Cutting & Shearing

Strictly speaking, if the cutting blades are straight the process is called shearing. The most commonly sheared materials are in the form of sheet metals or plates. The process of straight shearing is done on sheet metal, coils & plates.
The machine use is called a squaring shear, power shear, or guillotine. The sheering machine is hydraulically powered, it works by first clamping the material with a ram. A moving blade then comes down across a fixed blade to shear the material.
For larger shears the moving blade may be set on an angle (this angle is referred to as the shear angle) in order to shear the material progressively from one side to the other, this decreases the amount of force required but increases the stroke. A 5° shear angle decreases the force by about 20%. 

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