CNC Drilling
CNC Drilling
The tool for drilling is mainly a twist drill and using the drill to process holes in the solid part of the workpiece, it's another important machine process that is different from CNC turning, CNC milling
Drilling is generally done on a drilling machine. For drilling, the process is simple and the machining accuracy is low, but it can meet the requirements for common structural parts.
In addition, the size of the hole is related to the drill bit, which also limits the impossibility of drilling a very large size hole. 
The process of drilling is that the workpiece is fixed and the drill bit turns.
If the holes we machined have high accuracy requests, the boring process will be utilized to improve the part's accuracy, in order to let readers understand the difference between drilling and boring better, we put the corresponding description below.
The tool used for boring is a boring tool, which refers to the further processing of forged, cast, or drilled holes.
Boring can enlarge the hole diameter, improve the accuracy, reduce the surface roughness, and also can better correct the deflection of the original hole axis. It can be divided into rough boring, semi finish boring, and finish boring. The dimensional accuracy of the fine boring hole can reach IT8~IT7, and the surface roughness Ra value is 1.6~0.8μm.
Boring accuracy is high, boring processing is the same as drilling, the workpiece doesn't need to move, only tool rotation, different from drilling, boring machine tools similar to lathes, boring the size of the hole is not limited by the tool, the boring process is always after the drilling process, is based on the original hole reaming.
The boring tool can process a variety of different sizes and different accuracy levels of holes, in addition to coaxial, position accuracy requirements of the hole boring is almost the only method.