COMPUTER AIDED ENGINEERING DRAWING - iare.ac.in · PDF fileEngineering Drawing Instruments and...

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COMPUTER AIDED ENGINEERING DRAWING

LAB MANUAL

Year : 2017 - 2018

Course Code : AME103

Regulations : IARE-R16

Class : B.Tech I Semester

Branch : IT / CSE / ECE / EEE

Prepared By

Prof. VVSH PRASAD

Prof. BVSN RAO

Mr. B D Y SUNIL, Asst. Prof.

Ms. J SWETHA, Asst. Prof.

Ms. G KARUNYA, Asst. Prof.

INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous)

Dundigal-Hyderabad-500 043

2

INSTITUTE OF AERONAUTICAL ENGINEERING

(Autonomous)

Dundigal-Hyderabad-500 043

PROGRAM OUTCOMES

Program outcomes Level

Proficiency

assessed

by

PO1 Ability to apply acquired knowledge of science and engineering

fundamentals in problem solving.

H Assignments

and Tutorials

PO2 Ability to undertake problem identification and interpretation. S Tutorials

PO3 Ability to utilize Auto CAD approach in drawing. S Exams

PO4 Graduates will demonstrate an ability to identify and solve complex problems.

S Mini Projects

PO5 Graduate will be capable to use modern tools and packages available for

their professional arena.

H Assignments,

Exams

PO6 Understanding of the social, cultural responsibilities as a professional engineer in a global context.

H Assigning Mini Projects

PO7 Understanding the impact of environment on engineering designs based on

the principles of inter-disciplinary domains for sustainable development.

H Assignments

PO8 Ability to understand the role of ethics in professional environment and implementing them.

N ------

PO9 Competency in software development to function as an individual and in a

team of multidisciplinary groups.

H Assignments,

Tutorials and

Exams

PO10 Ability to have verbal and drawing skills to use effectively not only with

engineers but also with community at large.

N -----

PO11 Ought to have strong fundamentals in Mechanical Engineering and be able

to have lifelong learning required for professional and individual developments.

H Mini Projects

PO12 Be able to design, implement and manage projects in Mechanical

Engineering with optimum financial resources, environmental awareness

and safety aspects.

N ------

3

Program Specific Outcomes - Computer Science and Engineering

PSO1

Professional Skills: The ability to understand, analyze and develop computer programs in the

areas related to algorithms, system software, multimedia, web design, big data analytics, and

networking for efficient design of computer-based systems of varying complexity.

PSO2

Problem-Solving Skills: The ability to apply standard practices and strategies in software project

development using open-ended programming environments to deliver a quality product for

business success.

PSO3 Successful Career and Entrepreneurship: The ability to employ modern computer languages, environments, and platforms in creating innovative career paths, to be an entrepreneur, and a zest

for higher studies.

Program Specific Outcomes - Information Technology

PSO1 Professional Skills: The ability to understand, analyze and develop computer programs in the areas related to algorithms, system software, multimedia, web design, big data analytics, and

networking for efficient analysis and design of computer - based systems of varying complexity.

PSO2

Software Engineering Practices: The ability to apply standard practices and strategies in

software service management using open-ended programming environments with agility to deliver a quality service for business success.

PSO3

Successful Career and Entrepreneurship: The ability to employ modern computer languages,

environments, and platforms in creating innovative career paths, to be an entrepreneur, and a zest for higher studies.

Program Specific Outcomes - Electronics and Communication Engineering

PSO1

Professional Skills: An ability to understand the basic concepts in Electronics & Communication

Engineering and to apply them to various areas, like Electronics, Communications, Signal processing, VLSI, Embedded systems etc., in the design and implementation of complex systems.

PSO2

Problem-Solving Skills: An ability to solve complex Electronics and communication Engineering

problems, using latest hardware and software tools, along with analytical skills to arrive cost

effective and appropriate solutions.

PSO3

Successful Career and Entrepreneurship: An understanding of social-awareness &

environmental-wisdom along with ethical responsibility to have a successful career and to sustain

passion and zeal for real-world applications using optimal resources as an Entrepreneur.

