JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

The course is intend to

• To make the students familiar with computer aided programming, different tooling for CNC.
• To use computers in the area of manufacturing to reduce manual processing and linking computers to all manufacturing machines and increase the productivity, reduce the unnecessary costs.

Course Outcomes:

• After completing this course, the students should be able to
• To familiarize the components of computer aided manufacturing and to introduce CNC machines and computer aided process planning.
• CNC machines and its constructional features and part programming

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 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 processor.

TEXT BOOKS:

• 1. Computer control of manufacturing systems/Yoram Korem/Mc Graw Hill Int. 1983.
• 2. Machine tools hand book Volume 3, (Automation & Control)/Manfred weck/John Wiley and sons, 1984. R19 M.Tech. Mechatronics M. TECH. I Year II Sem. (MECHATRONICS)