MSc Manufacturing and Welding Engineering Design

Course Information Package

Course Unit TitleADVANCED CAD/CAM SYSTEMS
Course Unit CodeMDME502
Course Unit DetailsMSc Manufacturing and Welding Engineering Design (Required Courses) -
Number of ECTS credits allocated7
Learning Outcomes of the course unitBy the end of the course, the students should be able to:
  1. Acquire greater breadth and depth technical knowledge in the areas of CAD/CAM.
  2. Describe the technology of a CNC system in both software and hardware terms
  3. Use effectively a modern CAD system for designing mechanical parts and elements in 2D and 3D dimensions
  4. Compare and contrast the operation and programming of a CNC machine tool using manual programming and a CAD/CAM system.
  5. Develop advanced and flexible programs using sub-programming and parametric techniques.
  6. Demonstrate the ability to: post a program with a CAM software into codes for a CNC machine tool, switch between different post processors in a CAM software, edit posted programs with a CAM software, transfer a CNC program from a computer to a CNC machine tool and finally run a program on a CNC machine tool which was created on a CAM software.
Mode of DeliveryFace-to-face
PrerequisitesNONECo-requisitesNONE
Recommended optional program componentsNONE
Course Contents

·     CNC technology
Definition of Numerical Control, advantages of CNC machines, types of CNC Machine Tools, components of NC systems: Spindle drives, DC motors, stepping motors, servo motors, slide ways, recirculation ball screw, tool magazine, feedback devices: encoders, linear and rotary transducers. open and closed loop systems

·     CNC programming concepts
Cartesian and polar coordinate system, reference points: machine zero, work zero, tool zero and tool offsets, basic motions, linear and circular interpolation, tool radius compensation, tool information, spindle speeds and feedrates.

·     Generation of NC programs through manual programming.
preparatory functions and G codes, miscellaneous functions and M codes, sample programs for lathe and milling. Advanced programs with canned cycles: peck drilling, thread, slot and pocket cutting, circular and rectangular array of holes. Modern developments: Subprograms and program section repeats, Parametric programming, Macros.

·     Computer Aided Design
Introduction,CAD definition, CAD activities, benefits of CAD, Role of interactive computer graphics in modern design and manufacturing. Geometric modelling: Requirements, geometric models, geometric construction models, curve representation methods, surface representation methods, modeling facilities desired. Drafting and Modeling systems, basic geometric commands, layers, display control commands, editing, dimensioning, solid modeling.
Graphics standards: Need, GKS, IGES, DXF. Commercial CAD packages.

·     Computer Aided Manufacturing
Introduction, CAM definition, functions of CAM, benefits of CAM. Integrated
CAD/CAM organization. Generation of CNC codes from CAD models, post
processors. Application of all stages on modern CAD/CAM systems to design
and machine various mechanical parts with gradually increased complexity
including
dies with sculptured surfaces, pockets with intricate form and internal
islands, etc.

·     Laboratory work:  A series of machining applications on a 5axis CNC machining center and a CNC turning machine using state of the art CAD/CAM systems.

Recommended and/or required reading:
Textbooks
  • Mikell P. Groover: Automation, Production Systems, and Computer-Integrated Manufacturing, Prentice Hall, 2008.
References
  • P.N.Rao: CAD/CAM Principles and Applications, 2002, Tata Mc Graw Hill Publishing Company Ltd
  • Ibrahim Zeid: Mastering CAD/CAM, 2007, Tata McGraw-Hill Publishing Company Ltd.
  • Robert Quasada: Computer Numerical Control - Machining and Turning center,Prentice Hall, 2005.
Planned learning activities and teaching methods

·       Lectures for learning the methodology of manufacturing based on CAD/CAM Systems. Lecture notes and presentations are available through the web for students to use in combination with the textbooks.

·       Computer-assisted simulation examples of representative mechanical parts.

·       Laboratory experiments: Actual machining on modern CNC machines. (Carried out in small groups.)

Assessment methods and criteria
Laboratory30%
Mini-project30%
Final Exam40%
Language of instructionEnglish
Work placement(s)NO