Structure: Typically disc-shaped, resembling a thickened gear. The cutting teeth are distributed on the circumference (main cutting edge) and on both side faces (auxiliary cutting edges).
Working principle: The main milling is performed through the circumferential teeth, while the side edges are used to trim the groove wall or machine the step surface perpendicular to the groove. This design enables the finishing of groove width and groove wall in a single pass.
Key advantages: High rigidity and efficiency, making it ideal for producing deep slots with precise width and smooth side walls in a single operation.
