What does BUE mean in METEOROLOGY

Built Up Edge (BUE) is an undesired feature of machined parts caused by tool wear, incorrect tool geometry, or improper cutting speeds/feeds. It appears as a raised lip around the edges of a machined part and occurs typically in face milling operations.

BUE can cause problems with both surface finishes and precision dimensions on a machined part. BUE will reduce the effectiveness of any secondary processes such as grinding and polishing, as well as create a poor surface finish due to its raised edge. Additionally, it can cause dimensional variations since the material around the edge has been displaced from its original position.

There are several ways to prevent BUE in machining operations. Using higher grade tools with strong cutting geometries and enough clearance angles is important for preventing unnecessary wear on tool edges which can contribute to BUE formation. Additionally, ensuring that cutting parameters like speed and feed rates are correct before beginning a job can help reduce stress on the tooling which could lead to BUE formation.

Primarily face milling operations are most susceptible to forming built-up edge due to their nature of making intersecting radial cuts along the material surface which can result in excess wear or displacement on tool edges over time. Additional operations such as drilling, reaming, and tapping should also be monitored for potential issues with built-up edge formation due to incorrect cutting parameters or tool angles causing premature wear or breakage.

Temperature control during machining operations is important for maintaining accurate dimensional controls and reducing thermal stress on tools which can lead to deformations and buildups along tool edges resulting in poor quality outputs when using certain materials like aluminum alloys. Adequate lubrication is also important since heat generated from friction between cutting surfaces can accelerate build up along part edges resulting in built-up edge formations.

After completing any face milling operation where built-up edge might have occurred, it's important inspect each finished part using measurement methods such as calipers or micrometers to measure dimensions along affected areas before moving onto secondary processes such as grinding or polishing if necessary. Visual inspection may also be useful for detecting any visible deformations which may indicate presence of built-up edge formations.

Yes, Excessive chatter during a machining operation can cause pockets of material buildup known as “bird nests” especially at high spindle speeds where adhesion forces between cutter teeth and workpiece increase drastically causing irregular displacement along workpiece surfaces leading to build ups and irregularities known as “built up edges” (BUE).

Yes, there are two main types of built-up edges commonly seen in CNC Machined parts; Tool Transition Built Up Edges (TTBUE) & Adhesive Build Up Edges (ABE). TTBUE occur during transition periods when rotating cutters experience sudden changes in direction due to incorrect motion planning programming while ABU occur when metal adheres directly onto cutter teeth leading to accumulation of surrounding material perpendicular to cutter movement causing ridge-like deformations known as “Built Up Edges”.