DOCUMENT RESUME

ED 391 910 CE 070 768

TITLE Blueprint Reading for Sheet Metal Workers. TrainingGuide.

INSTITUTION Philippine Congress, Manila. Congressional OversightCommittee on Education.

PUB DATE 95

NOTE 76p.; For related documents, see CE 070 758, CE 070760, CE 070 763, and CE 070 765-767.

PUB TYPE Guides Classroom Use Teaching Guides (ForTeacher) (052)

EDRS PRICE MF01/PC04 Plus Postage.DESCRIPTORS Adult Education; *Adult Vocational Education;

Behavioral Objectives; *Blueprints; *Competency BasedEducation; Engineering Drawing; Learning Activities;*Machine Tool Operators; *Orthographic Projection;*Sheet Metal Work

ABSTRACTThis training guide, developed during a project to

retrain defense industry workers at risk of job loss or dislocationbecause of conversion of the defense industry, is designed for acourse in blueprint reading for sheet metal workers. The followingare among the topics covered in the course: orthographic projection;isometric and oblique projection; auxiliary views; surfaceidentification; basic lines; drawing notes; title blocks; dimensions;flat pattern layout; tabulation tables; assembling drawings; andorthographic drawing interpretation. Ilcluded in the guide are thefollowing: course outline; fransparency masters; student handouts;quiz; student exercises; and reference tables. (MN)

***********************************************************************

Reproductions supplied by EDRS are the best that can be madefrom the original document.

***********************************************************************

BLeprintng

for SheetM I

Workers

TrainingEDUCATIONAL RESOURCES INFORMATION Guide "

MATERIAL HAS BEEN GRANTED BYPERMISSION TO REPRODUCE THIS

U S DEPARTMENT OF EDUCATIONIte Educatanal Finsearch and Irnprovernnnt

CENTER (ERIC)ta This document has been reproduced as

received from the per,on or orgarn/atioaoriginating it

0 Minor changes have been made toimprove iepioduction quality

Points of view or opinions stated in thisdocument do not necessarily representofficial OFR pofalinn or policy

TO THE EDUCATIONAL RESOURCESINFORMATION CENTER (ERIC)."

BEST COPY AVAILABLE

Sept

embe

r 13

, 20

and

27, 1

995

I.Pr

int I

nfor

mat

;on

A. E

valu

atio

nE

xerc

ise

Page

2

II.

Ort

hogr

aphi

c Pr

ojec

tion

3 &

4A

. Thr

ee v

iew

dra

win

gsB

. Add

ition

al v

iew

s

III.

Isom

etri

c &

Obl

ique

Pro

ject

ion

5 &

7E

xerc

ise

7

IV.

Aux

iliar

y V

iew

sA

. Rep

rese

ntat

ion

B. P

ositi

on

V.

Surf

ace

Iden

tific

atio

nA

. Vis

ualiz

atio

n of

par

ts in

3D

B. V

isua

lizat

ion

of p

arts

in th

efl

at la

yout

C. R

ecog

nitio

n of

par

ts r

elat

ions

hip

tofa

sten

ers

VI.

Bas

ic L

ines

813

Exe

rcis

e13

VII

. Dra

win

g N

otes

14A

. Mat

eria

l cal

l out

B. T

oler

ance

sC

. Spe

cifi

c be

nd r

adii

D. G

ener

al n

otes

E. L

ocal

not

esF.

Wel

d sy

mbo

ls

VII

I. T

itle

Blo

ck15

Exe

rcis

e15

IX.

Dim

ensi

ons

1623

A. D

imen

sion

uni

ts1.

Eng

lish

units

a. f

ract

iona

l dim

.b.

dec

imal

dim

.2.

Met

ric

units

B. M

etri

c to

Eng

lish

conv

ersi

on1.

Div

ide

met

ric

dim

ensi

on b

y 25

.4C

. Bas

ic r

ules

for

dim

ensi

ons

D. A

dditi

onal

info

rmat

ion

Exe

rcis

e21

E. D

raw

ing/

dim

ensi

on to

lera

nces

1. T

able

2. N

otes

4

X.

