Machining Science
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Machining Science
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Engineering Academy
Learn Without Limits: Free Engineering Courses
Course type
Watch to learn anytime
Course duration
598 Min
Course start date & time
Access anytime
Language
English
This course format through pre-recorded video. You can buy and watch it to learn at any time.
Course content
The course is readily available, allowing learners to start and complete it at their own pace.
Machining Science
20 Lectures
598 min
Introduction
27 min
Mechanism of plastic deformation
29 min
Basic machining parameters, Cutting Tools & Types of Machining
29 min
Types of Chips, Tool nomenclature and tool angles
30 min
Tool nomenclature in Normal Rake System
28 min
Selection of Tool angles
29 min
Forces in machining
30 min
Stress, Strain and Strain Rate
30 min
Numerical Examples
29 min
Friction in metal cutting
30 min
Practical Machining Operations
30 min
Slab Milling; Measurement of Cutting Forces
31 min
Dynamometers
32 min
Factors affecting tool life
30 min
Mechanics of Grinding Process
30 min
Chip Length and specific energy in Grinding
30 min
Grinding wheel wear, Oblique Cutting
31 min
Rake angles in oblique cutting
30 min
Economics of Machining
33 min
Surface Finish
30 min
Course details
Machining science involves the study of the principles and processes of material removal, focusing on the interactions between cutting tools, workpieces, and machine tools. It encompasses the mechanics of cutting, tool wear, surface finish, and the effects of various machining parameters such as speed, feed, and depth of cut. Understanding machining science is crucial for optimizing machining operations, improving product quality, and reducing costs. By applying scientific principles and analytical techniques, machinists and engineers can predict and control machining outcomes, troubleshoot problems, and develop innovative solutions for complex machining challenges. Effective application of machining science enables the production of high-precision parts and components with optimal surface finish, dimensional accuracy, and material properties.
Source: Youtube Channel NPTEL
Course suitable for
Automotive Mechanical
Key topics covered
- Mechanics of Cutting:
- Cutting forces and power
- Tool geometry and materials
- Tool Wear and Failure:
- Wear mechanisms and types
- Tool life prediction and optimization
- Surface Finish and Integrity:
- Surface roughness and topography
- Residual stresses and surface damage
- Machining Parameters:
- Speed, feed, and depth of cut
- Optimization techniques
- Machining Processes:
- Turning, milling, drilling, and grinding
- Advanced machining techniques (e.g., CNC, EDM)
- Materials and Machinability:
- Material properties and behavior
Why people choose EveryEng
Industry-aligned courses, expert training, hands-on learning, recognized certifications, and job opportunities—all in a flexible and supportive environment.
- Industry Veteran
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Engineering Academy
Learn Without Limits: Free Engineering Courses
Questions and Answers
A: Conventional machining involves manual control of machine tools such as lathes, milling machines, and drills, where the operator directly controls the cutting process. CNC (Computer Numerical Control) machining, on the other hand, uses computer programs to automate and control machine tool operations, allowing for higher precision, repeatability, and efficiency. CNC machines can produce complex geometries and are widely used in modern manufacturing. For more details, you can refer to: https://www.sciencedirect.com/topics/engineering/computer-numerical-control
A: Surface finish in machining is influenced by factors such as cutting speed, feed rate, tool geometry (rake and clearance angles), tool sharpness, depth of cut, machine stiffness, workpiece material, and the use of cutting fluids. Higher cutting speeds and lower feed rates generally improve surface finish, while tool wear tends to degrade it. Understanding and optimizing these parameters are key to achieving the desired surface quality. For an in-depth explanation, see: https://www.twi-global.com/technical-knowledge/faqs/what-is-surface-finish
A: Chatter is a self-excited vibration phenomenon that occurs during machining, caused by the interaction between the cutting tool and workpiece. It results in an unstable cutting process, producing poor surface finish, excessive tool wear, noise, and sometimes damage to the machine. Chatter can be mitigated by adjusting cutting parameters (such as speed and depth of cut), increasing machine rigidity, using dampers, selecting proper tool geometry, or changing the toolpath. More on this topic: https://www.machinedesign.com/machining-cutting/article/21836849/what-is-chatter-in-machining
A: Cutting tool materials are chosen based on hardness, toughness, wear resistance, and heat resistance. Common materials include High-Speed Steel (HSS), Carbides (tungsten carbide), Ceramics, Cubic Boron Nitride (CBN), and Polycrystalline Diamond (PCD). HSS is versatile and tough but less wear-resistant than carbide. Carbides offer higher hardness and wear resistance, suitable for high-speed machining. Ceramics and CBN are used for harder materials and high-temperature conditions, while PCD is ideal for non-ferrous and abrasive materials. For detailed tool material selection: https://www.efunda.com/processes/machining/tool_materials.cfm
A: Cutting parameters directly influence tool life through their effect on temperature, forces, and wear rates. Higher cutting speeds generate more heat, accelerating tool wear but can improve productivity if optimized. Feed rate affects the thickness of material removed per tooth engagement; excessive feed can cause mechanical overload and wear. Depth of cut influences the volume of material removed and cutting forces; deeper cuts increase load and wear. Finding the optimal balance maximizes tool life and machining efficiency. The Taylor tool life equation often models this relationship. More info: https://www.ispatguru.com/tool-life-tool-lifetime-in-machining/
A: Coolants help reduce temperature at the cutting zone, diminish tool wear, improve surface finish, and flush away chips. They can also reduce cutting forces and prevent workpiece deformation. However, using coolants can increase cost, require maintenance to avoid microbial growth, sometimes cause environmental concerns, and potentially pose health risks. In some machining operations, dry machining or minimum quantity lubrication (MQL) is preferred to mitigate these issues. For more information: https://www.machiningcloud.com/blog/coolants-in-machining
A: High-Speed Machining (HSM) refers to machining operations performed at substantially higher cutting speeds than traditional machining, enabled by advanced machine tools, tool materials, and control systems. Benefits include reduced cycle times, improved surface finish, decreased cutting forces, and enhanced dimensional accuracy. However, it requires careful selection of tools and parameters due to increased thermal loads. HSM is particularly beneficial in aerospace and die/mold industries. More details here: https://www.efunda.com/processes/machining/high_speed_machining.cfm
A: Machine tool rigidity refers to the ability of the machine structure to resist deflections and vibrations during machining. High rigidity ensures minimal tool and workpiece movement, maintaining dimensional accuracy and surface finish quality. Insufficient rigidity can cause chatter, dimensional errors, and increased tool wear. Rigidity depends on machine design, foundation, joints, and assembly quality. Enhancing rigidity is crucial for precision and high-speed machining. For more insights: https://www.mmsonline.com/articles/rigid-fixtures-lead-to-accurate-machining
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