What are the advantages of CNC machining?

u200b What are the advantages of CNC machining? 1) High dimensional stability, high machining accuracy and good repeatability. The size control is unmatched by the existing RP technology. 2) Wide selection of materials. For example, almost all engineering plastics and metal materials can be processed by CNC milling machines to ensure the consistency of prototypes and mass production materials. 3) The surface finish of CNC machine tool parts is high. After grinding, polishing and surface treatment, its production effect is completely comparable to, or even higher than, mold-opening products. 4) The CNC machine tool can be used continuously for 24 hours a day, and the processing efficiency is high. 5) Compared with RP technology, the processing of small or large batches of parts is more economical.u200b What are the disadvantages of CNC machining? 1) Due to the limitation of the structure of the CNC parts and the stroke of the machine tool, it may be necessary to splice into a whole part after block processing. 2) Due to the geometric limitation of the tool, the Z corner of the workpiece will have rounded corners, which requires manual post-cleaning. 3) Data processing, path design, fixture design. The workpiece needs to be positioned multiple times, and the CNC router processing is carried out step by step, causing human error. 4) The labor cost of programmers and operators is relatively high.