Flat

Pat

tern

Lay

out

A. V

isua

lize

orth

ogra

phic

vie

ws

as is

omet

ric

proj

ectio

n

B. V

isua

lize

orth

ogra

phic

vie

ws

as f

lat p

atte

rn

C. I

ntro

duce

air

for

med

cha

rt f

or 9

0 de

gree

ben

ds to

cal

cula

te f

lat p

atte

rn1.

exer

cise

: cal

cula

te f

lat f

rom

exa

mpl

e on

cha

rt2.

calc

ulat

e us

ing

outs

ide

dim

ensi

ons

3.ca

lcul

ate

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g in

side

dim

ensi

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ntro

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squ

are

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rt f

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gree

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ds to

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atte

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exer

cise

: cal

cula

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lat f

rom

exa

mpl

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cha

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calc

ulat

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ing

outs

ide

dim

ensi

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3.ca

lcul

ate

usin

g in

side

dim

ensi

ons

E. D

iscu

ss d

raw

ing

num

ber

403-

1304

1.vi

sual

ize

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art

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lcul

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flat

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dete

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oper

sid

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r fa

sten

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4.de

term

ine

whi

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ay f

lang

es b

end

for

pres

s br

eak

oper

atio

n

F. D

iscu

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raw

ing

num

ber

0318

-267

01.

visu

aliz

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par

t2.

calc

ulat

e fl

at p

atte

rn la

yout

Not

e:m

ater

ial c

all o

utbe

nd r

adii

call

out

tole

ranc

e ca

ll ou

t3.

detf

fmin

e pr

oper

sid

e fo

r fa

sten

ers

4.de

term

ine

whi

ch w

ay f

lang

es b

end

for

pres

s br

eak

oper

atio

nN

ote:

bend

rel

iefs

fro

nt f

lang

e

ii.

:tint

-Rea

dN

IP

X.

Flat

Pat

tun

Lay

out,

cont

inue

dG

. Dis

cuss

dra

win

g nu

mbe

r 04

05-4

913

1.vi

sual

ize

3D p

art

2.m

etri

c to

Eng

lish

conv

ersi

on3.

calm

late

fla

t pat

tern

layo

utN

ote:

mat

eria

l cal

l out

bend

rad

ii ca

ll ou

tto

lera

nce

call

out

4.de

term

ine

prop

er s

ide

for

fast

ener

s5.

dete

rmin

e w

hich

way

fla

nges

ben

d fo

r br

eak

oper

atio

n6.

dete

rmin

e W

eldn

ut lo

catio

n an

d po

sitio

n

H. D

iscu

ss d

raw

ing

num

ber

232-

2819

1.vi

sual

ize

3D p

art

2.ca

lcul

ate

flab

pat

tern

layo

ut3.

met

ric

to e

nglis

h co

nver

sion

Not

e: m

ater

ial c

all o

utbe

nd r

adii

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out

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ranc

e ca

ll ou

t4.

dete

rmin

e pr

oper

sid

e fo

r fa

sten

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5.de

term

ine

whi

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ay f

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end

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pres

s br

eak

oper

atio

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tabu

latio

n ta

ble

XI.

Tab

ulat

ion

Tab

les

41=

111

XII

. Ass

embl

y D

raw

ings

A. D

iscu

ssio

nB

. Int

erpr

etat

ion

C. V

isua

lizat

ion

XII

I. O

rtho

grap

hic

Dra

win

g In

terp

reta

tion

prac

tice

Dw

g. N

o. 0

319-

2780

posi

tion

of f

aste

ners

(w

eldn

uts)

bend

dir

ectio

nsta

bula

tion

tabl

es

Dw

g. N

o. 4

03-1

304

dire

ctio

n of

ben

ds (

part

s ha

ve b

een

bent

bac

kwar

ds)

hole

s an

d di

rect

ion

of p

art

Dyv

g. N

o. 0

319-

2670

bend

rad

ius

(see

dw

g. n

ote)

