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Know About Precision Sheet Metal Work

By means of a wide variety of techniques, precision sheet metal can be given all sorts of complex hollow shapes and sections. The equipment used for this type of work ranges from simple hand tools to elaborate power operated automatic machinery.

Precision sheet metal work usually starts with a basic preliminary operation such as cutting, slitting, perforating, etc., performed with tools that exercise a shearing action. Many kinds of shearing devices are available for these purposes. These may be simple hand shears, which are scissor like cutting tools of various shapes and sizes, or hand operated bench shears for heavier gauge materials.

There are several kinds of power driven shearing machines, in general, such machines comprise of a fixed blade and a moved blade. The term punching refers to operations performed with the aid of a punching machine or press, and comprising blanking, piercing and clipping.

A wide range of shaping operations coming under the heading of folding and bending are done on presses and similar machines, as well as such operations as stamping, crimping, beading, seaming and grooving etc. These processes are used for the shaping or stiffening of sheet metal, the forming of tubular sections of circular or other shape and numerous other purposes.

Press forming operations include cupping, which is the conversion of a blank into cup form, and embossing, by which a particular design can be produced on a partly finished component.

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