ED

SU

RF

AC

ES

:

SA

MP

LE

S M

US

T B

E A

PP

RO

VE

D B

Y E

NG

.P

RIO

R T

O S

TA

RT

ING

PR

OD

UC

TIO

N

DO

NO

T S

CA

LE

DR

AW

ING

63O

R B

ET

TE

R

DW

G2

RE

V2

AL

L D

IME

NS

ION

S I

N [

] A

RE

MM

± .00

5.0

03.0

01

±.01

5±.

005

7

A

56

84

12

3

BCD

ABCD

56

78

41

3

RE

V

11

SH

EE

T

OF

1:1

DAT

ED

RA

WN

PR

OJE

CT

D6

48

69

NO

TE

S:

+ -L

EN

S M

TG

SA

DD

LE

- T

EL

ES

CO

PE

.05

TH

ICK

AL

50

52

-H3

2

MIL

-C-5

541,

CL3

CH

EM

FIL

M P

ER

CO

NT

RA

ST

ING

CO

LOR

, .1

2 in

. H

IGH

GO

TH

IC S

TY

LE C

HA

RA

CT

ER

S,

INC

LUD

EID

EN

TIF

Y I

AW

MIL

-ST

D-1

30,

BY

RU

BB

ER

ST

AM

P O

R H

AN

D M

AR

K,

PA

RT

TO

BE

FR

EE

OF

BU

RR

S A

ND

SH

AR

P E

DG

ES

.

DIM

EN

SIO

NS

AN

D T

OLE

RA

NC

ES

PE

R A

SM

E Y

14.5

-200

9.

LAT

ES

T R

EV

LE

VE

L: 6

4869

-XX

XX

XX

XX

RE

V_.

LO

CA

TE

AP

PR

OX

AS

SH

OW

N.

INT

ER

PR

ET

DR

AW

ING

IA

W M

IL-S

TD

-100

.

3. 42.1.

G

L

I

J

H

F

C

E

D

B

A

K

M

59728_ch06_EOC_ptg01.indd 2 03/02/16 10:23 am


14. Define justification.

15. What does the term single stroke mean with regard to free-hand lettering?

ChaPTer 6 Lines and LeTTering ProbLems

LINE PRObLEmS

Part 1: Problems 6.1 Through 6.11

1. Using the selected engineer’s layout as a guide only, create an original drawing following your course objectives. Make a preliminary sketch if required by your instructor. Draw only the object lines, centerlines, hidden lines, and phantom lines as appropriate for each problem. Do not draw dimen-sions. Keep in mind that the engineer’s sketches are rough and not meant for tracing.

2. Complete the drawing using the correct line standards de-scribed in this chapter.

3. Use an appropriately sized ASME sheet and use ASME sheet blocks. Complete the title block.

a. The title of the drawing is given.b. The material the part is made of is given.c. The drawing or part number is the same as the problem

number.d. Specify the scale and other unspecified information.

4. Reproduce your drawing for checking unless otherwise specified by your instructor.

Problem 6.1 Object lines (in.)Part Name: PlateMaterial: .25-in.-thick mild steel (MS)

3.5

9.0

4.05.5

8.0

3.5

6.0

6.5

7.0

2.0

3.5

5.5

1.01.5

5.0

2.5

2.0

Problem 6.2 Straight object lines only (in.)Part Name: Milk StencilMaterial: .015-in.-thick wax-coated cardboard. Used as a stencil to spray paint identification on crates of milk.

(CUT

OUT)

(CU

T O

UT)

(CU

T O

UT)

(CUT O

UT)

1/2

1/4

1/2

1/2 1/2

1 1/2 3/4

1/2

9 3/4

1

3 3/4

3/4

62º

3/4 1 3/41/2 1/2

30º

40º

1/2

1 3/4

1/2

30º

1 1/23/455º

CENTERLINE

5 3/4

59728_ch06_EOC_ptg01.indd 3 03/02/16 10:23 am


Problem 6.3 Arcs, object lines, and centerlines (in.)

Part Name: Latch

Material: .25-in.-thick mild steel

8 5/8

R12

67 3/8

2848

23 5/8

Problem 6.4 Circle, object lines, and centerlines (in.)

Part Name: Stove Back


3.0

6.0

4.0

23.0

18.0

24.0

12.0

708

Ø6.0

Problem 6.5 Circle and arc object lines and centerlines (in.)

