INSTRUCTORMUHAMMAD AAMIR KHAN

aamir5500@gmail.com

Bachelor’s Degree in Mechanical Engineering from UET,Peshawar,2004

Master’s Degree in Mechatronics Engineering from Loughborough University, UK,2007

• Since 2008, teaching in WEC as Lecturer/ Assistant Prof

Class Introduction

2

• Name• Belong From?• Qualification• Future career aspirations• Goals in life• Hobbies • Time you devote for your studies• 1 weakness• 1 strength • Grade in F.Sc / B. Sc / DAE

ME- 102ENGINEERING DRAWING & GRAPHICS

04/18/2023 3

Credit Hours Theory + Practical

(0) (2)

WEC

Class Structure & Policies

4

• Attendance Mandatory• Attendance marked as absent after 5

minutes

• Assignments• Regular home work and in class quizzes• Home work due as specified• 50% off for late home work

• Practicals• Examinations

• As per university policies

Course Outline

04/18/2023 5

PART – I•IntroductionTypes of lines, lettering, dimensioning, use of pencil and drawing instruments, planning of drawing sheet

•ProjectionsTypes of projections, orthographic projections, plane of projections, four quadrants, projection of points, projection of straight lines, examples with different quadrants, traces of a line, true length of a line, inclination to both the planes, projections of oblique and auxiliary planes.

•Loci of points and generated curvesLoci of points and straight lines, Cycloid, Epicycloid, involute, archemedian spiral.

Course Outline

04/18/2023 6

• Development of solidsTypes of solids, polyhedra, solids of revolution, prism, pyramid,

cylinder, cone, sphere.

• Intersection of surfacesIntersection of : cylinder and cylinder, cylinder and cone, cone

and cone, cone and prism.

• Projection of solidsProjection of various solids in simple position and inclined

positions.

• Section of solids True shape of section on auxiliary plane of various solids.

continued…

Course Outline

04/18/2023 7

PART - II• Isometric and pictorial projections of solids / machine parts,

Making of free hand sketches from solid objects and from orthographic projections. Sections of joints, screw thread systems, nuts and bolts, keys and cotter, coupling and simple bearings, pipe connections and engines details, preparation of assembly drawings, introduction to computer aided engineering drawing and use of software / package.

RECOMMENDED BOOKS• Engineering Drawing and Graphics by N.D.Bhatt. 49th Edition.• A First Year Engineering Drawing by A.C.Parkinson. 6th Edition.

Introduction

Standards are set of rules that govern how technical

drawings are represented.

Drawing standards are used so that drawings convey

the same meaning to everyone who reads them.

ISO International Standards Organization

Standard Code

ANSI American National Standard InstituteUSA

JIS Japanese Industrial StandardJapan

BS British StandardUK

AS Australian StandardAustralia

Deutsches Institut für NormungDINGermany

Country Code Full name

Partial List of Drawing Standards

JIS Z 8311 Sizes and Format of Drawings

JIS Z 8312 Line Conventions

JIS Z 8313 Lettering

JIS Z 8314 Scales

JIS Z 8315 Projection methods

JIS Z 8316 Presentation of Views and Sections

JIS Z 8317 Dimensioning

Code number Contents

Traditional Drawing Tools

Traditional Drawing Tools

DRAWING TOOLS

1. T-Square 2. Triangles

DRAWING TOOLS

3. Adhesive Tape 4. Pencils

2H or HB for thick line4H for thin line

DRAWING TOOLS

6. Compass

DRAWING TOOLS

9. Circle Template 10. Tissue paper

DRAWING TOOLS

11. Sharpener 12. Clean paper

DRAWING TOOLS

Drawing space Drawingspace

Title block

d

d

c

c

cBorder lines

1. Type X (A0~A4) 2. Type Y (A4 only)

Orientation of drawing sheet

Title block

Sheet size c (min) d (min) A4 10 25 A3 10 25 A2 10 25 A1 20 25 A0 20 25

TITLE BLOCK

Drawing Sheet

Trimmed paper ofa size A0 ~ A4.

Standard sheet size (JIS)

A4 210 x 297

A3 297 x 420

A2 420 x 594

A1 594 x 841

A0 841 x 1189

A4

A3

A2

A1

A0(Dimensions in millimeters)

Drawing Scales

Scale is the ratio of the linear dimension of an element

of an object shown in the drawing to the real linear

dimension of the same element of the object.

Size in drawing Actual size

Length, size

:

Drawing Scales

Designation of a scale consists of the word “SCALE”

followed by the indication of its ratio, as follow

SCALE 1:1 for full size

SCALE X:1 for enlargement scales

SCALE 1:X for reduction scales

Basic Line Types

Types of Lines AppearanceName according

to application

Continuous thick line Visible line

Continuous thin line Dimension line

Extension line

Leader line

Dash thick line Hidden line

Chain thin line Center line

NOTE : We will learn other types of line in later chapters.

Visible lines represent features that can be seen in the

current view

Meaning of Lines

Hidden lines represent features that can not be seen in

the current view

Center line represents symmetry, path of motion, centers

of circles, axis of axisymmetrical parts

Dimension and Extension lines indicate the sizes and

location of features on a drawing

Example : Line conventions in engineering drawing