CAD/CAM Lecture #1
- 1. COMPUTER AIDED DESIGN AND MANUFACTURING 7th Semester Mechanical Engineering Lecture 1Introduction to CAD/ CAM
- 2. Course Objectives 7/23/2020 2 To introduce the student to be familiar with CAD/CAM terminology & its capabilities. To become familiar with CAD/CAM software, Graphical user interface & basic tools. To recognize geometric and graphical elements of engineering design problems To apply a “hands-on” understanding of the basic concepts of computer-aided manufacturing and prototyping through group and individual projects To study Basic features of CAM so as to be capable of accepting professional responsibilities and to understand the associativity between design and manufacturing. Integrate the CAD system and the CAM system by using the CAD system for modeling design information and converting the CAD model into a CAM model for modeling the manufacturing information. Lecture 1Introduction to CAD/ CAM
- 3. Syllabus 7/23/2020 3 Unit- I - Introduction of CAD/CAM Window and View port Unit- II - Geometric Modeling Geometric Modeling of Curves Unit- III - Representation of Surface Solid Modeling Unit- IV - Numerical Control NC Part Programming UNIT –V- Group Technology Computer integrated manufacturing (CIM) system Text Books:
- 4. Lecture 1Introduction to CAD/ CAM7/23/2020 4 Introduction to CAD/CAM Outlines What is design? What is computer –Aided design(CAD) & Computer Aided Manufacturing (CAM)? Application of CAD in mechanical engineering Advantages of CAD over manual Drafting How a CAD system is used in product design CAD system hardware and software.
- 5. Lecture #1Introduction to CAD/ CAM7/23/2020 5 Design is essentially a decision making process For every problem we need to design solution. “Design is to formulate a plan to satisfy a particular need and to create something with a physical reality.” 1. What is Design? GENERAL DESIGN PROCEDURE • Recognition of need • Synthesis (Mechanism) • Analysis of forces • Material selection • Design of elements (size and stress) • Modification • Detailed drawing • Production (Manufacturing)
- 6. Lecture #1Introduction to CAD/ CAM7/23/2020 6
- 7. Lecture #1Introduction to CAD/ CAM7/23/2020 7 What is Drawings? - Drawing is rough sketch which give some message or information about production. (like shape of product) What is Drafting ? - Drafting is a language of engineers with exact scaling, dimension, measurements, accuracy and with standard like ISO, ASME…etc.
- 8. Lecture #1Introduction to CAD/ CAM7/23/2020 8 What does mechanical engineers do in C – Mechanical engineers do drafting and design and prototype testing (analysis) operation in CAD. – Use to creates graphic representation of physical object. Computer – Aided Design (CAD) • One of the main applications of computer technology is computer Aided design (CAD), side by side with the computer aided manufacturing (CAM). • CAD stands for Computer Aided Design and Computer Aided Drafting. • It’s an integration of computer science techniques for engineering design. • The term computer aided design characterizes any design activity which incorporates an electronic computing machine in the process of development , analysis or modification and optimization of design.
- 9. 7/23/2020 9 Lecture #1Introduction to CAD/ CAM Generally the main function of CAD is used to – Create graphic representation (create 2D/3D drafting) – 3D modelling (individual component modelling and Assembly modelling) – Used for analysis (stress analysis, kinematic analysis,..etc.) – Used for simulation the system( collusion simulation, robotic simulation.. etc.)
- 10. Lecture #1Introduction to CAD/ CAM7/23/2020 10 Computer Aided Manufacturing - CAM • CAM technology involves computer systems that plan, manage and control the manufacturing operations through computer interface • One of the most important areas of CAM is numerical control (NC). This is a technique of using programmed instructions to control a machine tool that cuts, mills, grinds, punches or turns raw stock into a finished part. • Another significant CAM function is in the programming of robots. Process planning is also a target of computer automation.
- 11. Lecture #1Introduction to CAD/ CAM7/23/2020 11 • Automotive industry • Aerospace and air craft industry • Textile industry/ Fashion Design • Tool and die making industry • Die manufacturing industry • Welding and cutting industry • Jigs and fixture manufacturing...etc 1.3 Application of CAD in mechanical engineering