Program Specific Outcomes - Electrical and Electronics Engineering

PSO1 Able to utilize the knowledge of high voltage engineering in collaboration with power systems in innovative, dynamic and challenging environment, for the research based team work.

PSO2

To explore the scientific theories, ideas, methodologies and the new cutting edge technologies in

renewable energy engineering, and use this erudition in their professional development and gain sufficient competence to solve the current and future energy problems universally.

PSO3 To be able to utilize of technologies like PLC, PMC, process controllers, transducers and HMI and

design, install, test, and maintain power systems and industrial applications.

UNITS TOPICS Portion coverage %

Individual Cumulative

1

INTRODUCTION TO ENGINEERING DRAWING: Introduction to

Engineering Drawing Instruments and accessories, types of lines,

Lettering practice and rules of Dimensioning, Geometrical Constructions-Basic Geometrical Shapes.

INTRODUCTION TO AUTOCAD: Familiarization of Graphical User

Interface(GUI), Toggle functional keys and tool bars, Drawing of closed

form entities like Line, Circle, Ellipse, Polygon etc and standard drawing templates.

10 10

2 DRAFTING AND MODELING SYSTEMS: Geometric commands,

layers, display control commands, editing, dimensioning, and solid modeling

15 25

3

ORTHOGRAPHIC PROJECTION: Principles of orthographic

projections – conventions – first and third angle projections. Projection

of points, straight lines, planes & regular solids (prisms, cylinders,

pyramids &cones)

25 50

4

ISOMETRIC PROJECTIONS: Principle of isometric projection,

isometric scale, isometric projections and isometric views, Isometric

projections of solids

25 75

5 TRANSFORMATION OF PROJECTIONS: Conversion of isometric views to orthographic views and conversion of orthographic views to

isometric views.

25 100

Book Type Code Author & Title

Text Book TB1,

TB2

1. N. D. Bhatt (2012), Engineering Drawing, 49th Edition, Charotar Publications, New Delhi.

2. C.M. Agarwal, Basant Agarwal, “Engineering Drawing”, Tata Mc Graw Hill,

2nd

Edition, 2013

References RB1 RB2

RB3

RB4

1. K. Venugopal, “ Engineering Drawing and Graphics”. New Age Publications, 2nd

Edition, 2010.

2. Dhananjay. A. Johle, “ Engineering Drawing”, Tata Mc Graw Hill, 1st Edition, 2008.

3. S. Trymbaka Murthy, “ Computer Aided Engineering Drawing”, I.K. International Publishers, 3

rd Edition, 2011.

4. A. K. Sarkar, A.P Rastogi, “ Engineering graphics with Auto CAD”, PHI Learning,

1st Edition, 2010.

Web References

1. http://nptel.ac.in/courses/112103019 2. http://www.autocadtutorials.net/

3. http://gradcab.com/questions/tutorial-16-for -beginner-engineering-drawing-I

E-Textbook 1. https://books.google.co.in/books?id=VRN7e09RqoC&pg=PA9&source=gbs_

toc_r&cad=4#v=onepage&q&f=false

Institute of Aeronautical Engineering, Dundigal

Department: Mechanical Engineering

Semester: I Section(s): CSE/EEE/ECE/IT

Computer Aided Engineering Drawing IA16-A1303 Lectures/week: 03

Course Instructor(s):

