Machining Science
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Machining Science Syllabus — Unit-wise Content
The official GTU curriculum for Machining Science (subject code 3712808) as prescribed for PE · Semester 1 divides the course into 10 units, covering 65 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (3712808)Unit 1 Introduction to Machining
- Basic Mechanism involved
- Tensile test
- stress and strain
- Mechanism of Plastic Deformation- slip
- Typical lathe tools
- Orthogonal cutting
- oblique cutting
- Types of chips
- Mechanism of built-up-edge formation
Unit 2 Tool Geometry
- Reference planes
- Tools specification in ASA, ORS and NRS
- conversation from ASA to ORS
- Selection of tools angles
- Multi-point cutting tools-geometry of peripheral milling cutters and twist drills
Unit 3 Mechanics of Metal Cutting
- Merchant's circle diagram- determination of cutting and thrust forces
- Coefficient of friction
- strain and strain rate
- Measurement of shear angle: direct and indirect methods
- Mohr's circle diagram
- slip line field method
- Thin zone model - Lee and Shaffer's relationship
- Thick zone model - Okushima and Hitomi model(analysis)
- Friction in Metal cutting
Unit 4 Mechanics of Oblique Cutting
- Concept of rake angle measured in different planes
- Shear angle
- Velocity and force relationship
Unit 5 Measurement of Cutting Forces
- Cantilever beams
- Dynamometer requirement
- drilling milling and grinding
Unit 6 Tool Wear and Tool Life
- Mechanism of wear
- Progressive tool wear
- Flank wear
- Crater wear
- Model of diffusion wear
- Tool life : Variables affecting tool life- Cutting conditions
- tool geometry
- Tool materials
- work materials
- Cutting fluids
- Determination of tool life equation
- Mach inability
Unit 7 Economics of Machining
- Minimum production cost criterion
- Maximum production rate criterion
- maximum profit rate criterion
- Restriction on cutting conditions
Unit 8 Abrasive Machining Processes
- Grinding: Characteristics of a grinding wheel
- Specification of grinding wheels
- Mechanics of grinding process
- Chip length in horizontal surface grinding
- External and internal cylindrical grinding
- Specific energy in grinding
- Wheel wear
- Thermal analysis
- Selection of grinding wheels
- Honing and lapping operations
Unit 9 Thermal Aspects of Machining
- Regions of heat generation
- Distribution of heat generated
- Equations of flow due to conduction
- heat absorbed and heat generated
- Average shear plane temperature
- Average chip-tool interface temperature Experimental determination of cutting temperature: Tool work thermocouple technique
- infrared photographic technique
Unit 10 Surface Finish
- Ideal and natural roughness
- Surface finish during turning
- milling and grinding
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