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Important questions
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UNIT-1
1.Types of chip
2.orthogonal and oblique metal cutting
3.tool wear, tool life
UNIT-2
1.Centre lathe, constructional features, specification.
2.Thread cutting methods
3.automatic lathes: semi-automatic
UNIT-3
1.Drilling and reaming operation
2.type of milling operations
3.Gear cutting, gear hobbing and gear shaping
UNIT-4
1. CNC constructional details
2. CNC Control systems
3. Work holding methods in Turning and machining centres
UNIT-5
1. Polar coordinates
2. G and M codes
3. Setting up a CNC machine for machining
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UNIT – I MECHANICS OF METAL CUTTING 9
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.
UNIT – II TURNING MACHINES 9
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
UNIT – III RECIPROCATING MACHINE TOOLS 9
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 wheelspecifications and selection, types of grinding process – cylindrical grinding, surface grinding, centreless
grinding, internal grinding - micro finishing methods
UNIT – IV CNC MACHINES 9
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.
UNIT – V PROGRAMMING OF CNC MACHINE TOOLS 9
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.
Thanks for your love and support guys keep supporting and share let the Engineers know about Us and leave a comment below for better improvements
If there is any doubt feel free to ask me I will clear if I can or-else I will say some solutions ..get me through WhatsApp for instant updates ~$tuff$£ctor
UNIT – I MECHANICS OF METAL CUTTING 9
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.
UNIT – II TURNING MACHINES 9
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
UNIT – III RECIPROCATING MACHINE TOOLS 9
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
UNIT – IV CNC MACHINES 9
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.
UNIT – V PROGRAMMING OF CNC MACHINE TOOLS 9
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.