Part Name: Bogie Lock


10 3/1613

17 3/16

8

Ø5 1/2

R7

R1 1/2

2

29 1/2

59

Problem 6.6 Circle and arc object lines and centerlines (metric)

Part Name: T-Slot Cleaner

Material: 6-mm-thick cold rolled steel (CRS)

12

6R13

R3

Ø10

R14

10

125

44

28

Problem 6.7 Circle and arc object lines and centerlines (in.)

Part Name: T-Slot Cleaner

Material: .25-in.-thick cold rolled steel

.500

.250R.500

R.125

Ø.375

R.562

4.938

1.750

.375

1.125

Problem 6.8 Arcs, circles, and centerlines (in.)

Part Name: Bracket

Material: Stainless steel

5.000

3.875

R1.125

.500

.500.625

2X Ø.250

.375

.750

.500

3.250

1.625

.625

2.00

.250

1.3751

59728_ch06_EOC_ptg01.indd 4 03/02/16 10:23 am


Problem 6.9 Arcs, circles, and centerlines (in.)

Part Name: Bracket

Material: Mild steel

1.375 1.375 1.375

1.50.531

1.00

.281

3.125

4.687

2X R.781

6X Ø.218

2X Ø.531

Problem 6.10 Arcs, centerlines, and hidden lines (in.)

Part Name: Pin

Material: Phosphor bronze

LETTERINg PRObLEmS


Use a Gothic lettering style such as Arial, Century Gothic, RomanS, or SansSerif unless otherwise specified by your instruc-tor. Use text .12-in. (3-mm) high. Space lines of lettering .12 in. apart unless otherwise specified by your instructor. Reproduce your drawing for checking unless otherwise specified by your instructor.

Problem 6.12The standard for lettering was established in 1935 by the Ameri-can National Standards Institute. This standard is now conveyed by the American Society of Mechanical Engineers Document ASME Y14.2, Line Conventions and Lettering. Letters and num-bers should be opaque and clearly spaced. Lettering can be verti-cal or inclined, but only one style should be used throughout the

Ø.380

4X .090

3X Ø.420Ø.540

Ø.550 Ø.320Ø.385

R .020

2.120

1.900

.350

.400

3X Ø.400

R .020

Problem 6.11 Multiviews (2 views), object lines, and hidden lines (in.)

Part Name: V-block

Material: 4.00-in.-thick mild steel

2.000

.100.375

.500

1.000

.250

45º

4.000

.250

.250

.125

.250.250

2.000

59728_ch06_EOC_ptg01.indd 5 03/02/16 10:23 am


drawing. Uppercase letters are used on drawings unless lower-case letters are required for a specific application. The lettering style used when revising a drawing should match the original drawing lettering style.

Problem 6.13According to ASME Y14.2, the minimum recommended lettering height depends on the drawing-sheet size and the application on the drawing. Typically, lettering height on engineering drawings is .12 in. (3 mm). All dimension numerals, notes, and other let-tered information should be the same height except for titles, drawing numbers, section and view letters, and other captions, which are .24 in. (6 mm) high.

Problem 6.14

NoTeS:

1. Unless otherwise specified, all dimensions are in millimeters.

2. Dimensions and tolerances per ASME Y14.5-2009.

3. Remove all burrs and sharp edges.

4. All fillets and rounds r6.

5. Caseharden 62 rockwell c scale.

6. Areas where material has been removed shall have smooth transitions and be free of scratches, grind marks, and burrs.

7. Finish black oxide.8. Part to be clean and free of foreign debris.

maTh PRObLEmS


Problem 6.15 For the illustration of the block shown:

2 14

2 18

1

y1y21

2

14

14

a. Determine dimension y1.b. Determine dimension y2.c. Determine the overall width of 12 of the blocks laid side

to side.d. Convert each of the four given dimensions of the block to

decimal fractions.Problem 6.16 Twenty-five pieces of metal are needed for a job. Each piece is to be 3 3/320 in length. Disregarding the cutting loss, what length of stock is needed?

Problem 6.17 A piece of stock 25 7/80 long is to be cut into five equal lengths. Allowing 1/160 lost per cut, what will be the length of each of the five pieces?

Problem 6.18 A drawing shows a dimension of 4.18750. Convert this decimal fraction to a common fraction.

Problem 6.19 Convert each decimal fraction to a common fraction:

a. 2.50b. .1250c. 14.43750d. 5.750

59728_ch06_EOC_ptg01.indd 6 03/02/16 10:23 am

Chapter Tests and Problems

Documents