What are the procedures and criteria for CNC machining?

CNC machining refers to a process of changing the shape or performance of parts through a kind of CNC machining. According to the difference in processing methods, CNC machining can be divided into cutting processing and pressure processing, one step according to the requirements One-step processing can get better results, especially when performing precision processing. Therefore, this processing procedure is very critical.

• The arrangement of the CNC machining process is considered according to the structure of the part and the condition of the blank and the needs of positioning and clamping. The important point is that the rigidity of the part is not destroyed.

        1. The processing of the first process cannot affect the positioning and clamping of the next process, and the processing of general precision parts interspersed in the middle also needs to be considered. In the installation of synonyms, multiple processes should be arranged first to cause less rigid damage to the parts.

         2. It is recommended to carry out the inner processing procedure first and then the outer processing procedure. The process of machining with the same positioning and clamping method or the same tool is carried out continuously to reduce the number of repeated positioning, the number of tool changes and the number of times of moving the platen, which can effectively avoid the occurrence of errors and improve the processing efficiency.

• The method of centralized sorting and pairing of tools. When machining precision parts, it is necessary to divide the tools that need to be used. Use the same tool to process all the parts that can be completed on the part, and then use the second tool and the third tool to complete it. It can complete the other parts of the right, which can effectively reduce the time of tool change, reduce the time of idle stroke and reduce unnecessary positioning errors.

• Sort by processing parts. For products with more processing content, CNC machining can be divided into several parts according to the characteristics of other structures, such as inner shape, outer shape, curved surface or plane. Generally, the plane is processed first and the positioning is performed. Face, and then machine holes.