Course duration: 13 June 2016 – 19 November 2016

http://nptel.ac.in/courses/112103019

http://www.autocadtutorials.net/

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Unit-I

S. No Topic Exercise Mode Reference Book Page No Q. No

1 Lettering Lettering Practice Graph Book N.D.Bhatt 5 1,2

2 Basic Geometric

constructions Constructions Practice Graph Book N.D.Bhatt 5,6,7 1

3 Lettering Lettering Practice AutoCAD AutoCAD Manual

AutoCAD Manual

3

4 Basic Geometric

commands Commands Practice AutoCAD

AutoCAD

Manual

AutoCAD

Manual 3,4,5

5 Closed Form Entities

Closed Form Constructions

AutoCAD AutoCAD Draw Toolbar

AutoCAD Draw Toolbar

-

Unit-II


6 Geometric

commands Practice AutoCAD

AutoCAD

Manual 11 1

7 Layers, Display Control

Commands

Practice AutoCAD AutoCAD

Manual 12 2

8

Editing,

Dimensioning, And Solid

Modeling

Practice AutoCAD AutoCAD Manual

13 3

Unit-III


9 Projection Of

Points Projection Of Points AutoCAD

AutoCAD

Manual 14 1-10

10 Projection Of

Straight Lines

Projection Of Straight

Lines AutoCAD

AutoCAD

Manual 15 1-10

11 Projection Of

Planes Projection Of Planes AutoCAD

AutoCAD

Manual 16 1-10

12 Projection Of

Regular Solids

Projection Of Regular

Solids AutoCAD

AutoCAD

Manual 17 1-10

Unit-IV


13

Isometric

Projections And

Isometric Views

Isometric Projections AutoCAD AutoCAD

Manual 18 1-6

14

Isometric

Projections Of

Solids

Isometric Projections AutoCAD AutoCAD Manual

19 7-10

Unit-V


15

Conversion Of Isometric Views

To Orthographic

Views

Isometric Views to

Orthographic AutoCAD

AutoCAD

Manual 20 1-3

16

Conversion Of Orthographic

Views To

Isometric Views.

Isometric Views to

Orthographic AutoCAD

AutoCAD

Manual 21 4-6

17

List of

Assignment

sheets

Assignment sheets AutoCAD AutoCAD

Manual 22 -

6

AUTOCAD COMMANDS

DRAW TOOLBAR

Command Description

Line (l) Draws a line from one point to another

Polyline (pl) Draws a line/curve with multiple control points

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Rectangle (rec) Draws a rectangle by defining two corners

Polygon Draws a polygon by number of edges

Circle (c) Draws a circle with given radius or diameter

Spline (spline) Draws a spline connecting multiple points

Hatch (h) Fills an enclosed area or selected objects with a hatch pattern

Divide (div)

Divide an object into certain length or perimeter segment

MODIFY TOOLBAR

Command Description

Erase (e) Erases the selected object

Copy (co) Copies the selected object from one place to

another

Mirror (mi) Mirrors objects along the line that you define

Offset (o) Offsets objects to the distance you specify

Move (m) Moves the selected objects from one place to another

Scale (sc) Scale objects by the ratio you specify

Trim (tr)

Trim objects along specified objects

Extend (ex)

Extend objects to reach specified objects

Polyline edit (pe) Adds a line to close/join an open polyline

Break (br) Can make a cut in continuous line

Fillet (fillet) Connects two objects with an arc that is tangent

to the objects and has a specified radius

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SHORTCUT KEYS

F1 Displays Help

F2 Expands the Command Line history when the Command Line window is floating, or

displays the Text window when the Command Line window is docked

F3 Toggles OSNAP

F4 Toggles 3DOSNAP (AutoCAD only) or Toggles TABMODE (AutoCAD LT only)

F5 Toggles ISOPLANE

F6 Toggles UCSDETECT (AutoCAD only)

F7 Toggles GRIDMODE

F8 Toggles ORTHOMODE

F9 Toggles SNAPMODE

F10 Toggles Polar Tracking

F11 Toggles Object Snap Tracking

F12 Toggles Dynamic Input

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LETTERING

1. Using Grid and Snap Commands in AutoCAD Create Alphabets A-Z, a-z, numbers 0-9.

2. Using Grid and Snap Commands in AutoCAD Software create college name, Branch, name and

roll number of individual students.

12

1.

13

2.

14

3.

15

Projection of Points Problem1. Draw the projection of the following points on the same XY line, keeping convenient

distance between each projector. Name the Quadrants in which they lie.

A- 30mm above HP & 35mm infront of VP. B- 35 mm above HP & 40mm behind VP.

