English: Case Overview
This hypothetical hardened mold insert drawing includes 3D contours, small pockets, ribs and polished surface requirements. The tooling plan must protect surface quality while avoiding excessive tool wear. Hard milling requires stable toolpaths, low runout and a controlled finishing allowance.
The suggested tool set includes a corner radius carbide end mill for semi-finishing, ball nose end mills for 3D contours, small finishing tools for ribs and a chamfer or deburring tool for safe edges. Tool coating and holder rigidity are important because hardened steel gives little forgiveness when cutting conditions are unstable.
Finishing Strategy
Use semi-finishing to leave uniform stock before the final pass. Choose ball nose step-over according to surface requirement, and tilt the tool when 5-axis machining is available to avoid cutting at the center of the ball. Inspect tool wear before the final surface pass.
Machining Takeaway
For hardened mold inserts, finishing success depends on stock consistency, ball nose tool selection and stable motion more than aggressive cutting speed.
中文：硬化模具镶件 CNC 精加工配刀案例
这个假设硬化模具镶件图纸包含 3D 曲面、小型腔、筋位和抛光表面要求。配刀方案需要在保护表面质量的同时控制刀具磨损。硬铣对刀路稳定、低跳动和均匀精加工余量要求很高。
推荐刀具包括用于半精加工的圆角硬质合金铣刀、用于 3D 曲面的球头铣刀、用于细小筋位的小径精加工刀具，以及用于安全边缘的倒角或去毛刺刀。涂层和刀柄刚性同样重要。
Français : Cas de finition d’un insert de moule trempé
Un insert de moule trempé demande une surépaisseur régulière, des fraises boule adaptées et une trajectoire stable. La finition doit protéger l’état de surface et limiter l’usure des outils.
Русский: Чистовая обработка закаленной вставки пресс-формы
Для закаленной вставки пресс-формы важны равномерный припуск, шаровые фрезы, малое биение и стабильная траектория. Это помогает получить качественную поверхность без быстрого износа инструмента.
FAQ
Why use semi-finishing before final finishing? It leaves uniform stock so the final ball nose tool sees predictable load.
What affects mold insert surface quality? Step-over, tool wear, holder runout, toolpath smoothness and finishing allowance.
Related reading: Hard Milling Hardened Steel and 5-Axis CNC Milling Tool Orientation.
