How to distinguish between CNC fishing and CNC roughing?
CNC machining is also called CNC computer Gong machining.
We generally know that CNC machining fntung is CNC precision parts processing, not only CNC machining,but also right machining, middle machining, finish machining.
In fact, this is all controlled by the knives we use. It does not mean that the finish turning tool for CNC machining is larger than rough turning tool.  

CNC finishing tool is a standard tool,parts processing will not have surface roughngss, there is no place to process in place, tolerance size can be quaranteed. CNC machining rough tool is nog tlie same,
the degree of wear of parts is not the same,. the processing accuracy is not the same, so the surface quality of processing parts and processing accuraicy is closely related.

We usually say that the precision is high and the quality is good. In fact, it means that the surface is smooth and has texture, which can meet the functional requirements of the parts. 
In the process of using CNC machining, the surface of the parts is directly covered in the structure, and even the key to the use of many parts is some surface quality. 
The surface quality of processing parts is often the main requirements of the parts, for example, many parts require high surface hardness, anti-corrosion, anti-rust, and some requirements after surface treatment.

Sutticient and reasonable allowance shall be reserved for finish machining during rough machining. The machining amount of rougt machin!y process is large, while the machining amount of finish machining.

During finish machining, the requirements for the surface are very high. It is possible that a small defect will cause our workpiece to be unusable. Therefore,during CNC finish machining, We can Select the tool and deal with the details.