Syllabus Manufacturing Technology - (ME3493) UNIT - I MECHANICS OF METAL CUTTING Mechanics of chip formation, forces in machining, Types of chip, cutting tools - single point cutting tool nomenclature, orthogonal and oblique metal cutting, thermal aspects, cutting tool materials, tool wear, tool life, surface finish, cutting fluids and Machinability. (Chapter - 1) UNIT - II TURNING MACHINES Centre lathe, constructional features, specification, operations - taper turning methods, thread cutting methods, special attachments, surface roughness in turning, machining time and power estimation. Special lathes - Capstan and turret lathes - tool layout - automatic lathes : semi-automatic - single spindle : Swiss type, automatic screw type - multi spindle. (Chapter - 2) UNIT - III RECIPROCATING MACHINE TOOLS Reciprocating machine tools : shaper, planer, slotter : Types and operations- Hole making : Drilling, reaming, boring, tapping, type of milling operations-attachments - types of milling cutters - machining time calculation - Gear cutting, gear hobbing and gear shaping - gear finishing methods Abrasive processes : grinding wheel - specifications and selection, types of grinding process - cylindrical grinding, surface grinding, centreless grinding, internal grinding - micro finishing methods. (Chapters - 3, 4, 5, 6) UNIT - IV CNC MACHINES Computer Numerical Control (CNC) machine tools, constructional details, special features - Drives, Recirculating ball screws, tool changers; CNC Control systems - Open/closed, point - to-point/continuous - Turning and machining centres - Work holding methods in Turning and machining centres, Coolant systems, Safety features. (Chapter - 7) UNIT - V PROGRAMMING OF CNC MACHINE TOOLS Coordinates, axis and motion, Absolute vs Incremental, Interpolators, Polar coordinates, Program planning, G and M codes, Manual part programming for CNC machining centers and Turning centers - Fixed cycles, Loops and subroutines, Setting up a CNC machine for machining. (Chapter - 8)
