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Shearing

Shearing sheet metal is an operation performed at Humble with a power shear (also known as a straight shear)

In this process, a sheet of metal is clamped on the work table and the material is cut between a fixed blade and a moving blade requiring no heating or burning. This results in a clean, straight edge free of chips.

Shearing tolerances are typically -0.010 to +0.010 inches and are affected by:

Clearance between blades
Material thickness
Material width
Material hardness
Rake angle of upper blade
Force requird to hold material

Material is often sheared or “blanked” to yield an optimum sheet size for the punching operation.