Mechanical Engineering(6th Sem.)
Machine Tool Technology__________________________________1. Unit-1
2. Unit-2
3. Unit-3
4. Unit-4
5. Unit-5
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Machine Tool Technology SyllabusUNIT - I Cutting Tool – types, requirements, specification & application Geometry of Single Point Cutting Tool - tool angle, Tool angle specification system, ASA, ORS and NRS and inter-relationship. Mechanics of Metal Cutting Theories of metal cutting, Chip formation, types of chips, chip breakers, Orthogonal and Oblique cutting, stress and strain in the chip, velocity relations, power and energy requirement in metal cutting. UNIT - II Machinability Concept and evaluation of Machinability, Mechanism of Tool failure, Tool wear mechanism, Tool life, Tool life equation, Machinability index, factors affecting machinability. Thermal Aspects in Machining and Cutting Fluid Source of heat in metal cutting and its distributions, temp measurement in metal cutting, function of cutting fluid, types of cutting fluid. UNIT – III Design of Machine Tool Element Design of Lathe bed, Material and construction feature, various bed section, analysis of force under headstock, tail stock and saddle, torque analysis of lathe bed, bending of lathe bed, designing for torsional rigidity, use of reinforcing stiffener in lathe bed. Design of Guide ways, Material and construction features, over turning diagram, Antifriction guide ways. UNIT – IV Design of Speed Gear Box Drives in Machine Tool, classification, selecting maximum and minimum cutting speeds, speed loss, kinematic advantage of Geometric progression, kinematic diagrams, design of Gear Box of 6,9,12 and 18 speed. UNIT – V Design of Feed Gear Box Elements of feed gear box, classification-Norton drive, draw key drive, Meander’s drive, Design of feed gear box for longitudinal and cross feed and for thread cutting. Machine Tool Installation and Maintenance Machine Tool installation, Machine Tool Maintenance, lubrication, reconditioning of machine tool. Machine Tool Testing Testing, Geometrical checks, measuring equipment for testing, acceptance test for Lathe and Radial drillingmachines. |
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