Effect of core thickness on milling cutter

1. Rigidity (Core Impact)

This is the most direct impact of the core thickness.

Large core thickness: The has a large cross-sectional area, strong resistance to bending and torsional deformation. It can effectively suppress vibration and deflection when heavy cutting, large cutting depth, or machining hard materials, ensuring machining accuracy and surface finish, and also reducing the risk of chipping.

Small core thickness: The rigidity is weaker, and it prone to deflection (bending) and vibration. However, under specific conditions, this "elasticity" can absorb some of the impact, which is suitable for some finishing operations machining of thin-walled parts.

2. Chip Space (Chip Evacuation Capacity)

Core thickness and tool outer diameter together determine the size of chip space.

Large core thickness: The chip space is relatively small. This can lead to poor chip evacuation when machining soft materials (such as aluminum, copper) or performing large cutting depths and large feed roughing operations. Chip blockage can exacerbate friction, generate high temperatures, and ultimately lead to accelerated tool wear or even chipping.

Small core thickness: The chip space is spacious, which is conducive to the smooth discharge of long chips, reducing the risk of secondary cutting of chips, and is particularly suitable machining sticky materials such as aluminum alloys.

3. Cutting Force and Power Consumption

Large core thickness: The tool mass increases, requiring greater torque to start speed up. At the same time, during the cutting process, a larger area of the tool base may participate in friction, sometimes increasing some friction resistance.

Small core thickness The tool is more lightweight, requiring less driving torque, but it is prone to deformation under large cutting loads.