bend

dir

ectio

nto

lera

nces

deci

mal

pla

ces

Dw

g. N

o. 1

30-3

244

flat

pat

tern

layo

utpr

oper

side

for

fas

tene

rs

i v

90

4MIP

XII

I. O

rtho

grap

hic

Dra

win

g In

terp

reta

tion

prac

tice

cont

inue

d

/MIM

E/

Dw

g. N

o. 4

03-3

629

flat

pat

tern

layo

utpr

oper

sid

e fo

r fa

sten

ers

Dw

g. N

o. 0

405-

4913

view

s (h

ow to

inte

rpre

t)in

side

/out

side

view

s: f

ront

, top

, rig

ht, l

eft,

botto

m

Dw

g. N

o. 2

32-3

819

tabu

latio

n ta

bles

flat

pat

tern

form

ed v

iew

insi

de/o

utsi

de o

f a

part

v

1 1

1 2

Tab

le o

f C

onte

rte

Page

1T

oler

ance

Dim

ensi

ons

22

Info

rmat

ion

on a

Blu

epri

nt2

You

r N

otes

23

Tea

m Q

uiz

2A

ppen

dice

s A

-F

Ort

hogr

aphi

c Pr

ojec

tion

3A

: Air

Ben

ding

Ben

d

Vie

ws

in O

rtho

grap

hic

Dra

win

gs4

Allo

wan

ces

Tab

le24

Rep

rese

ntin

g an

Obj

ect

5B

: Ben

d A

llow

ance

Sket

chin

g an

Iso

met

ric

Dra

win

g6

Cal

cula

tions

25 &

26

Surf

ace

Iden

tific

atio

n7

C: S

quar

e B

ends

Ben

dB

asic

Lin

es8

- 10

Allo

wan

ces

Tab

les

27 -

29

You

r N

otes

11

Iden

tifyi

ng B

asic

Lin

es12

- 1

3D

: Cop

per

Bus

Bar

Loc

al a

nd G

ener

al N

otes

14B

end

Allo

wan

ce30

Titl

e B

lock

s15

E: 4

5 D

egre

e C

oppe

r

Dim

ensi

ons

16B

end

Form

ula

31

Dim

ensi

on U

nits

17-1

9F:

45

Deg

ree

Ben

d E

xam

ple

32

Rul

es f

or D

imen

sion

ing

20

Dim

ensi

onin

g Pr

actic

e21

13

1

14

i:Inf

orm

a ió

non

aB

luep

rin

Info

rmat

ion

foun

d on

abl

uepr

int:

Par

ts to

be

man

ufac

ture

d

Dim

ensi

ons

Not

es

Mat

eria

l

Titl

e of

the

draw

ing

and

part

Dra

win

g nu

mbe

r

Man

ufac

ture

s na

me

Tol

eran

ces

Sca

le o

f the

dra

win

g

Nam

es o

f the

dra

fter,

engi

neer

, and

che

cker

s

Dra

win

g an

d ap

prov

al d

ates

Rev

isio

n in

form

atio

n

Tab

ulat

ion

tabl

es

Tea

m Q

uiz:

Look

at t

he p

rovi

ded

prin

ts in

you

r fo

lder

.Lo

cate

the

requ

este

d in

form

atio

n be

low

.W

ith y

our

part

ner,

num

ber

the

vario

uspa

rts

of a

prin

t.

1.Lo

cate

the

part

s, a

s sh

own

in li

nedr

awin

gs.

2.P

oint

out

the

dim

ensi

ons.

3.P

oint

out

the

note

s.

4.W

here

is th

e m

ater

ial l

iste

d?

5.W

hat's

the

title

of t

he d

raw

ing

and

the

draw

ing

num

ber?

6.W

here

is th

e O

nan/

Cum

min

s na

me

loca

ted

on th

e pr

int?

7.P

oint

out

the

tole

ranc

es.

8.W

hat i

s th

e sc

ale

of th

is d

raw

ing?

9.W

ho d

rafte

d th

is p

rint?

10.

Who

app

rove

d th

e pr

int?

11.

Whe

n w

as th

e pr

int d

rafte

d?

12.

Poi

nt o

ut th

e re

visi

on in

form

atio

n.

2

1 G

Ort

hogr

aphi

c pr

ojec

tion

is a

met

hod

of r

epre

sent

ing

the

true

sha

pe o

f an

obj

ect o

n a

sing

le p

lane

.

Eve

ry li

nef

an o

bjec

t is

on a

sin

gle

plan

e.

Eve

ry li

ne o

f th

e ob

ject

mus

t app

ear

as a

line

or

poin

t on

the

plan

e of

proj

ectio

n.

Lin

es th

at c

an b

e se

enar

e sh

own

asso

lid li

nes.

Lin

es th

at a

re n

otvi

sibl

e, b

ecau

se th

ey a

rehi

dden

by

som

e pa

rt o

fth

e ob

ject

, are

repr

esen

ted

by d

ashe

dlin

es.

Ort

hogr

aphi

c pr

ojec

tion

isdi

vide

d in

to 6

vie

ws:

Fron

t Vie

w:

Top

Vie

w:

Rig

ht s

ide:

Lef

t sid

e:

Bot

tom

vie

w:

Bac

k vi

ew:

mai

n vi

ew o

f th

e pa

rt th

at s

how

sm

ost d

etai

l.

proj

ectio

n up

war

d fr

om f

ront

view

.

view

to th

e ri

ght o

f th

e fr

ont.

view

to th

e le

ft o

f th

e fr

ont.

oppo

site

the

top

view

.

oppo

site

the

fron

t vie

w.

Prin

cipl

ePr

ojec

tions

:T

he p

rinc

iple

pro

ject

ions

are

calle

d fr

ont,

top

and

side

vie

ws.

