CAD (B-TECH Mechanical Engineering 7-8th)

UNIT – I Introduction: Introduction to CAD/CAM, Historical developments, Industrial look

at CAD/CAM, Introduction to CIM; Basics of geometric and solid modeling,

explicit, implicit, intrinsic and parametric equations, coordinate systems.

UNIT – II Transformations: Introduction, transformation of points and line, 2-D rotation,

reflection, scaling and combined transformation, homogeneous coordinates, 3-D

scaling, shearing, rotation, reflection and translation, combined transformations,

orthographic and perspective projections, reconstruction of 3-D objects.

UNIT – III Curves: Algebraic and geometric forms, tangents and normal, blending functions

reparametrization, straight lines, conics, cubic splines, Bezier curves and B-spline

curves.

UNIT – IV Surfaces: Algebraic and geometric forms, tangents and normal, blending functions,

reparametrization, sixteen point form, four curve form, plane surface, ruled surface,

surface of revolution, tabulated cylinder, bi-cubic surface, bezier surface, B-spline

surface.

UNIT – V Solids: Solid models and representation scheme, boundary representation,

constructive solid geometry, sweep representation, cell decomposition, spatial

occupancy enumeration.

UNIT – VI Automation and Numerical Control: Introduction, fixed, programmable and

flexible automation, types of NC systems, MCU and other components, NC manual

part programming, coordinate systems, G & M codes, Part program for simple

parts, computer assisted part programming.

UNIT – VII Group Technology: Part families, part classification and coding, production flow

analysis, Machine cell design, Advantages of GT

UNIT – VIII Flexible Manufacturing Systems & Computer aided process planning:

Introduction, FMS components, types of FMS, FMS layouts, planning for FMS,

advantages and applications Coventional process planning, types of CAPP, Steps in

variant process planning, planning for CAPP.