CAD is the use of computer

systems (or workstations) to aid in

the creation, modification, analysis,
or optimization of a design.
CAD software is used to increase
the productivity of the designer,
improve the quality of design, and
improve communications through
documentation.
• CAD output is often in the form of
electronic files for print, machining,
or other manufacturing operations.
• CAD may be used to design curves
and figures in two-dimensional (2D)
space; or curves, surfaces, and
solids in three-dimensional (3D)
space.
 The beginnings of CAD can be traced to the
year 1957, when Dr. Patrick J. Hanratty
developed PRONTO, the first commercial
numerical-control programming system.
Patrick J. Hanratty was an American
computer scientist and businessperson, known
as the "Father of CAD/CAM“ computer-aided
design and computer-aided manufacturing.
Patrick J. Hanratty
 In 1960, Ivan Sutherland MIT's
Lincoln Laboratory created
SKETCHPAD, which demonstrated
the basic principles and feasibility
of computer technical drawing
 Sketchpad was a computer program
written by Ivan Sutherland in 1963 in the
course of his PhD thesis, for which he
received the Turing Award in 1988, and the
Kyoto Prize in 2012. It pioneered the way
for human–computer interaction.
https://www.youtube.com/watch?v=5RyU50qbvzQ
 The first CAD systems served as mere
replacements of drawing boards. The
design engineers still worked in 2D to
create technical drawings consisting from
2D wire-frame primitives (line, arc, B spline
...). Productivity of design increased, but
many argue that only marginally due to
overhead – design engineers had to learn
how to use computers and CAD.
 Nevertheless modifications and
revisions were easier, and over time CAD
software and hardware became cheaper
and affordable for mid-size companies.
CAD programs grew in functionality and
user friendliness
 3D wireframe features were developed in
the beginning of the sixties, and in 1969 MAGI
released Syntha Vision, the first commercially
available solid modeler program. Solid
modeling further enhanced the 3D capabilities
of CAD systems. NURBS, mathematical
representation of freeform surfaces, appeared
in 1989 -- first on Silicon Graphics workstations.
In 1993 CAS Berlin developed an interactive
NURBS modeler for PCs, called NöRBS.
 Non-uniform rational basis spline (NURBS)
is a mathematical model commonly used in
computer graphics for generating and
representing curves and surfaces. It offers great
flexibility and precision for handling both
analytic (surfaces defined by common
mathematical formulae) and modeled shapes.
1. Increase in the productivity of the
designer
2. Improve the quality of the design
3. Better communications:
4. Creating documentation of the
designing:
5. Creating the database for manufacturing
6. Saving of design data and drawings:
Fields
of
CAD
CAM
Computer
Aided
Manufacturing
Computer Aided Manufacturing
(CAM) is the use of software and
computer-controlled machinery to
automate a manufacturing process.
Based on that definition, you need
three components for a CAM system
to function:
A. Software B. Machine
C. Post-Processing
CNC
Computer
Numerical
Control
Computer numerical control (CNC)
is a method for automating control of
machine tools through the use of
software embedded in a
microcomputer attached to the tool. It
is commonly used in manufacturing
for machining metal and plastic
parts.
3D Printer
3D printing, or additive
manufacturing, is the
construction of a three-
dimensional object from a
CAD model or a digital 3D
model.
EDA
Electronics
Design
Automation
Electronic design automation
(EDA), also referred to as electronic
computer-aided design (ECAD), is a
category of software tools for
designing electronic systems such as
integrated circuits and printed circuit
boards.
DCC
Digital
Content
Creation
Digital content creation is the
process of generating topic ideas
that appeal to your audience and
then creating written or visual content
around those topics. It is about
making information and your
expertise obvious to anyone
consuming your content.
CAE
Computer
Aided
Engineering
Computer-Aided Engineering (CAE)
software, also referred to as
simulation software, supports
engineering analysis tasks. CAE
software enables users to simulate,
validate, and optimize products and
manufacturing tools. Some CAE
products allow users to model
discrete events, while others can
model continuous events.
CIM
Computer
Integrated
Manufacturing
Computer-integrated manufacturing
is the manufacturing approach of
using computers to control entire
production process. This integration
allows individual processes to
exchange information with each part.
Although manufacturing can be
faster and less error-prone by
the integration of computers
DIFFERENCE BETWEEN
MANUAL AND CAD
1. TOOLS
2. TECHNIQUES
1. CAD system
operator
-person who has
knowledge in
operating CAD
2. CAD technician
-person who has a
background and
yet know to use
CAD
THANK YOU
FOR
LISTENING!