Metal shearing is a cutting force applied perpendicular to metal causing the material to yield and break. Metal shearing is a process for cutting sheet metal to size out of a larger stock.
During the shearing process, an upper blade and a lower blade are forced past each other with the space between them determined by a required offset. Normally, one of the blades remains stationary.
The shearing process characteristics include:
- Straight-line cuts on flat sheet stock
- Metal placement between upper and lower shear blades
- Burred and slightly deformed metal edges
- Ability to cut relatively small lengths of material at any time since the shearing blades can be mounted at an angle to reduce the necessary shearing force required.
Metal shearing can be performed on sheet, strip, bar, plate, and even angle stock. Bar and angle materials can only be cut to length. However, many shapes can be produced by shearing sheet and plate.