The

pro

cess

of

proj

ectin

gth

e es

sent

ial v

iew

s in

to a

sin

gle

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e is

kno

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as o

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ectio

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t det

ail o

f th

e ob

ject

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er th

e or

thog

raph

ic v

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mpl

eted

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sho

uld

draw

par

alle

lre

cedi

ng li

nes

abou

t 45

degr

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gles

fTom

the

corn

ers

of th

e vi

ew(e

ither

toth

e ri

ght o

r to

the

left

) to

deve

lop

the

thre

e-di

men

sion

al e

ffec

t. T

he e

xten

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the

rece

ding

line

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abo

uton

e-ha

lfth

e le

ngth

that

wou

ld b

e sh

own

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anor

thog

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ing.

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itial

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the

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30 d

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er c

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draw

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fine

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sex

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lines

and

sho

w

with

arr

owhe

ads,

unb

roke

ndi

stan

ce g

iven

by

the

exce

pt w

here

the

dim

ensi

onis

dim

ensi

ons.

8

2829

LEA

DE

R

Fin

e, s

trai

ght l

ine

with

an

arro

whe

ad o

r ro

und

solid

dot

at o

ne e

nd. I

t is

usua

llydr

awn

at a

n an

gle.

Poi

nts

dire

ctly

to s

urfa

ce fo

r th

epu

rpos

e of

dim

ensi

onin

g or

l.ad

ding

a n

ote.

A d

ot m

ay b

eus

ed a

t the

end

of t

he s

trai

ght

line

whe

re r

efer

ence

is m

ade

asu

rfac

e ar

ea.

PR

EF

ER

RE

DA

ALT

ER

NA

TE

BE

i

CU

TT

ING

PLA

NE

LIN

E

A

A h

eavy

, bro

ken

line

mad

e up

of a

ser

ies

of s

hort

das

hes

alte

rnat

ely

spac

ed (

or s

olid

heav

y lin

es o

r lo

ng d

ashe

s).

Arr

owhe

ads

are

plac

ed a

trig

ht a

ngle

s to

the

cutti

ngpl

ane

lines

.

Indi

cate

whe

re a

n im

agin

ary

cut

is m

ade

thro

ugh

the

obje

ct. T

he

arro

w p

oint

s in

the

dire

ctio

n in

whi

ch th

e se

ctio

nsh

ould

be

view

ed. L

ette

rs n

ext t

oth

ear

row

head

s id

entif

y th

ese

ctio

n

in c

ases

whe

re m

ore

than

one

sect

ion

is s

how

n on

the

draw

ing.

ST

EE

L

ZIN

C, L

EA

D,

MIT

E M

ET

AL,

RA

BB

IT T

,A

ND

ALL

OY

S

SE

CT

ION

LIN

ES

/ //

//

CA

ST

IRO

N,

/ //

MA

LLE

AB

LE IR

ON

,/ G

EN

ER

AL

US

E F

OR

ALL

MA

TE

RIA

LSC

OP

PE

R,

BR

AS

S,

BR

ON

ZE

,A

ND

CO

MP

OS

ITIO

NS

MA

GN

ES

IUM

,A

LUM

INU

M,

AN

D IT

SA

LLO

YS

Ser

ies

of fi

ne li

nes

solid

or

solid

and

bro

ken

- ar

rang

ed in

spec

ific

patte

rns.

The

y m

aybe

sho

wn

eith

er s

trai

ght o

rcu

rved

. Whe

n sh

own

stra

ight

,th

ey a

re u

sual

ly d

raw

n at

45

degr

ee a

ngle

.

Indi

cate

the

imag

inar

y cu

tsu

rfac

e re

ferr

ed to

by

the

cutti

ngpl

an li

ne. T

o re

pres

entv

ario

uski

nds

of m

ater

ials

.

309

31

CH

AIN

LIN

EH

eavy

, bro

ken

line

mad

e up

of

Indi

cate

s th

e lo

catio

n an

d ex

tent

a se

ries

of lo

ng a

ndsh

ort

of a

sur

face

are

a.da

shes

alte

rnat

ely

spac

ed.

SH

OR

TH

eavy

, irr

egul

ar li

ne d

raw

nT

o sh

ow a

sho

rt b

reak

. To

BR

EA

K L

INE

free

hand

.co

nser

ve s

pace

on

adr

awin

g.T

o sh

ow a

par

tial s

ectio

n.

LON

G

BR

EA

K L

INE

Rul

ed, l

ight

line

with

free

hand

To

show

a lo

ng b

reak

. To

4/--

-zi

gzag

s.co

nser

ve s

pace

on

adr

awin

g.

PH

AN

TO

M

LIN

E

Ligh

t, br

oken

line

mad

e up

of

a se

ries

of o

nelo

ng a

nd tw

osh

ot d

ashe

s.

To

show

alte

rnat

e po

sitio

ns o

f apa

rt. T

o sh

ow r

elat

ions

hip

ofex

istin

g pa

rt to

new

par

t. T

osh

ow m

achi

ned

surf

aces

.

