1. Different sizes and shapes: Milling cutters are usually very short, with two rounded edges that have a back angle and can perform cutting. The two edges intersect at a point with almost no transverse edges. The drill bit is relatively long, and the two blade bands on the outer circle have no back angle, only serving to reduce friction. The two blade edges do not intersect at one point, and there is a transverse blade 127.
2. Different functions: The side edge grinding of the milling cutter has a back angle, so it can cut laterally. The side edge of the drill bit does not have a back angle, so it cannot be cut laterally and is mainly used for axial drilling 248.
3. Different processing requirements: Milling cutters are mainly used for milling, such as milling flat surfaces, step surfaces, grooves, formed surfaces, etc. And drill bits are mainly used for drilling holes, such as drilling stainless steel holes
