Sheet Metal Thickness Measurement

Many engineering components are produced from a sheet of metal, which is cut to shape and then folded to form the finished article. The edges are then secured by various methods such as welding, brazing, soldering, riveting etc. The term ‘sheet metal’ is normally used to describe metal sheets with a maximum thickness of 2mm. Above this thickness, it is usual to use the term ‘plate’. The sheets of very low thickness (30 to 50 SWG) are known as foils. The thickness of metal sheets is identified by a series…

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Hand Shearing Tools

Many engineering components are produced from a sheet of metal, which is cut to shape and then folded to form the finished articles. The quickest and easy way to cut sheet metal is by shearing it. Cutting tools for sheet metal are also called shearing tools. Shearing tools which are operated by hand are known as hand operated shearing tools. Most commonly used hand operated shearing tools are as follows: Snip (Hand Shear) A snip is used like a pair of scissors to cut thin and soft metals. Light gauge sheet…

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Shearing Machines & Its Operating Safety Precautions

Guillotine Shears or Machine These are foot operated or power driven. These are used where large sheets are required to be cut with straight edges into strips and rectangular blanks. Sheet width of 600mm x 2mm thick and up to 1200mm x 1.6mm thick can be accommodated on treadle operated guillotine. Guillotines have a moving top blade, which is operated by a foot treadle and a spring, which returns the blade to the top of its stroke. The table is provided with guide to maintain the squareness of work piece….

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Machines Used Sheet Metal Workshop

When a large number of jobs are made, particularly with heavy gauge sheets, hand operations like bending, swaging and rolling are difficult, time consuming and uneconomical. To cope up with this problem, both hand and power operated sheet metal machines are developed. Some of these machines are described in the following paragraphs. Cramp Folding Machine This machine is used for folding or bending thin gauge sheet metal at different angles up to 1350. Bending arms can be adjusted accordingly, when bending sheet metal of different thickness. Slots in the bending…

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