1 0

3°

9C

Iden

tifyi

hg.B

asiC

ilife

sR

efer

to th

e dr

awin

g ab

ove

to id

entif

yth

e ty

pes

and

lines

and

thei

r fu

nctio

ns.

Iden

tify

to fo

llow

ing

type

sof

line

s:ui

ven

the

func

tion

orfu

nctio

ns o

f

Ath

e fo

llow

ing

lines

:A B

onus

Que

stio

n:W

hat d

oes

Q h

ave

refe

renc

e to

?

0

13

3839

A n

ote

is le

ttere

din

form

atio

n co

ncer

ning

the

deta

ils o

f co

nstr

uctio

n. T

he n

ote

expl

ains

, spe

cifi

es, o

r re

fers

toth

e m

ater

ial a

nd/o

r pr

oces

ses

need

ed to

mak

e th

e

part

. Not

es h

elp

to c

onse

rve

spac

e on

the

prin

t, an

d to

sav

e tim

ein

pre

pari

ng th

e

draw

ing.

It i

s of

ten

show

n as

an

abbr

evia

tion

or s

ymbo

l.

Loca

l Not

es: W

hen

a no

teap

plie

s to

a p

artic

ular

par

t on

anob

ject

, it i

s ca

lled

a lo

cal

note

. Suc

ha

note

ispl

aced

nea

r on

e of

the

view

s re

pres

entin

g th

e pa

rt.

NOTE:

1. ALL CORNERS

WHICH PRODUCE

FLANGES

WHICH CLOSE UPON EACH

OTHER MUST

HAVE A R.I2 MAX

RELIEF AT THE

INTERSECTION.

2. WELDNUTS IN

THIS AREA MUST BE

ATTACHED AS SHOWN.

3. OPTIONAL

MATERIAL: MS02095

Gen

eral

Not

es: A

gen

eral

note

app

lies

to th

edr

awin

g as

aw

hole

. It i

s pl

aced

in a

n op

ensp

ace

away

from

the

view

s so

that

it c

an b

e se

enea

sily

.

MATERIAL;

1.1. NI MATERIAL:

BMS SHEET

011-11402 I.6MM

114k

NI PART NJ. (REF): SEE

TAB

4 0

14

41

Titl

e bl

ocks

con

sist

of:

A.

Nam

e of

par

t or

proj

ect

B.

ruan

tit, r

equi

red

C.

Mat

eria

l des

crip

tion

D.

Sca

le s

ize

used

E.

Dra

wn

byF

.C

heck

ed b

y

G.

Dra

win

g N

umbe

rH

.D

ates

I.T

oler

ance

sJ.

Ona

n/C

umm

ins

nam

eK

.D

raw

ing

Pro

ject

ion

3rd

Ang

le v

s. 1

st A

ngle

Pla

ce th

e co

rres

pond

ing

lette

rs in

the

Ona

n/C

umm

ins

title

blo

ck b

elow

:

lol )

41,1

1tik

iwill

1I

IP.

Ms m 1 14

inI o

ticsi

nicn

co

itiel

kIr

s

IPC

IAL

IIim

am.

1,...

.(L

er...

Is24

0-20

65E

..11

I11

MN

IAP

OLI

SM

MI1

1101

11 1

14$1

IN..

...ce

F.G

.GU

YIE

RR

EZ

os-is

-12

,.

it :,;:::

..

::.:

1a,

WA

YN

E A

.CLE

NE

NS

01-0

612

n"F

RA

ME

-ST

AT

OR

(FA

131

II.

,,, y I

*a4

AI 4

II11

1t4.

121L

BL

UIL

lim

1,...

.....

..ib

P 0

61.0

Or

hiO

M 0

11

17-1

/2

as/is

m G

AR

Y J

AR

EN

ER

0105

12...

"...,

,,,,,,

,,,,,,

tavo

11:=

=ti

y1

=11

,1h

W24

0-20

73no

rm--

2.2

Mir

" t,is

, II,

mom

s.r

woi

n`

t..A

..

md,

IIm

i al I

MH

C5

154'

3

Dim

ensi

ons

serv

e tw

o im

port

antf

unct

ions

on

a pr

int:

1.T

hey

give

the

size

s ne

eded

tofa

bric

ate

a pa

rt.

2.T

hey

indi

cate

the

loca

tion

whe

re c

ompo

nent

sof

the

part

sho

uld

be p

lace

d,

asse

mbl

ed, m

achi

ned

orw

elde

d.

Siz

e an

d lo

catio

n of

dim

ensi

ons:

00

KE

YL

LOC

AT

ION

SS

IZE

Frac

tiona

l Inc

h

NO

TE

: TH

ES

YM

BO

LS

IGN

IFIE

SD

IAM

ET

ER

.

