1. By
Asstt. Prof. Abhay S. Gore
Dept. of Mechanical Engg.
MIT (T), Aurangabad
Intro to CAD/CAM and Tools
2. What is Design?
Design is the human power to
conceive, plan, and realize products that serve
human beings in the accomplishment of any
individual or collective purpose.
Usually considered in the context of applied arts
, engineering, architecture, and other creative
endeavors
3. Some Popular Design Approaches
User-centered design, which focuses on the
needs, wants, and limitations of the end user of the
designed artifact.
Use-centered design, which focuses on the goals and
tasks associated with the use of the artifact, rather
than focusing on the end user
KISS principle, (Keep it Simple, Stupid), which strives
to eliminate unnecessary complications
Murphy's Law (things will go wrong in any given
situation, if you give them a chance)
4. CAD/CAM
Computer-aided design (CAD) is the use of computer
systems to assist in the
creation, modification, analysis, or optimization of a
design.
Computer-aided manufacturing (CAM) is the use of
computer systems to plan, manage, and control the
operations of a manufacturing plant through direct or
indirect computer interface with plant’s resources.
5. Need for CAD/CAM
• To increase productivity of the designer
• To improve quality of the design
• To improve communications
• To create a manufacturing database
• To create and test tool paths and optimize
them
• To help in production scheduling and MRP
models
• To have effective shop floor control
6. Tools of CAD/CAM
AutoCAD (CAD)
Computer Aided Design or Computer Aided Drafting
For 2D and 3D design and drafting, developed and
sold by Autodesk, Inc. in 1982
Earlier primitive entities used such as
lines, polylines, circles, arcs, and text
But now it has solid modeling and 3D tools
Has supported custom objects through its C++ API
Application Programming Interfaces (APIs) for
customization and automation
Include AutoLISP, Visual LISP, VBA, .NET and
ObjectARX
8. CATIA (CAD/CAM/CAE):
Computer Aided Three-dimensional Interactive
Application
By the French company Dassault’s Systems
Created in the late 1970s and early 1980s to
develop Dassault's Mirage fighter jet
Adopted in the
aerospace, automotive, shipbuilding, and other
industries
9. CATIA
Modules of CATIA
Product Structure
Part Design
Assembly Design
Sketcher
Drafting (Interactive and Generative)
Wireframe and Surface
Freestyle Shaper
Digital Shape Editor
Knowledge ware
Photo Studio
4D Navigator (including kinematics)
Manufacturing
Finite Element Analysis
10. Pro/ENGINEER
(CAD/CAM/CAE):
Is a parametric, integrated 3D CAD/CAM/CAE
solution created by Parametric Technology
Corporation (PTC).
First to market with parametric, feature-
based, associative solid modeling software on the
market
Solid modeling, assembly modeling and
drafting, finite element analysis, and NC and
tooling functionality for mechanical engineers
12. SIEMENS NX (CAD/CAM/CAE):
NX is the commercial CAD/CAM/CAE PLM
software suite developed by Siemens PLM
Software.
Used in the engineering industry, especially in the
automotive and aerospace sectors.
NX is a parametric solid / surface feature-based
modeler
Uses the Para solid geometric modeling kernel.
14. SOLID EDGE (CAD/CAE):
Intergraph in 1996 using the ACIS geometric
modeling kernel it later changed to using the Para
solid kernel
In 1998 it was purchased and further developed by
UGS Corp
In 2007, UGS was acquired by the Automation &
Drives Division of Siemens AG
Solid Edge is 3D CAD parametric feature solid
modeling software
Provides solid modeling, assembly modeling and
drafting functionality for mechanical engineers
It has links to many other Product Lifecycle
Management (PLM) technologies
16. SOLID WORKS (CAD/CAE):
Developed by Dassault’s Systems Solid Works
Corp., a subsidiary of Dassault’s Systems, S. A.
(Vélizy, France)
17. INVENTOR (CAD/CAE):
Autodesk Inventor is a CAD software application
for 3D mechanical design, product
simulation, tooling creation, and design
communication, developed and sold by
Autodesk, Inc. in 1999
18. MASTERCAM (CAD/CAM):
Founded in Massachusetts in 1983, CNC
Software, Inc
Let machinists design virtual parts on a computer
screen and also guided computer numerical
controlled (CNC) machine tools in the
manufacture of parts
It has set of predefined tool paths—
including contour, drill, pocketing, face, peel
mill, engraving, surface high speed, advanced multi-
axis, and
many more—enable machinists to cut parts
efficiently and accurately
21. Hypermesh (CAD/CAE)
Introduced by Altair Corporation
Generally modeling, for meshing the CAD model
and analysis of CAD model
Have solver as Optistruct and RADIOSS
22. ANSYS (CAE):
General-purpose finite element analysis and
computational fluid dynamics software
Best known for its ANSYS Mechanical and ANSYS
Multi physics products
Including static/dynamic structural analysis (both
linear and non-linear), heat transfer and fluid
problems, as well as acoustic and electro-magnetic
problems.
CFX computational fluid dynamics and Fluent for CFD
Electronic design automation (EDA) software for to
simulate high-performance electronics designs found
in mobile communication and Internet
devices, broadband networking components and
systems, integrated circuits, printed circuit boards
24. SIMULIA (ABAQUS):
Developed by HKS Inc of Rhode Island, USA
Consists of three core products:
Abaqus/Standard, Abaqus/Explicit and
Abaqus/CAE. Abaqus/Standard
25. Syllabus
Term work shall Consists of record book on laboratory experiments studies on the following
Sr. No. Practical
1. CAD exercises using any one drafting software
2. Part modeling using some of the modeling technique (2-D)
3. Part modeling using some of the modeling technique (3D)
4. Component assembly in CAD and generating and modifying drawings
5 Part-programming on CNC Lathe machines
6 Part-programming on CNC Milling machines
7 Part-programming on CNC Drilling machines
8 Execution of part program for machining given profile.