COMPUTER AIDED ENGINEERING DRAWING
[As per Choice Based Credit System (CBCS) scheme]
(Effective from the academic year 2015 -2016)
SEMESTER - I/II
Subject Code
-15CED14/15CED24 IA Marks 20
Number of
Lecture Hours/Week -6 (2T + 4L)
Exam Marks
80
Total Number
of Lecture Hours -84
Exam Hours -03
CREDITS - 04
Course
objectives:
Engineering
drawing is an important tool for all Engineers and for many
others
professionals. It is the language of Engineers. Engineering Drawing
communicates
all needed information from the engineer who designed a part
to the
workers who will manufacture it.
The aim of
the subject is to equip students with the fundamentals of
Computer
Aided Engineering Drawing and to further the ability to
communicate
information by graphical means.
Module -1
Introduction to Computer Aided Sketching
Introduction,
Drawing Instruments and their uses, BISconventions, Lettering, Dimensioning and
free hand practicing.Computer screen, layout of the software, standard toolbar/menus
and description of most commonly used tool bars,navigational tools. Co-ordinate
system and reference planes. ofHP,VP, RPP & LPP. of 2D/3D environment. Selection of drawingsize
and scale. Commands and creation of Lines, Co-ordinatepoints, axes, poly-lines,
square, rectangle, polygons, splines,circles, ellipse, text, move, copy,
off-set, mirror, rotate, trim,extend, break, chamfer, fillet, curves,
constraints viz. tangency,parallelism, inclination and perpendicularity.
Dimensioning, line
conventions,
material conventions and lettering.
06 Hours
Module -2
Orthographic
projections
Introduction,
Definitions - Planes of projection, reference line and conventions employed,
Projections of points in all the four quadrants, Projections of straight lines
(located in First quadrant/first angle only), True and apparent lengths, True
and apparent inclinations to reference planes (No application problems).
Orthographic
Projections of Plane Surfaces (First Angle Projection Only)
Introduction,
Definitions–projections of plane surfaces–triangle, square, rectangle, rhombus,
pentagon, hexagon and circle, planes in different positions by change of
position method only (No problems on punched plates and composite plates).
20Hours
Module-3
Projections of Solids (First angle Projection
only)
Introduction,
Definitions – Projections of right regular tetrahedron, hexahedron (cube),
prisms, pyramids, cylinders and cones in different positions (No problems on
octahedrons and combination solid).
28 Hours
Module-4
Sections And Development of Lateral Surfaces
of Solids
Introduction,
Section planes, Sections, Section views, Sectional views, Apparent shapes and
True shapes of Sections of right regular prisms, pyramids, cylinders and cones
resting with base on HP. (No problems on sections of solids)
Development
of lateral surfaces of above solids, their frustums and truncations. (No
problems on lateral surfaces of trays, tetrahedrons, spheres and transition
pieces).
15Hours
Module-5
Isometric
Projection (Using Isometric Scale Only)
Introduction,
Isometric scale, Isometric projection of simple plane figures, Isometric
projection of tetrahedron, hexahedron(cube), right regular prisms, pyramids,
cylinders, cones, spheres, cut spheres and combination of solids (Maximum of
three solids).
15 Hours
Course
outcomes:
After
studying this course,
1. Students
will be able to demonstrate the usage of CAD software.
2. Students
will be able to visualize and draw Orthographic projections,
Sections of
solids and Isometric views of solids.
3. Students
are evaluated for their ability in applying various concepts to solve
practical
problems related to engineering drawing.
Question
paper pattern:
1. Module -1
is only for practice and Internal Assessment and not for examination.
2. Question
paper for each batch of students will be sent online by VTU and
has
to be downloaded before the commencement of Examination of each
batch.
The answer sheets will have to be jointly evaluated by the Internal &
External examiners.
3. A maximum
of THREE questions will be set as per the following pattern (No
mixing of
questions from different Modules).
Q. No.
|
From Chapters
|
Marks Allotted
|
1
|
Module 2(Choice between (Points+Lines
or Planes)
|
25
|
2
|
Module 3
|
30
|
3
|
Module 4 or Module 5
|
25
|
4
|
Total
|
80
|
1
|
10
|
15
|
25
|
2
|
12
|
18
|
30
|
3
|
13
|
12
|
25
|
Total Marks
|
35
|
45
|
80
|
Students
have to submit the computer printouts and the sketches drawn on
the graph
sheets at the end of the examination. Both Internal & External
examiners
have to jointly evaluate the solutions (sketches) and computer
display
& printouts of each student for 80 marks (35 marks for solutions &
sketches +
45 marks for computer display and printouts) and submit the
marks list
along with the solution (sketches) on graph sheets & computer
printouts in
separate covers.
4. Each
batch must consist of a minimum of 10 students and a maximum of 12 students. 5.
Examination can be conducted in parallel batches, if necessary.
5.
Examination can be conducted in parallel batches, if necessary.
Text Books:
1)
Engineering Drawing - N.D. Bhatt & V.M. Panchal, 48th edition, 2005-
Charotar Publishing House, Gujarat.
2)
"Computer Aided Engineering Drawing" by Dr C N Chandrappa, Dr B
Sudheer Premkumar Dr. M H Annaiah, Fifth edition, New Age International
Publishers.
Reference
Books:
1) Computer
Aided Engineering Drawing - S. Trymbaka Murthy, - I.K. International Publishing
House Pvt. Ltd., New Delhi, 3rd revised
edition- 2006.
2)
Engineering Graphics - K.R. Gopalakrishna, 32nd edition, 2005- Subash
Publishers Bangalore.
3)
Fundamentals of Engineering Drawing with an Introduction to Interactive
Computer Graphics for Design and Production- Luzadder Warren J., Duff John M.,
Eastern Economy Edition, 2005- Prentice-Hall of India Pvt. Ltd., New Delhi.
4) A Primer on Computer Aided Engineering
Drawing-2006, Published by VTU, Belgaum.
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