C- 40 mm above HP & on VP.

D- D-35mmbelowHP&30mminfrontofVP.

Problem2. Draw the projection of the following points on the same XY line, keeping convenient

distance between each projector. Name the Quadrants in which they lie.

E- 30 mm below HP & 25 mm behind VP. F- 35 mm below HP & 30mm

infront of VP G- On HP & 30mm infront of

VP.

H- On HP & 30mm behind VP.

Problem3. Draw and state the quadrants in which the following points are located. Assume any

distance.

A- Front view below XY line & top view above XY line

B- Front & Top views are below XY line.

C- Front& Top views are above XY line.

D- Front view above XY line & top view below XY line.

CRITICAL THINKING

Problem4. A point 30mm above XY line is the front view of two points A & B. The top view of A is 40 mm behind VP & the top view of B is 45 mm front of VP draw the projection of the points &

state the quadrants in which the points are situated.

Problem5. A point A is 30mm infront of VP and 40 mm above HP. Another point B is 20mm

behind VP & 35mm below HP. The horizontal distance between the points measured parallel to XY

line is 60mm. Draw the three projections of the points. Join their front and top views.

Problem6. Draw all the three views of a point P lying 60mm below HP 70mm infront of VP and 40

mm from the RPP. Also state the quadrants in which it lies.

Problem7.A point P is on HP and 30 mm in front of VP. Another point Q is on VP and below HP.

The line joining their front views makes an angle of 30° to XY line while the line joining their top

views makes an angle of 45° with XY line. Find the distance of the point Q from HP.

Problem8. Two points R & S on HP. The point R is 35 mm infront of VP. While S is 50mm behind VP. The line joining their top views makes an angle of 40° with XY. Find the horizontal distance

between the two projectors.

Problem9. A point G is 25 mm below HP & situated in the third quadrant its shortest distance from

XY line is 45mm. Draw its projections and find its distance from VP.

Problem10. A point S is in the first quadrant and equidistance of 50mm from all the three principle

planes. Draw the projection of the point. Draw all the three views of the point.

16

Projection of lines

Problem 1. A line PQ 90mm long is in the HP and makes an angle of 300 with the VP. Its end P is 25mm infront

of the VP. Draw its projections.

Problem 2. The length of the top view of a line parallel to the VP and inclined at 450 to the HP is 50mm. One

end of the line is 12mm above the HP and 25mm infront of the VP. Draw the projections of the line and

determine its true length.

Problem 3. The front view of a 75mm long line measures 55mm. The line is parallel to the HP and one of its

ends is in the VP and 25mm above the HP. Draw the projections of the line and determine its inclination with

the VP.

Problem 4. Draw the projections of a 75mm long straight line which is parallel to both th HP and VP and 25mm

from each.

CRITICAL THINKING

Problem 5. A line AB 80mm long has its end A 20 mm above the HP and 30 mm infront of VP. It is inclined at

300 to HP and 45

0 to VP. Draw the projection of the line and find apparent lengths and apparent inclinations.

Problem 6. A line AB 80mm long is inclined to HP at 300 and inclined to VP at 45

0. The end A touches both HP &

VP. Draw front and top views of line and determine their lengths. Also measure the perpendicular distance of end B

from both HP and VP.

Problem 7. A line AB has its end A 20 mm above the HP and 30 mm infront of the VP. The other end B is 60 mm

above the HP and 45mm infront of VP. The distance between end projectors is 70 mm. Draw its projections.

Determine the true length and apparent inclinations.

Problem 8. A line AB has its end A 20 mm above the HP and 15 mm infront of the VP. The other end B is 60 mm

above the HP & 45mm infront of VP. The distance between end projectors is 70 mm. Draw its projections.

Determine the apparent lengths and true inclinations.

Problem 9. A line PQ 85 mm long has its end P 10 mm above the HP and 15 mm infront of the VP. The top view

and front view of line PQ are 75 mm and 80mm respectively. Draw its projections. Also determine the true and

apparent inclinations of the line.

