Computer-aided Design &
Manufacturing
(CAD) & (CAM)

Inam Ul-Haq
Lecturer in Computer Science (since 2005)
University of E...
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What is Computer-aided Design?
How does it work?
Advantages and Disadvantages
Six ways to choose the right CAD ...
What Is Computer-aided Design
(CAD)
• A software system that uses computer graphics to assist in the:

• Designing new car...
How Does It Work? (CAD)
• 2D: Technical drawing & General-Purpose
drafting E.g. AutoCAD
• 3D: Difficult to master & Freely...
• Reduce the lead time in case of simulation
• Products can be tested more quickly
• Costly mistakes in design or producti...
• The use of computer software to control machine tools and
related machinery in the manufacturing of workpieces (a piece
...
• The manufacturing approach of using computers to control the 
entire production process.
(Wikipedia)
• This integration ...
• Integration of components from different suppliers: When
different machines, such as CNC, conveyors and robots, are
usin...
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Russell, Roberta Operations Management
Prentice Hall, Inc. 2000
Rowell, Amy “Designing To Win”...
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Russell, Roberta Operations Management
Prentice Hall, Inc. 2000
Rowell, Amy “Designing To Win”...
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Cad, cam, cim

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  • efficient drafting and modeling tool
    animated walkthroughs or fly-bys
    interactive virtual tours through buildings that have yet to be built.
    reduce time to market
  • efficient drafting and modeling tool
    animated walkthroughs or fly-bys
    interactive virtual tours through buildings that have yet to be built.
    reduce time to market
  • efficient drafting and modeling tool
    animated walkthroughs or fly-bys
    interactive virtual tours through buildings that have yet to be built.
    reduce time to market
  • efficient drafting and modeling tool
    animated walkthroughs or fly-bys
    interactive virtual tours through buildings that have yet to be built.
    reduce time to market
  • Cad, cam, cim

    1. 1. Computer-aided Design & Manufacturing (CAD) & (CAM) Inam Ul-Haq Lecturer in Computer Science (since 2005) University of Education Okara Campus Inam.bth@gmail.com, organizer@dfd-charity.com
    2. 2. • • • • • What is Computer-aided Design? How does it work? Advantages and Disadvantages Six ways to choose the right CAD for you Summary MIS, University of Education, Okara Campus Table of Contents 2
    3. 3. What Is Computer-aided Design (CAD) • A software system that uses computer graphics to assist in the: • Designing new cars; • Bridge and building design and testing; fitted kitchens • Printed circuit board (PCB) design; aircraft. • Short History • • • • • 1982 Solid modeling has proliferated to CAD systems 1983 3D developed in Sweden 1986 Autodesk's AutoCAD is the most popular microcomputer design program 1989 NASA develops high-end data visualization programs 2000 Moving design engineering from the desktop to the Web MIS, University of Education, Okara Campus • creation • modification • analysis of a design. • CAD has many different applications, which include:- 3
    4. 4. How Does It Work? (CAD) • 2D: Technical drawing & General-Purpose drafting E.g. AutoCAD • 3D: Difficult to master & Freely rotate and zoom a model • E.g. 3Ds Studio Max, Maya • Engineering analysis and design analysis • Is also called computer-aided engineering (CAE) • Tests and analyzes designs on the computer screen MIS, University of Education, Okara Campus • Geometric Modeling & Visualization • Uses basic lines, curves, and shapes to generate • E.g. AutoCAD 4
    5. 5. • Reduce the lead time in case of simulation • Products can be tested more quickly • Costly mistakes in design or production can be avoided • Time to manufacture can be reduced • Documentation can be printed in various forms for multiple users • The quality of designs and the products manufactured from them is improved MIS, University of Education, Okara Campus Advantages (CAD) 5
    6. 6. • The use of computer software to control machine tools and related machinery in the manufacturing of workpieces (a piece of any material under process). • Also refer to the use of a computer to assist in all operations of a manufacturing plant, including planning, management, transportation and storage. • CAM is a computer-aided process after CAD • largest CAM software companies include: • Dassault Systèmes, Siemens PLM Software, Delcam, Vero Software, PTC, Tebis, Open Mind Technologies, Cimatron • Free CAM software: BlenderCam, PyCam MIS, University of Education, Okara Campus Computer aided Manufacturing (CAM) 6
    7. 7. • The manufacturing approach of using computers to control the  entire production process. (Wikipedia) • This integration allows individual processes to exchange information with each other and initiate actions. • CIM relies on Closed-loop control processes • Also known as flexible design & manufacturing • E.g. Auto Manufacturing Plants • Key challenges: Integration, Data Integrity, Process Control MIS, University of Education, Okara Campus Computer integrated Manufacturing (CIM) 7
    8. 8. • Integration of components from different suppliers: When different machines, such as CNC, conveyors and robots, are using different communications protocols may cause problems. • Data Integrity The higher the degree of automation, the more critical is the integrity of the data used to control the machines. While the CIM system saves on labor of operating the machines, it requires extra human labor in ensuring that there are proper safeguards for the data signals that are used to control the machines. • Process Control Computers may be used to assist the human operators of the manufacturing facility, but there must always be a competent engineer on hand to handle circumstances which could not be foreseen by the designers of the control software. MIS, University of Education, Okara Campus Key Challenges (CIM) 8
    9. 9. 1. 2. 3. 4. 5. 6. 7. 8. 9. Russell, Roberta Operations Management Prentice Hall, Inc. 2000 Rowell, Amy “Designing To Win” Computer Graphics World March, 1997 Stevens, Tim “The cost of CAD Incompatibility” www.IndustryWeek.com June 11, 2001 www.bdcmag.com Meyer, Ann “TRW Faces CAD Translation Nightmares” Computer Graphics  World June, 1997 Rowell, Amy “The Challenge of Cad Interoperability” Computer Graphics World June, 1997 Smith, Susan “The Challenges of Complex Surfaces” Computer Graphics World November, 1996 http://en.wikipedia.org/wiki/Computer-aided_manufacturing http://en.wikipedia.org/wiki/Computer-integrated_manufacturing MIS, University of Education, Okara Campus Bibliography 9
    10. 10. 1. 2. 3. 4. 5. 6. 7. 8. 9. Russell, Roberta Operations Management Prentice Hall, Inc. 2000 Rowell, Amy “Designing To Win” Computer Graphics World March, 1997 Stevens, Tim “The cost of CAD Incompatibility” www.IndustryWeek.com June 11, 2001 www.bdcmag.com Meyer, Ann “TRW Faces CAD Translation Nightmares” Computer Graphics World June, 1997 Rowell, Amy “The Challenge of Cad Interoperability” Computer Graphics World June, 1997 Smith, Susan “The Challenges of Complex Surfaces” Computer Graphics World November, 1996 http://en.wikipedia.org/wiki/Computer-aided_manufacturing http://en.wikipedia.org/wiki/Computer-integrated_manufacturing MIS, University of Education, Okara Campus Bibliography 9

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