3"1

4 4

1 6

4 5

In th

e de

cim

alin

ch s

yste

m (

U.S

. Cus

tom

ary)

,par

ts a

rede

sign

ed in

basi

c de

cim

al

incr

emen

ts, p

refe

rabl

e.0

2 in

ch a

nd a

re e

xpre

ssed

as tw

o-pl

ace

deci

mal

num

bers

.

Usi

ng th

e.0

2 m

odul

e, th

ese

cond

dec

imal

pla

ce(h

undr

eths

) is

an

even

num

ber

or

zero

. Siz

esot

her

than

thes

e,su

ch a

s .2

5 ar

e us

edw

hen

they

are

esse

ntia

l to

mee

t

desi

gn r

equi

rem

ents

.

Dec

imal

Inc

h E

xam

pe

3.00

1.38

.08

--11

1.0

11-

17.

4 6

4 7

Som

e di

men

sion

s ar

e sh

own

in f

ract

ion

inch

es. I

n th

eFr

actio

nal I

nch

Syst

em, s

izes

are

expr

esse

din

com

mon

fra

ctio

ns, t

he s

mal

lest

divi

sion

bei

ng 6

4ths

.

48

Som

e pr

ojec

ts a

re d

imen

sion

ed in

met

ric

or m

illim

eter

s. T

he S

I M

etri

cU

nite

s of

Mea

sure

men

t sho

ws

engi

neer

ing

draw

ings

in: m

illim

eter

s fo

r th

e lin

ear

mea

sure

and

mic

ro m

eter

s fo

r su

rfac

e ro

ughn

ess.

A m

illim

eter

val

ue o

f le

ss th

an o

neis

show

n w

ith a

zer

o to

the

left

of

the

deci

mal

poi

nt.

For

exam

ple:

0.2

not

.2 o

r .2

00.

26no

t.2

6

Ona

n-

SI M

etri

c U

nits

42.5

4"

(063

.87)

19

5051

1. P

lace

dim

ensi

ons

betw

een

view

sw

hen

poss

ible

(S

ee A

).

2. P

lace

the

dim

ensi

onlin

e fo

r th

esh

orte

st w

idth

, hei

ght,

and

dept

h,

near

est t

he o

utlin

e of

the

obje

ct

(See

B).

Par

alle

l dim

ensi

on li

nes

are

plac

ed

in o

rder

of t

heir

size

,m

akin

g th

elo

nges

t dim

ensi

on li

ne th

eou

term

ost l

ine.

3. P

lace

dim

ensi

ons

near

the

view

that

bes

t shi

ms

thle

sh-m

n"f

th°

cifi

c%

do ti

t...

obje

ct (

See

C).

20

1.20

---

--,.1

re--

- .7

0 -4

1

. 44

(A)

PLA

CE

DIM

EN

SIO

NS

BE

TW

EE

NV

IEW

S

1:

1.20-4

-1.4

541-

*-.3

0

(B)

PLA

CE

SM

ALL

ES

T D

IME

NS

ION

NE

AR

ES

T

TH

E V

IEW

BE

ING

DIM

EN

SIO

NE

D

____

___I

.40-

1.20

.34

r'4

0

-r

(C)

DIM

EN

SIO

N T

HE

VIE

W T

HA

T B

ES

T S

HO

WS

TH

E S

HA

PE

5 3

QUESTIOCS

1. What is the name of the object?2. What is the drawing number?3. How many pieces are to be made?4. Of what material is the part made?5. What is the overall width?6. What is the overall depth?7. What is the overall height?8. Which line or surface in the side view

represents surface 0 in the tap view?9. Which line or surface in the side view

represents surface ©in the top view?10. Which iine or surface in the side view

represents surface 0 in the top view?11. Which line or surface in the side view

represents surface of the front

view?12. What is the vertical height in the site

view from the surface represented byline° to that represented by line

13. What is the height of the step in the st eview from the bottom of the part to thesurface represented by surface

14. Which two dimensions (letters) in the top view

represent distance V in the side view?

7

LG)

F

15.

16.

17.

18.

19.

20.

21.

22.

23.24.25.

26.

Which two dimensions (letters) in the top viewrepresent distance W in the side view?

Which line or surface in the side viewrepresents surface M in the front view?

What is the height o line N 7

Which line or surface in the rant viewrepresents the surface in the side

view?Which line or surface in the top view

represents surfaceCD ?Which line or surface in the front view

represents surfaceWhich line or surface in the front view

represents surface® ?Which line or surface in the top viewrepresents surface 0 ?What type of line isWhat type of line isWhat units of measurement are used on

this drawing?Calculate dimensions 8 C 0 and W .

