1. Different drilling types: PCB drills are mainly used for drilling circuit board holes with small diameter and high precision, while twist drills are mainly used for drilling metal materials and plastic materials with large diameter and deep processing depth.
2. Different drill shapes: PCB drill is slender, generally cylindrical or conical, which can be used for high-speed and high-precision positioning drilling; Twist drill bit is short, usually spiral, and can be used for deep hole machining and rough machining.
3. Different drilling purposes: PCB drill is mainly used for drilling and conducting, that is, connecting various circuits, and twist drill is mainly used for making threaded holes, assembly holes, through holes, etc.
4. Different processing methods: PCB drills generally adopt high-speed and high-precision rotary processing methods, while twist drills adopt a composite processing method of rotation and feed, which can carry out high-speed, high-efficiency and high-precision drilling processing.