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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Engineering Engineering Drawing 

Objective, Significance & Utility of Engineering Drawing

A drawing is a graphic representation of a real thing. To draw something as a figure by means of lines expressing some ideas on the paper is known as a drawing. The purpose of the drawing is to define and specify the shape and size of a particular object by means of lines and other information about the object. A good drawing gives full information about the object in the shortest and simplest way. A drawing worked out by an engineer, having engineering ideas, for engineering purpose, is known as…

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Effect of Shear Angle (Shearing Machine)

The shearing action can be explained in the following four stages: (a) Stage 1.   As the top cutting member is moved downwards and brought to bear on the metal with continuing pressure, the top and bottom surfaces of the metal are deformed. (b) Stage 2.     As the pressure increases, the internal fibres of the metal are subject to deformation. This is plastic deformation prior toshearing. (c) Stage 3.     After a certain amount of plastic deformation, the cutting members begin to penetrate. The uncut metal ‘work hardens’ at the edges. (d) Stage 4.     Fractures begin…

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Principles of Shearing Machine

Shearing is a general name for most sheet metal cutting, but in a specific sense, designates a cut in a straight line across a strip, sheet or bar. This procedure leaves a clean edge on the piece of the metal that is sheared or cut. Shearing machines are used to cut or shear metal sheets in many ways. The particular method chosen depends on several factors such as the size and shape of the parts required and the numbers needed.The moving cutting member of a shearing machine may be actuated…

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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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Plants Used For Giving Protective Coatings To Metal Components

Many engineering components which are made of sheet metal are given with protective coating to prevent it from corrosion. Protective coating can be in the form of oil, grease, paint, metal spraying, etc. which is to be removed before repair. Some metals form scales of oxide during their storage. For removal of oil, grease, scale etc. various plants and machine are used such as sand blasting plant, degreasing plant. Degreasing plant is used for removing oil and grease from the surface of the job. Sand blasting plant is used for…

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What’s The Point In Welding?

Welding is a process in which two or more pieces of metal are permanently joined together and various welding types allow for different welds to be completed, depending on the circumstances. It’s used in the making of a lot of different everyday objects which use metal pieces, so it’s fundamental for modern life to function as it does today. Regardless of this, many people don’t realize that welding plays such an important role in our lives or how many things are actually created through welding. Welding Uses Many different industries…

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How To Write Your MBA Essay Without Really Trying

All the information your MBA essay needs to be wow the Admissions Committee is already in your mind. Your job is to transfer the information in your memory and thought processes onto the printed page. You have to remember this when you are staring at your admissions essay question. You have to assume this position of control or elese you might do what countless other MBA applicants do-get frozen into procrastination by the seemingly huge and impossible task of writing yourself in a coherent essay. It is always easier to…

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Further Your Colorado Education Online

In today’s busy world, many people that are looking to further their educations are finding it difficult to squeeze the time in their busy days in order to attend on campus classes. If you are in Colorado and are looking to obtain your degree or certificate but your schedule will not allow full time school, you may be interested in attending a Colorado online college. Online courses are perfect for individuals with full time jobs, family obligations, and distance issues that may hinder them from traveling, and the best part…

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