Introduction
Shearing, also known as die cutting, is a process which cuts stock without the formation of chips or the use of burning or melting. Strictly speaking, if the cutting blades are straight the process is called shearing; if the cutting blades are curved then they are shearing-type operations.
Sheet Metal Cutting
Cutting processes are those in which a piece of sheet metal is separated by applying a great enough force to caused the material to fail. The most common cutting processes are performed by applying a shearing force, and are therefore sometimes referred to as shearing processes.
When a great enough shearing force is applied, the shear stress in the material will exceed the ultimate shear strength and the material will fail and separate at the cut location.
Such cutting processes include the following:
- Shearing - Separating material into two parts
- Blanking - Removing material to use for parts
- Conventional blanking
- Fine blanking
- Punching - Removing material as scrap
- Piercing
- Slotting
- Perforating
- Notching
- Nibbling
- Lancing
- Slitting
- Parting
- Cutoff
- Trimming
- Shaving
- Dinking
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