Cutting is the separation or opening of a physical object, into two or more parts, through the application of an acutely directed force.
The tools commonly used for cutting are knives and saws, or in medical and scalpel sciences and microtomes. However, sharp objects are quite capable of cutting if it has considerably greater hardness than the object being cut, and if it is applied with sufficient force. Even liquid can be used to cut objects when applied with sufficient strength (see water jet cutter).
Video Cutting
How it works
Cutting is a phenomenon of press and shear, and occurs only when the total voltage generated by the cutting application exceeds the final strength of the material of the cut object. The simplest equation that can be applied is stress = force/area : The stress generated by the cutting tool is directly proportional to the force applied, and is inversely proportional to the contact area. Therefore, the smaller the area (ie, the sharper the cutting tool), the less power it takes to cut something. It is generally seen that the cutting edge is thinner for cutting soft and thicker material for harder material. This development is evident from kitchen knives, knives, axes, and the balance between the easy cutting action of the thinner blades vs the strength and the thicker edge resistance of the blades.
Maps Cutting
Metal cutting
Cutting has been the core of manufacturing throughout history. For metals many methods are used and can be grouped based on physical phenomena used.
- Making chips - sawing, drilling, grinding, spinning etc.
- Slide - hitting, scratching, cutting.
- Abrading - grinding, lapping, polishing; water jet.
- Heat - fire cutting, plasma cutting, laser cutting.
- Electrochemical - etching, electric displacement machining (EDM).
Each method has limitations in accuracy, cost, and effects on the material. For example, heat can damage the quality of heat treated alloys, and laser cutting is less suitable for highly reflective materials such as aluminum. Laser cut sheet metal produces flat parts and etching and carving parts of complex or simple designs. It is used above other cutting options for fast processing and customizable capabilities.
See also
- Ripped
- Machines
- Water jet cutter
- Slide
- Cutting fires
- Plasma cutting
- Chip formation
- Sharpening the blade
References
External links
- Optimal blade configuration for soft solids cutting
- How it works - Grips
- Etching vs. traditional metal machining
Source of the article : Wikipedia
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