What are the types of burr?
What are the types of burr? |
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| Different types of burr can be produced during manufacturing. The type of burr depends on how the workpiece is machined.
There are four main types: |
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Poisson burrs |
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With poisson (pronounced ‘pwahs-soh’) burrs, the machined material bulges outwards when the tool is applied to the workpiece under a downward force.
This burr can also occur on the edge of the workpiece when the tool removes a layer from the surface laterally. |
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Roll over burrs |
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Roll over burrs are typically produced when a cutting tool exits a material. The sharp tip of the tool pushes the material rather than cutting through or chipping it, thus creating a burr. | |||
Tear burrs |
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A tear burr is created when material is torn away from a workpiece, rather than being sheared. This usually occurs during punching or drilling. | |||
Cut off burrs |
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Cut off burrs are produced when a portion of material falls away from the main workpiece, tearing it and leaving a burr behind. | |||
