Four tooth milling cutters are mainstream precision machining tools, with core advantages focused on rigidity, precision, and machining stability. The tool core is thicker, the structural rigidity is stronger, and the ability to resist bending deformation far exceeds that of two tooth tools. During cutting, the vibration and swing amplitude are extremely small, and the size control is precise, suitable for semi precision and precision machining scenarios. Four cutting edges participate in cutting synchronously with each rotation, and the cutting load is evenly distributed. The force on a single tooth is smaller, and the wear and heat resistance are outstanding. Paired with a special coating, it can greatly extend the tool life and is suitable for processing hard metals such as carbon steel, stainless steel, and mold steel.

    Multi blade cutting can increase feed rate, refine cutting patterns, improve workpiece surface smoothness, reduce burrs after processing, and significantly reduce subsequent polishing processes. Strong universality, capable of milling flat surfaces, side walls, shallow grooves, and contours, widely used in the processing of molds and precision structural components. The weakness lies in the narrow chip slot and limited chip discharge space. Deep groove and large cutting deep processing are prone to chip blockage and temperature rise, which is not suitable for large groove and deep insertion milling of aluminum parts. It focuses more on precision cutting conditions with small cutting depth and high smoothness. The overall balance strength and precision machining effect are the preferred cutting tools for precision machining of steel parts.