burr
A burr is a rough edge or little projection left on a metal surface after the processes of machining, cutting, or grinding-the last of which is often done in the case of a cut-off piece. Burr is an unwanted byproduct affecting the whole precision and finish of a workpiece.
Key features-:
- Formation Causes: Burrs are formed during plastic deformations occurring during cutting, drilling, milling, or stamping operations. The type and size of burrs depend on the material and the machining done.
- Types of Burrs: Commonly found are rollover burrs, tear burrs, and poisson burrs; they differ with the conditions of machining and behavior of materials.
- Effects on Components: They will cause assembly problems if not removed; they shorten the life of components; in some extreme cases, they can cause safety hazards, especially in high-precision areas.
- Most Important Meaning of Burr Removal: As smooth surface finish and dimensions of parts machined match up, functionalities improve.
There are various deburring methods like mechanical methods (grinding, brushing), thermal deburring, and chemical deburring employed by which burrs could effectively eliminated. Aeroplanes, cars, and the medical device industry put much emphasis on decluttering to meet rigorous quality standards. Continuous improvements in machining and deburring technologies gradually reduce burr formation and improve efficiency in manufacturing.
