03 engineering drawings

8/10/2019 03 Engineering Drawings

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Engineering Graphics & Manual DrawingEngineering Graphics & Manual Drawing


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Engineering graphicsEngineering graphics Drawings are widely used in engineering applications:

manufacturing, design, structural, electrical, etc.

Standards and conventions

To ensure everybody using the same method

Commonly used:

ANSI, AS!, IS", #IS, S, DIN, $S

a w you earn &roducing engineering drawings

Interpreting engineering drawings

'raphics theory, visuali(ation,

standards, conventions, Applications, etc.


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Engineering graphicsEngineering graphics E.g. Anatomy of a technical drawing

15

0

R2.5

10


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Drawing layoutDrawing layout One of the important aspect in technical

drawing is the layout What is drawing layout?

Example of engineering drawing with layout aper si!e

"#omponents$ of a layout

Our layout


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Drawing layoutDrawing layout Drawing layout is the standard template and

components of a drawing

E.g.


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Drawing layoutDrawing layout Drawing sheets ) paper si(es

*sually based on +A+ series

Drawing sheets material

paper, linen, plastic film Drawing sheet layout

Sheet frames or border

A1

A2

A3

A4

A4

*sually -mm for A / A0,0mm for others

Title bloc1 or title frame

2epresents generalinformation source for adrawing

*sually at bottom righthandcorner

Designation Dimensions

A( )*+ mm x ++), mm

A+ -,* mm x )*+ mm

A *( mm x -,* mmA/ ,0 mm x *( mm

A* +( mm x ,0 mm

A- +*, mm x +( mm


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The ISO 'A' Series

%he ISO 'A' series of sheet si!es is asedon a constant width to length ratio of

+12.

%he A0 si!e is defined as ha3ing an areaof one s4uare meter. %his allows paper

aper si!eaper si!e additional infoadditional info

s4uare meter.

Each smaller sheet si!e is exactly half thearea of the pre3ious si!e. ie. 5f you cut anA0 sheet in half you get two A1 sheets65f you cut an A1 sheet in half you get twoA2 sheets6 and so on 7

Source: http://www.metrication.com/drafting/paper.htm


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aper si!eaper si!e additional infoadditional info

%his relationship of +1 2 is particularly important forreduction onto microfilm8 or reduction and enlargementon photocopiers. All metric e4uipment including microfilm

cameras8 microfilm printers8 photocopiers8 and e3endrawing pen si!es8 are designed around this ratio. %hisma'es the process of archi3ing drawings8 resi!ing8 andmodifying drawings easy.


A( )*+ mm x ++), mm

A+ -,* mm x )*+ mm

A *( mm x -,* mmA/ ,0 mm x *( mm

A* +( mm x ,0 mm

A- +*, mm x +( mm

Source: http://www.metrication.com/drafting/paper.htm


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9( +((( mm x +*+* mm

9+ 0(0 mm x +((( mm

Designation Dimensions (mm) Dimensions (in)

US Engineering:

A:;5 A +-., mm x 0,.* mm ).-< x ++ 8 NTS ) the drawing is not drawn to a certainscale

2ecommended scale

0:0 for full si(e

-:0 for twice full si(e 0:0 for ten times full si(e

for reduced si(e

0:- for half full si(e

0:0 for tenth full si(e

other common scale 0:6, 0:-, 0:6, 0:0, 0:6 etc.

Actual

size1:1

2:1 1:2


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#onclusions#onclusionsWhat has een co3ered today1 Different types of drawing

;'etching techni4ues

Drawing layout & title loc' ettering

;cale

Exercise>eferences1F Engineering Drawing8 A.W. 9oundy8 McGrawFill8 (((F Cundamentals of Graphics #ommunication /rd Edition8 Gary 9ertoline & Eric Weie8 McGrawFill

03 engineering drawings

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