English: Reconditioning Can Extend Tool Value
Carbide end mill regrinding and recoating can reduce tooling cost when the original tool body is still in good condition. Regrinding restores cutting geometry, while recoating adds wear resistance for the next production cycle. This approach is most useful for high-quality carbide tools, special tools and larger diameters where replacement cost is significant.
Not every worn tool should be reconditioned. Severe chipping, deep cracks, heat damage or excessive diameter loss can make regrinding impractical. After reconditioning, the shop must update tool diameter, length offset and cutting parameters because the tool geometry may no longer match the original value.
SEO machining takeaway
Tool reconditioning works best when inspection, grinding quality and coating selection are controlled. A poorly reground edge can create vibration, poor surface finish and unpredictable tool life.
中文：硬质合金铣刀修磨与重涂什么时候值得做
硬质合金铣刀修磨和重涂可以在刀具体状态良好时降低刀具成本。修磨可以恢复切削几何，重涂可以为下一轮生产提供耐磨保护。对于高品质刀具、非标刀具和较大直径刀具，这种方式更有价值。
并不是所有磨损刀具都适合修磨。严重崩刃、深裂纹、热损伤或直径损失过大，都会让修磨变得不经济。修磨后必须更新刀具直径、长度补偿和切削参数，因为刀具已经不再等同于原始尺寸。
Français : Réaffûtage et revêtement des fraises carbure
Le réaffûtage et le revêtement peuvent prolonger la valeur d’une fraise carbure si le corps de l’outil est encore sain. Le contrôle de la géométrie, du diamètre et du revêtement est essentiel pour maintenir la fiabilité.
Русский: Переточка и повторное покрытие твердосплавных фрез
Переточка и повторное покрытие могут снизить стоимость инструмента, если корпус фрезы не поврежден. После восстановления нужно обновить диаметр, длину и режимы резания.
FAQ
When is regrinding worthwhile? It is most useful for expensive, special or large carbide tools with limited edge wear and no major cracks.
What should be checked after regrinding? Diameter, cutting edge quality, runout, coating condition and updated tool offsets.
Related reading: CNC Tool Wear Diagnosis and CNC Tool Presetting.
