Recommended optimal blade radius for precision milling of steel

time：

2025-05-28 10:26

source：

Lizhou

During finishing milling steel parts, the optimal blade radius usually depends on the specific requirements and conditions of the machining process. Generally speaking, smaller blade radii, such as 0.2mm or 0.4mm, are more suitable for finishing operations.

These smaller radii can work at shallower depths of cut, reducing vibration and thus achieving better surface finish. .

Recommended radius range :

General finishing ： 0.4–1.2 mm (common range)

Smaller radius ( 0.4–0.8 mm ): Suitable for high surface finish requirements (such as Ra 0.8 μm or less), but the tool wears out faster. Medium radius (

0.8–1.2 mm ): Balances surface quality and tool life, suitable for most finishing scenarios. ): Suitable for high surface finish requirements (such as High-hardness steel (such as quenched steel)

：It is recommended to use 0.2–0.5 mm to reduce cutting force and avoid chipping. For example

CNMG Milling insert

:0.2mm radius blades are suitable for lightweight finishing operations, while radius blades can work at slightly larger depths of cut while still maintaining good surface quality. 0.4mm It should be noted that when selecting the blade radius, the cutting depth should also be considered. The cutting depth should be greater than the feed rate of the blade. It is generally recommended that the cutting depth is

2-3 times the feed rate. In addition, if the cutting depth is less than the blade radius, it may cause excessive friction between the blade and the workpiece surface, affecting the surface quality.

In summary, when finishing milling steel parts, it is recommended to select a limited range of blade radii and adjust the cutting parameters and surface quality according to the actual processing conditions.

In short, when finish milling steel parts, it is recommended to select a limited range of blade radius and adjust cutting parameters and surface quality according to the actual processing conditions 0.2mm or 0.4mm的刀片半径，并根据实际加工条件调整切削参数以及表面质量.

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