Download - CAD & CAM introduction
CECOS University of IT &
Emerging Sciences
ME-2011AMechanical Engineering
CAD/CAMBY
Engr.M Irfan KhanLecture No-1
CECOS UNIVERSITY of IT & EMERGENCY 2
HURRAH
CAD: Computer Aided DesignCAM: Computer Aided Manufacturing
Two credit hours course
Course Out linesCAD• Fundamentals of CAD• Hardware in CAD• Computer Graphics• Software and data base, Mathematical
elements of CAD• Finite Element analysis.
Course Out lines (cont….)CAM• Conventional Numerical Control• NC part programming, • Computer controls in NC
Evaluation Criteria for the Theory Course (Three Credit Hours) 25% of the Sessional marks will be allocated for the Quizzes and Assignments.6 AssignmentsBest 6-Assignment will be Graded 12.5 Marks6 QuizzesBest 6-Quizzes will be Graded 12.5 Marks25% of the Sessional marks will be allocated for the two (2) sessional tests.
1st sessional test(after 7th-weeks) 10 Marks2nd sessional test(after 12th-weeks) 15 Marks
50% marks will be allocated for the Final examination 50 Marks
Course contents
• Lectures• Assignments• Quizzes• Recommended books• Class discussions
Computer Aided Design
What is Design…???• Another definition for design is a roadmap or a strategic approach for someone to achieve a unique
expectation. It defines the specifications, plans, parameters, costs, activities, processes and how and what to do within legal, political, social, environmental, safety and economic constraints in achieving that objective
The Design Process – An Engineering Activity
1. Need2. Concept3. Modeling and Simulation4. Analysis – FEM (Geometrical
Data)5. Optimize – Shape /
Structure / Topology6. Evaluate – testing /
Inspection / Comparison7. Communicate – prepare
drawings and details
Taking assistance of Computers in Design
1. Manual Design2. Geometric Models and
Graphics3. Move / Animate / Visualise4. Use Analysis tools and
software5. Optimize – Maximize /
minimize the objectivefunctions: Structure, Shape,
Topology6. Evaluate – test and check
the model7. Communicate – Drafting and
detailing
Basic definitions
Engineering design Geometric modeling
Computer graphics
CAD
Basic definitions• CAD: Computer-Aided Design is the technology
concerned with the use of computer systems to assist in the creation, modification, analysis, and optimization of a design.
• CAM: Computer-Aided Manufacturing is the technology concerned with the use of computer systems to plan, manage, and control manufacturing operations.
• CAE: Computer-Aided Engineering is the technology concerned with the use of computer systems to analyze CAD geometry, allowing the designer to simulate and study how the product will behave.
Simple CAD/CAE/CAM product life cycle
More about CAD & CAM
DesignAnalysis
Visualization
Basic components of a CAD system
• A CAD system consists of • IT hardware (H/W), • Specialised software (S/W) (depending on the
particular area of application, The core of a CAD system is the S/W, which makes use of graphics for product representation)
• Peripherals, which in certain applications are quite specialised.
• Databases for storing the product model and drives the peripherals for product presentation.
• The use of CAD does not change the nature of the design process but as the name states it aids the product designer. The designer is the main actor in the process, in all phases from problem identification to the implementation phase
THE END
• What you have learned today…???(Fundamentals of CAD)