MEC136:ENGINEERING GRAPHICS AND DIGITAL FABRICATION
L:2 T:2 P:0 Credits:4
Course Outcomes: Through this course students should be able to
CO1 :: understand the fundamentals of engineering drawing including usages of drawing tools,
line types, dimensioning, letter-writing, scales and AutoCAD software.
CO2 :: recognize the conceptual framework of orthographic projections of points, lines and basic
commands of AutoCAD software.
CO3 :: apply the knowledge to draw the orthographic and sectional views and to create 2D
drawings on AutoCAD software.
CO4 :: acquaint the techniques to develop the isometric views and surfaces of common
geometries and to create 3D models on AutoCAD.
CO5 :: impart the conceptual understanding of digital fabrication and rapid prototyping
techniques.
CO6 :: learn and discuss the varied important aspects of several rapid prototyping systems.
Unit I
Introduction to Engineering Drawing : Conceptual framework of drawing instruments, line types,
dimensioning, single stroke vertical gothic letter writing, scales-plain and diagonal, introduction to
AutoCAD interface- units, limits, navigation, OSNAP, ortho, and UCS
Unit II
Projection of Points and Lines : Introduction, principles of orthographic projections, orthographic
projection of points and lines, concept of traces, AutoCAD commands- line, circle, arc, polyline, move,
copy, trim, text, and dimensioning style, hands-on-practice on AutoCAD
Unit III
Orthographic and Sectional Views : Introduction, principles, importance, orthographic and
sectional (full, half, and offset) views in both first and third angle projections systems, practice,
AutoCAD commands- linetype and its properties, rectangle, polygon, ellipse, hatch, scale, fillet,
chamfer, array, erase, explode, offset, and extend, hands-on-practice on 2D drawings
Unit IV
Isometric Views and Development of Surfaces : Introduction, terminology, isometric scale,
isometric views of prisms and pyramids, dimensioning, importance of surface development,
development methods, surface development of cylinder, prisms, cone and pyramids, AutoCAD
commands for 3D- 3P UCS rotation, standard shapes, extrude, revolve, presspull, subtract, union,
orbit, and visual styles, hands-on-practice on 3D drawings
Unit V
Introduction to Digital Fabrication : Introduction, needs of digital manufacturing, prototype- types
and roles, rapid prototyping (RPT)-fundamentals, phases, classification, process chain- modelling-data
conversion-checking-building-postprocessing, advantages, conversion of 3D model to STL file, hands-
on-practice on 2D and 3D drawings
Unit VI
Rapid Prototyping Systems : Liquid-based SLA- introduction, specifications, apparatus, process,
photopolymers, photopolymerization, layering, applications, solid-based LOM- introduction, process-
preprocessing-building-postprocessing, materials, principle, advantages, disadvantages, applications
(RPT), powder-based SLS- process, SLS materials, principle (SLS), advantages (SLS), disadvantages
(SLS), applications (SLS)
Text Books:
1. ENGINEERING DRAWING WITH AN INTRODUCTION TO AUTOCAD by DHANANJAY JOLHE,
MC GRAW HILL
2. RAPID PROTOTYPING- PRINCIPLES AND APPLICATIONS by CHUA, C.K., LEONG, K.F., LIM,
C.K, WORLD SCIENTIFIC
References:
1. ENGINEERING DRAWING by N.D. BHAT & M. PANCHAL, CHAROTAR PUBLISHING HOUSE
PVT. LTD.
2. ENGINEERING GRAPHICS by K C JOHN, PRENTICE HALL
3. MANUFACTURING ENGINEERING AND TECHNOLOGY by SEROPE KALPAKJIAN, STEVEN R.
SCHMID, PEARSON
Session 2023-24 Page:1/2
Session 2023-24 Page:2/2
