JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

UNIT - I

Features of NC Machines Fundamentals of numerical control, advantage of NC systems, classification of NC systems, point to point, NC and CNC, incremental and absolute, open and closed loop systems, Features on N/C Machine Tools, design consideration of NC machine tool, methods of improving machine accuracy.

UNIT - II

NC part Programming: Manual programming-Basic concepts, Point to Point contour programming, canned cycles, parametric programming. Tooling for CNC Machines: Interchangeable tooling system, preset and qualified tools, coolant fed tooling system, modular fixturing, quick change tooling system, automatic head changers.

UNIT - III

DNC Systems and Adaptive Control: Introduction, type of DNC systems, advantages and disadvantages of DNC, adaptive control with optimization, Adaptive control with constraints, Adaptive control of machining processes like turning, grinding.

UNIT - IV

Rapid Prototyping: Introduction, Stereo-lithography, Selective Laser Sintering, Fusion Deposition Modeling (FDM), LOM, Rapid Tooling.

UNIT - V

Post Processors for CNC: Introduction to Post Processors: The necessity of a Post Processor, the general structure of a Post Processor, the functions of a Post Processor, DAPP-based-Post Processor: Communication channels and major variables in the DAPP-based Post Processor, the creative of a DAPP-Based Post Processor.

REFERENCE BOOKS:

• 1. Computer Control of Manufacturing Systems / Yoram Korem / McGraw Hill Int.1983.
• 2. Machine Tools Hand Book vol 3, (Automation & Control) / Manfred Weck / John Wiley and Sons, 1984.
• 3. P.N. Rao, N K Tewari, T K Kundra, “Computer Aided Manufacturing “McGraw Hill Publisher.