ME 353

CAD/CAM

UNIT-I

Design Processes:  Design criteria, Alternative solutions, Alternative design, Computer Aided Design and Review.

Drafting Techniques:  Basic geometric elements and their creation.

Geometric Modeling:  Wire frame entities and their definition, Interpolation and Approximation curves.  Concept of parametric and non-parametric representation of a circle and helix curves, properties of splines.

Synthetic Curves:  Parametric representation of cubic spline, Bezier and B-spline curves, continuity, properties and characteristics.  Concept of NURBS.

UNIT-II

Surface Modeling:  Analytic surfaces:  Definitions of planar, surface of revolution, Tabulated cylinder, synthetic surfaces: Cubic and Bezier surfaces.

Solid Modeling:  C-rep and B-rep approaches

Design Applications:  Mass property calculations, Mechanical tolerancing, Finite Element Analysis, Design Review.

2D Transformations and their Mathematics:  Translation, Scaling and Rotation about arbitrary points, Shearing and Reflection, Homogeneous representations, concatenation.

UNIT-III

CAD Database and Data exchange:  CAD Database and structure, IGES and PDES format.

Numerical Control Machine Tools:  Features and elements of NC, Positional, paraxial and contouring types.  Definitions of axes.  Definitions of interpolation, post-processor, preparatory and miscellaneous functions, Canned cycles, Tool length and cutter radius compensation.  Manual and computer aided part programming (APT) for simple components, programming with MACROS.

UNIT-IV

Computer Numerical Control:  CNC, DNC and Adaptive control systems.  Typical configurations and relative features.  Machining centers, introduction to FANUC, SINUMERIC controllers. 

Industrial Robots:  Robot Anatomy, Configurations, Controls, Drivers, Programming methods and Applications.

UNIT-V

GT:  Part families, layout, part classification and coding system.  Opitz, MICLASS, CODE system.

CAPP:  Variant and Generative process planning.

FMS&CJMS:  Building blocks of Flexible Manufacturing systems and their control, Elements of CIMS.

Computer Aided Inspection and QC:  Coordinate Measuring Machine, Non contact inspection:  Machine vision, Scanning Laser Beam Devices, Quality control.

CAD/CAM Integration, Turnkey CAD/CAM Systems, Introduction to Rapid Prototyping Technique, Reverse Engineering.

Suggested Reading:

1. 1.Arvid R. Eide, Roland D. Jenison, Lane H. Mashaw, Larry: / Mprtji[. “Introduction to Engineering Desingg’ McGraw Hill, 1998.
2. 2.Ibrahim Zeid, CAD/CAM, Theory and Practice, McGraw Inc. New York, 1991.
3. 3.Grover, MP and Zimmeers E.W. CAD/CAM, Prentice Hall of India, 1989.
4. 4.Rao, P.N/ CAD/CAM: Principles and applications, 2^nd Edition, Tata McGraw Hill, New Delhi, 2004.
5. 5.Yoram Koren, Computer Control of Manufacturing Systems, McGraw Hill Int., New York, 1994.
6. 6.Elanchezhian, C. Sunder Selwyn, T. Shanmuga Sunder, G. computer Aided Manufacturing, Laxmi Publications (P) Ltd., 2^nd Edition, New Delhi, 2007.