Problem 10. The top view of a line 75 mm long measure 50 mm. The end P is 30 mm infront of VP and 15 mm

above HP. The End Q is 15 mm infront of VP and above HP. Draw the Projections of the line and find its true

inclinations with HP and VP.

Problem 11. A line AB measuring 70 mm has its end A 15mm infront of VP and 20 mm above HP and the other

end B is 60mm infront of VP and 50 mm above HP. Draw the projections of the line and find the inclinations of

the line with both the reference planes of projections.

17

PROJECTION OF PLANES

1. An square ABCD of 40mm side has a corner on the HP and 20mm infront of the VP. All the sides of the

square are equally inclined to the HP and parallel to the VP. Draw its projections.

2. A regular pentagon of 25mm side has one side on the ground. Its plane is inclined at 450 to the HP and

perpendicular to the VP. Draw its projections.

3. Draw the projections of a circle of 50mm diameter having its plane vertical and inclined at 300 to the VP. Its

center is 30mm above the HP and 20mm infront of the VP.

CRITICAL THINKING

4. An equilateral triangular lamina of 25mm side lies with one of its edges on HP such that the surface of

the lamina is inclined to HP at 60°. The edge on which it rests is inclined to VP at 60°. Draw the

projections.

5. An equilateral triangular lamina of 25mm side lies on one of its sides on HP. The lamina makes 45°

with HP and one of its medians is inclined at 40° to VP. Draw its projections.

6. A triangular lamina of 25mm side rests on one of its corners on VP such that the median passing

through the corner on which it rests is inclined at 30° to HP and 45° to VP. Draw its projections.

7. A triangular plane figure of sides 25mm is resting on HP with one of its corners, such that the surface

of the lamina makes an angle of 60° with HP. If the side opposite to the corner on which the lamina

rests makes an angle of 30° with VP, draw the top and front views in this position.

8. A triangular plane lamina of sides 25mm is resting on HP with one of its corners touching it, such

that the side opposite to the corner on which it rests is 15mm above HP and makes an angle of 30°

with VP. Draw the top and front views in this position. Also determine the inclination of the lamina to

the reference plane.

9. A 30°-60° setsquare of 60mm longest side is so kept such that the longest side is in HP, making an

angle of 30° with VP. The set square itself is inclined at 45° to HP. Draw the projections of the

setsquare.

10. An isosceles triangular plate of negligible thickness has a base 25mm long and altitude 35mm. It is so

placed on HP such that in the front view it is seen as an equilateral triangle of 25mm sides with the side

that is parallel to VP is inclined at 45° to HP. Draw its top and front views. Also determine the

inclination of the plate with the reference plane.

18

PROJECTION OF SOLIDS

1. Draw the projections of a triangular prism base 40mm side and axis 50mm long resting on one of its bases on the HP

with a vertical face perpendicular to the VP.

2. A cube of 50mm long edges, is resting on the HP with its vertical faces equally inclined to the VP draw its

projections.

3. Draw the projections of a hexagonal pyramid base 30mm side and axis 60mm long having its base on the HP and one

the edges of the base inclined at 450 to the VP.

CRITICAL THINKING

4. A square prism 35mm sides of base and 60mm axis length rests on HP on one of its edges of the base which is

inclined to VP at 30º. Draw the projections of the prism when the axis is inclined to the HP at 45º.

5. A square prism 35mm sides of base and 60mm axis length rests on HP on one of its corners of the base such

that the two base edges containing the corner on which it rests makes equal inclination with HP. Draw the

projections of the prism when the axis of the prism is inclined to HP at 40º and appears to be inclined to VP at

45º.

6. A square prism 35mm sides of base and 60mm axis length rests on HP on one of its corners of the base such

that the two base edges containing the corner on which it rests makes equal inclinations with HP. Draw the

projections of the prism when the axis of the prism is inclined to HP at 40º and to VP at 30º.

7. A square prism 35mm sides of base and 60mm axis length rests on HP on one of its edges of the base. Draw

the projections of the prism when the axis is inclined to the HP at 45º and VP at 30º.