ANSWERS

1

2

3

4

5

6

7

8

9

13

11

13

14

15

16

17

18

19

20

21

22

23

24

25

26

QUANTITY

MATERIAL

2

MS

SCALE FULL SIZE

DRAWN

COUNTER CLAMPBAR

0

DATE

A-Et

54

PEST COPY AVAILABLE

Tol

eran

ce is

ano

ther

impo

rtan

t ele

men

t of

dim

ensi

onin

g. I

t is

afi

gure

giv

en a

plu

s

(+)

or m

inus

(-)

qua

lity.

It s

peci

fies

the

amou

nt o

f er

ror

allo

wed

whe

n m

akin

g a

part

.

Tol

eran

ces

are

used

to e

nsur

e th

e ac

cura

cy a

nd p

rope

r fi

t of

part

s.T

his

allo

ws

asse

mbl

y an

d co

nstr

uctio

n w

ith th

e m

inim

um o

f re

wor

k or

adju

stm

ent.

For

man

y pa

rts,

tole

ranc

es a

re s

tand

ardi

zed

and

are

foun

d in

pre

pare

d to

lera

nce

tabl

es.

1

10LE

RA

NC

E U

NLE

SS

OIN

ER

)114

pug

1E0

Pk

Inch

Ix

t,x

t°-

4.

Xt

.X

X t

a03

a,xx

t,x

xxt.0

150.

09-

1.99

'0.1

51.0

.08

001.

.200

#.00

6/..0

03

--1

5.00

9.9

940

10/.0

.10

.201

-.42

1I.0

08/..

001

010

.001

7.19

0.6/

-0.1

1.4

22..1

03i .

010/

%00

5m

17.5

021.

99i0

.30/

0.13

.704

-.99

94.

012/

..m.

22

55

+2.457

045

-.000

.480

56

S9E

ZL

S

Mat

eria

l Gau

geT

hick

ness

Die

Set

Ben

d A

llow

ance

Per

90%

Ben

d

20 G

A. C

RS

(.03

6")

100,

105

, 123

ID +

.012

" or

OD

- .0

60"

18 G

A. C

RS

(.04

8")

101,

106

, 119

, 124

, 129

ID +

.006

" or

OD

- .0

90"

16 G

A. C

RS

(.06

0")

101,

106

, 119

, 124

, 129

ID +

.020

" or

OD

- .1

00"

14 G

A. C

RS

(.07

5")

102,

107

, 118

, 125

, 130

ID +

.025

" or

OD

- .1

25"

12 G

A. C

RS

(.10

5")

127,

128

, 131

ID +

.023

" or

OD

- .1

87"

11 G

A. C

RS

(.12

0")

103,

108

, 113

, 116

, 126

, 132

ID +

.022

" or

OD

- .2

18"

10 G

A. H

RS

(.13

5")

103,

108

, 113

, 116

, 126

, 132

ID +

.045

" or

OD

- .2

25"

6 G

A. H

RS

(.18

7")

109

ID +

.029

" or

OD

- .3

45'

1/4

GA

. HR

S (.

250"

)11

0ID

+ .0

50"

or O

D -

.450

"

5 9

A: 2

4

60

Exa

mpl

e fr

om T

able

i soo

n

61B

: 25

62

Exa

mpl

e fr

om T

able

2,000-41

Mat,

I2ga1

CRS

Cut size calculation

using

outside (OS) dinensions

210

4,0

1,0 - (2 x 1107) =

Cut size calculation

using

inside (IS) dinensions

1.095

3,790

0,895

(2 x .023) =

B: 2

6

6364

MT

INSIDE

26 ga (.0179

.006

22 ga (.0299

.010

20 ga (.0359

.012

18 ga (.0478

.016

16 ga (.059)

.020

14 ga (.0747

.05

12 ga (.1046

.052

1/8

(.125)

.062

11 ga (.1192

.08.0

10 ga (.1345

8 ga (.1644

.082

3/16 (.1875

.094

1/4

(.2500

.125

Material

20 GA. CRS

16 GA

CRS

14 GA. CRS

12 GA. CRS

12 GA. CRS

10 GA. CRS

OUTSTDE

-

-.030

-.050

-.060

-.082

-.100

-.125

-.157

-.188

-.178

-.202

-.246

k-.281

I-.375

Prod. Set

100 or 105

101 or 106

102 or 107

103 or 108

104

103 or 108

=(.006

- .036)

Radius bend

=(.010

- .060)

R + 1/3 MT x 1.570

=1(.012

- .072)

21

(.016

- .098)

=(.020

- .120)

Outside R Bend

=(.025

- .150)

1 BA - 2R - 2141 =

A.e052

- .209)

=:.062

- .250)

Inside R Bend

=(.060

- .238)

1 BA - 2R =

=(.067

- .269)

=(.082

- .329)

R = Radius

*(.094

- .375)

BA - Bend Allowance

=(.125

- .500)

MT - Material Thickness

Air Bending

Difference

+ .015"/Bend

None

+ .007"/Bend

* .030"/Bend

None

+ .020"/Bend

(For Back Gauge Setting)

LVD Actual Bend Allowance

Flange QD - .035"

Flange OD - .050"

Flange OD - .060"

Flange OD - .095"

'

Flange OD - .080"

Flange OD - .115"

EXAMPLE:

A 10 GA. part which has two'bends to form a channel

will be 2 times .020" = .040" deviation with air bending.

