What Triggers Tool Wear and Chipping in High-Precision Machining Centers?


 Manifestations of tool damage

(1) Micro-chipping of the cutting edge

When the material structure, hardness, and allowance of the workpiece are uneven, a too large rake angle can lead to low cutting edge strength. Additionally, insufficient rigidity in the processing system can cause vibration, especially during intermittent cutting, resulting in poor grinding quality and making the cutting edge prone to micro-chipping, such as small chipping, notches, or peeling. When this occurs, the tool may lose some cutting ability but can still continue to work. However, continued cutting with a damaged cutting edge may lead to rapid expansion of the damaged area, causing even greater harm.

(2) Chipping of the cutting edge or tooltip

This type of damage usually occurs under more severe cutting conditions than those that cause micro-chipping of the cutting edge, or it can be a more advanced form of micro-chipping. The size and extent of the chipping are larger than micro-chipping, which causes the tool to completely lose its cutting ability and stop working. The chipping of the cutting tool is often referred to as tip drop.

(3) Blade or tool breakage

When the cutting conditions are extremely poor, the cutting amount is too large, there is an impact load, there are microcracks in the blade or tool material, there is residual stress in the blade due to welding and grinding, and the operation is careless, the blade or tool may break. Once this type of damage occurs, the tool cannot be used anymore and must be discarded.


Learn more: https://machining-cnc.com/what-triggers-tool-wear-and-chipping-in-high-precision-machining-centers/

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