“CNC parts processing” sequence

“CNC parts processing” sequence

In our CNC machining parts, there are often several surfaces that need to be processed. Machining on the surface not only has certain accuracy requirements, but also is very important for the position requirements. In addition, the sequence of processing can not be disordered.

1. In order to ensure the important surface finish of CNC parts, it is necessary to finish the surface of important parts.
2. After finishing datum machining, roughing, semi finishing and finishing should be carried out on the main surfaces with high precision requirements. The surface with high precision needs to be finished.
3. The surface as a precision reference should be machined at the beginning of the CNC part processing process, because it is used to locate other surfaces in subsequent processes. That is, “benchmark first, then others”.
4. It is necessary to use coarse datum to locate the precise datum plane of CNC parts. In single piece production, small batch production and even batch production, for castings and forgings with complex shape or large size, as well as blanks with large size error, the marking process should be arranged before the machining process, so as to provide alignment reference for precision reference processing.
5. For the process prone to waste products, finishing and finishing can be appropriately placed in front, and some minor surface processing can be placed behind.