8. A pentagonal prism 25mm sides of base and 60mm axis length rests on HP on one of its edges of the base which

is inclined to VP at 30º. Draw the projections of the prism when the axis is inclined to HP at 40º.

9. A pentagonal prism 25mm sides of base and 60mm axis length rests on HP on one of its edges of the base.

Draw the projections of the prism when the axis is inclined to HP at 40º and VP at 30º.

10. A pentagonal prism 25mm sides of base and 60mm axis length rests on HP on one of its corners of the base

such that two base edges containing the corner on which it rests make equal inclination with HP. Draw the

projections of the prism when the axis of the prism is inclined to HP at 40º and appears to be inclined to VP

45º.

19

ISOMETRIC PROJECTION

1. Using four center method draw the isometric views of a circle of diameter 50mm when it is on the HP and on the

VP.

2. Three views of a block are given in the figure. Draw its isometric projections.

3. Draw the isometric view of the frustum of 60mm height of the hexagonal pyramid shown in figure.

CRITICAL THINKING

4. A sphere of diameter 50mm rests centrally on top of a cube of sides 50mm. Draw the isometric projections of

the combination of solids.

5. Draw the isometric projection of a rectangular prism of 60 x 80 x 20mm thick surmounting a tetrahedron of

sides 45mm such that the axes of the solids are collinear and at least one of the edges of both the solids are

parallel to VP.

6. Following figure shows the front view of combination of solids consisting a cut sphere and frustum of a cone and

a square pyramid. Draw the isometric projection of the combination of solids.

20

7. A regular pentagonal prism of base side 30mm and axis 60mm is mounted centrally over a cylindrical block

of 80mm diameter and 25mm thick. Draw the isometric projection of the combined solids.

8. A sphere of diameter 30mm rests on the frustum of a hexagonal pyramid base 30mm, top face 18mm side and

height 50mm, such that their axis coincides. Draw the isometric projection of the combined solids.

9. A pentagonal pyramid of base side 30mm and axis length 60mm is resting on HP on its base with a side of

perpendicular to VP. Draw the isometric projections.

10. Following figure shows the front and side views of the solid. Draw the isometric projection of the solid.

21

ISOMETRIC PROJECTION TO ORTHOGRAPHIC PROJECTION

1. Draw the Front View, Top View and Both Side Views for the following figure. (All dimensions are in mm).

2. Figure 1.0, shows an isometric view of an object. Draw the following views. i) Front view in direction of

arrow, ii) Top view, and iii) Side view from right.


arrow, ii) Top view, and iii) Side view from left.

Fig 2.0

22


arrow, ii) Top view, and iii) Side view from right.

Figure 3.0

5. A cone of base diameter 60 mm and height 70 mm is resting on its base on HP. It is cut by a plane

perpendicular to the VP and inclined at 300 to the HP. The plane meets the axis at a distance of 25 mm from

the apex. Draw the isometric view of the truncated cone.

6. A cone, diameter of base 45mm and height 50mm is mounted centrally on the top of a square slab of

thickness 10mm & side 65mm. Draw the isometric projection of the combined solid.

23

LIST OF ASSIGNMENT SHEETS

Sheet.

No Topic

Reference

Book

Page

No Q. No

Date of

Submission Marks

A-1 Basic

Constructions N.D.Bhatt 18 1(a-g)

A-2 Projection of

points AutoCAD

Manual 14 6-10

A-3 Projection of

Straight lines

AutoCAD

Manual 15 6-10

A-4 Projection of

Planes AutoCAD

Manual 16 6-10

A-5 Projection of

Solids

AutoCAD

Manual 17 6-10

A-6 Isometric Projection

AutoCAD Manual

18 4,5,6

A-7 Isometric

Projection

AutoCAD

Manual 19 7-10

A-8 Transformations AutoCAD

Manual 21 5,6

COMPUTER AIDED ENGINEERING DRAWING - iare.ac.in · PDF fileEngineering Drawing Instruments and...

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