1. INTRODUCTION TO CNC MACHINE
TOOLS: Development of CNC Technology,
principles, features, advantages,
economic benefits, applications, CNC, DNC concept,
classification of CNC Machine,
types of control, CNC controllers, characteristics, interpolators.
2. STRUCTURE OF CNC MACHINE TOOL:
CNC Machine building, structural details,
configuration and design, guide
ways - friction and anti friction and other types of guide ways,
elements used to convert the
rotary motion to a linear motion - Screw and nut, recalculating
roller screw, planetary roller
screw, recalculating roller screw, rack and pinion, torque
transmission elements - gears,
timing belts, flexible couplings, Bearings.
3. DRIVES AND CONTROLS: Spindle
drives - DC shunt motor, 3 phase AC induction motor,
feed drives - stepper motor,
servo principle, DC & AC servomotors. Open loop and closed loop
control, Axis measuring system -
synchro, synchro-resolver, gratings, moire fringe gratings,
encoders, inductosyn, laser
interferometer.
4. CNC PROGRAMMING: Coordinate
system, structure of a part program, G & M Codes,
Manual part programming for
Fanuc, Heidenhain, Sinumeric control system, CAPP, APT part
programming using CAD/CAM,
Parametric Programming.
5. TOOLING AND MAINTENANCE OF
CNC: Cutting tool materials, carbide insets
classification, qualified, semi
qualified and preset tooling, tooling system for Machining centre
and Turning centre, work holding
devices, maintenance of CNC Machines.
Reference Book:
1. HMT. Mechatronics. Tata
McGraw-Hill Publishing Company Limited, New Delhi
2. James Madison. "CNC
Machining Hand Book ". Industrial Press Inc.. 1996.
3. Steve Krar, Arthur Gill.
"CNC Technology and Programming ", McGraw-Hill
4. Berry Leathan, Jones,
Introduction to Computer Numerical Control, Pitman. London
4, Hans B.Kiej, 7:Fredericx
Waters, "Computer Numerical Control ", MacMillan McGraw
5, Bernard Hodgers, "CNC
Part Programming Work Book ". cizv and Guid, Macmillan
6. David Gribbs, "An
Introduction to CNC Machining ", Ca,\".\'ell, /9R7,
7, Sadasivan. 7:A, and .S'arathy,
D.,"Cutting Tools for Productive Machining, Widia P
8. Radhakrishnan. P.
"Computer Numerical Control Machines ". New Central Book Ag
9. Peter Smid, "CNC
Programming Hand Book ", Industrial Press Inc., 2000.Web
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