JNTUA B.Tech. R20 Regulations

########## JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY ANANTAPUR B.Tech (ME) - III-I Sem L T P C 3 0 0 3 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY ANANTAPUR B.Tech (ME) - III-I Sem L T P C 3 0 0 3 (20A03501) CAD/CAM Course Objectives:

- • Understand the basics of CAD/CAM, geometric representation, transformations.
- • Explain geometric modeling methods in CAD.
- • Familiarize numerical control (NC), computer numerical control (CNC) and direct numerical control (DNC) machines.
- • Impart knowledge on manual part programming and computer aided part programming.
- • Explain the principles robotics, CIM, AR,VR and AI in CIM

########## Course Outcomes:

- • Apply the basics of geometric representation and transformations in CAD/CAM. L3
- • Choose geometric modelling methods for building CADmodels. L1
- • Compare NC, CNC and DNC. L2
- • Develop manual and computer aided part programming for turning and milling operations. L3
- • Summarize the principles of robotics AR, VR and AI in CIM.

UNIT I Introduction to CAD/CAM Introduction, hardware and software, I/O devices, benefits. Graphics standards-Neutral CAD/CAM: Introduction, hardware and software, I/O devices, benefits. Graphics standards-Neutral CAD/CAM: file formats - IGES, STEP. Translation, scaling, rotation, mirroring, homogenous 2D and 3D geometric transformations: and 3D geometric transformations: transformations, concatenation of transformations, viewing transformations.

UNIT II Geometric Modelling Representation of curves, Hermite curves, Spline, Bezier and B-spline Parametric representation: Representation of curves, Hermite curves, Spline, Bezier and B-spline Parametric representation: curves in two dimensions; Geometric modelling of surfaces: Surface patch, Coons and bicubic patches, Bezier and B-spline surfaces, sweep surfaces, surface of revolution, blending of surfaces Wireframe, surface modelling, solid entities, Boolean operations, Geometric Modelling of Solids: Modelling of Solids: CSG approach and B-rep of solid modelling, geometric modelling of surfaces.

UNIT III Computer Aided Manufacturing (CAM) Structure of numerical control (NC) machine tools, Computer Aided Manufacturing (CAM): Structure of numerical control (NC) machine tools, Computer Aided Manufacturing (CAM): designation of axes, drives and actuation systems, feedback devices, computernumerical control (CNC) and direct numerical control (DNC), adaptive control system, CNC tooling, automatic tool changers and work holding devices, functions of CNC and DNC systems.

UNIT IV Part Programming and APT Programming Part programming instruction formats, information codes, preparatory functions, Part Programming: Part programming instruction formats, information codes, preparatory functions, Part Programming: miscellaneous functions (G-codes, M-codes). Tool codes and tool length offset, interpolations canned cycles. APT language structure, APT geometry, Definition of point, line, circle, plane. APT Programming: Programming: APT Motion Commands: set-up commands, pint to point motion commands; continuous path motion commands part programming preparation for typical examples (milling and turning operation)

UNIT V Automation Anatomy and configuration of robot, characteristics of robots,grippers, application of Automation: Anatomy and configuration of robot, characteristics of robots,grippers, application of Automation: robots in manufacturing, robot programming languages, Group Technology, Introduction to computer integrated manufacturing, Introduction to Virtual Reality (VR), Augmented Reality (AR) and Artificial Intelligence (AI).