This deviation can be either divided equally among

each

side or distributed differently to hold aclose tolerance

dimension.

(NOTE THE RES:-7S APPLY TO 900 BENDSJ--

C: 27

6566

MT

Insi

de+

Out

side .

26ga

( 9

179)

.006

-.03

0 =

(.00

6 -

.036

)

22ga

(.0

299)

.010

-.05

0 =

(.01

0 -

.060

)

20 g

a (.

0359

).0

12-.

060

=(.

012

- .0

72)

18ga

(.0

478)

.016

-.08

2 =

(.01

6 -

.098

)

16ga

(.0

59)

.020

-.10

0 =

(.02

0 -

.120

)

14ga

(.0

747)

.025

-.12

5 =

(.02

5 -

.150

)

12ga

(.1

046)

.052

-.15

7 =

(.05

2 -

.209

)

1/8

(.12

5).0

62-.

188

=(.

062

- .2

50)

11ga

(.1

192)

.060

-.17

8 =

(.06

0 -

.238

)

10ga

(.1

345)

.067

-.20

2 =

(.06

7 -

.269

)

8ga

(.16

44)

.082

-.24

6 =

(.08

2 -

.329

)

3/16

(.1

875)

.094

-.28

1 =

(.09

4 -

.375

)

1/4

(.25

00)

.125

-.37

5 =

(.12

5 -

.500

)

67C

: 28

68

Mat

eria

lPr

od.

Set

Air

Ben

ding

I

Dif

fere

nce

(For

bac

k ga

uge

setti

ng)

LVD

Act

ual B

end

Allo

wan

ce

20 G

A. C

RS

100

or 1

05+

.015

"/B

end

Flan

ge O

D -

.035

"

16 G

A. C

RS

101

or 1

06N

one

Flan

ge O

D -

.050

"

14 G

A. C

RS

102

or 1

07+

.007

"/B

end

Flan

ge O

D -

.060

"

12 G

A. C

RS

103

or 1

08+

.030

"/B

end

Flan

ge O

D -

.095

"

12 G

A. C

RS

104

Non

eFl

ange

OD

- .0

80"

10 G

A. C

RS

103

or 1

08+

.020

"/B

end

Flan

ge O

D -

.115

"

Exa

mpl

e: A

10

GA

par

twhi

ch h

as tw

o be

nds

to f

orm

a c

hann

el w

ill b

e 2

times

.020

" =

.040

" de

viat

ion

with

air

ben

ding

. Thi

s de

viat

ion

can

beei

ther

div

ided

equ

ally

am

ong

each

side

or

dist

ribu

ted

diff

eren

tly to

hol

d a

clos

e to

lera

nce

dim

ensi

on.

(Not

e th

e re

sults

app

ly to

90

degr

ee b

ends

) C: 2

9

6970

The

She

et M

etal

Dep

artm

ent h

as n

ewto

olin

g fo

r fo

rtn.

ng c

oppe

r bu

s ba

r. T

here

are

sepa

rate

upp

er a

nd lo

wer

die

s fo

r1/

4", 3

/8"

and

1/2"

rad

ius

and

thic

knes

s.Sa

mpl

es o

f ea

ch

mat

eria

l wer

e fo

rmed

to d

eter

min

e ac

tual

bend

allo

wan

ces.

Lis

ted

belo

w a

re th

ebe

nd

allo

wan

ces,

and

they

sho

uld

be u

sed

on a

llfo

rmed

cop

per

com

pone

nts.

Mat

eria

lB

end

Allo

wan

ce (

Per

Ben

d)

1/4"

Cop

per

OD

+ O

D -

.460

"

3/8"

Cop

per

OD

+ O

D -

.650

"

1/2"

Cop

per

OD

+O

D -

.875

"

Exa

mpl

e:C

ut s

ize

calc

ulat

ion

is 2

" +

3"

-.65

0=

.435

cut

leng

th

prp

7 1

D: 3

0

1/8

-.110

+.265

+.125 each bend

1/4

-.220

+.530

+.25 each bend

3/8

-.330

+.795

+.375 each bend

1/2

-.440

+1.060

+.500 each bend

E: 3

173

74