English: Burrs Often Come from Weak Support and Dull Edges
Burr control in thin-wall CNC milling is important because thin features can bend, vibrate and leave poor edge quality. Burrs often appear when the cutting edge is dull, the wall is unsupported or the finishing pass pushes material instead of shearing it cleanly. A sharp carbide end mill and stable fixture support are the first steps toward cleaner parts.
Toolpath direction also affects edge quality. Climb milling can improve finish in many operations, but the setup must be rigid enough to handle it. Light finishing passes, balanced feed per tooth and correct axial depth help reduce edge tearing. For very thin sections, temporary support material or staged machining can prevent wall movement.
Practical burr reduction checks
Inspect the cutting edge before finishing, reduce runout and avoid excessive tool pressure near open edges. If burrs appear only on one side, review toolpath direction and part support. Clean chip evacuation also prevents recutting marks along thin walls.
中文：薄壁 CNC 铣削中的毛刺控制
薄壁 CNC 铣削容易产生毛刺，因为薄壁结构会弯曲、振动，并影响边缘质量。毛刺常见原因包括刀具变钝、薄壁支撑不足，或精加工时材料被挤压而不是被干净切除。锋利硬质合金铣刀和稳定装夹支撑，是改善边缘质量的关键。
刀路方向也会影响毛刺。顺铣在很多情况下能改善表面，但装夹必须足够刚性。轻量精加工、合理每齿进给和正确轴向切深，有助于减少边缘撕裂。对于很薄的结构，可以使用临时支撑或分阶段加工来减少变形。
Français : Contrôle des bavures en fraisage CNC de parois minces
Les bavures apparaissent souvent lorsque la paroi est mal soutenue ou que l’arête de coupe est usée. Une fraise carbure vive, un montage rigide et une passe de finition légère améliorent la qualité des bords.
Русский: Контроль заусенцев при CNC-фрезеровании тонких стенок
При обработке тонких стенок заусенцы возникают из-за недостаточной поддержки, вибраций или затупленной кромки. Острая твердосплавная фреза, жесткое крепление и легкий чистовой проход улучшают качество кромки.
