Bit is one of the important tools for oil drilling. Whether the drill bit adapts to the rock properties and quality plays a very important role in the selection of drilling technology.
Milling cutter:
Milling cutter is a rotary tool with one or more cutter teeth, which is used for milling.
Difference:
1, different sizes
The milling cutter is very short, and the two edges of the excircle have relief angles, which can play a cutting role. The two blades intersect at one point, and there are almost no cross blades, only an integer size;
The drill bit is relatively long, and there is no back angle on both sides of the excircle, which only plays a role in reducing friction. Two sides do not intersect at a point, and there is a horizontal side with many sizes every 0.1mm.
2. Different shapes
The most intuitive difference between a drill and a milling cutter is whether there is a vertex angle at the top, that is, whether there is a tip. The drill bit is used to drill holes, so there should be a vertex angle to help orientation; Milling cutter is used to mill flat surface, mainly relying on edge, without vertex angle.
3. Different functions
The side edge of the milling cutter has a relief angle, so it can be cut sideways, and the side edge of the drill has no relief angle, so it can't be cut sideways, so it is used for axial drilling.
4. Different processing requirements
Milling cutters are mainly used for milling, and drill bits are mainly used for drilling and reaming. Although in some cases, milling cutter can also be used to drill holes, but it is not the mainstream.
Baidu encyclopedia-milling cutter
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