What is machining? What are its classifications?

Machining actually refers to the process of processing raw materials into parts. Its processing is mainly divided into two categories: manual processing and numerical control processing. Usually manual processing refers to mechanical workers manually operating milling machines, lathes, etc. to process various materials, but this is suitable for small batch production and relatively simple parts production. Numerical control processing refers to the mechanical manual processing using numerical control equipment, including machining centers, turning and milling centers, etc. It is mainly suitable for mass production and complicated shape parts.

1. Tolerance requirements

In the process of machining, it is necessary to comply with its regulations and requirements for uninjected shape tolerances. For the length deviation of 0.5mm, the basic size configuration of the casting tolerance zone symmetrical blank casting must meet the relevant requirements.

2. Requirements for cutting parts

Parts need to be inspected and accepted according to procedures. However, it should be noted that after the previous process has passed the inspection, it can be transferred to the next process. The processed parts are not allowed to have burrs, this must be paid attention to. Pay attention to the finished parts when placing them. They cannot be placed directly on the ground, they need to be supported and protected. There must be no rust on the ground and defects that affect performance and cause bumps and scratches in life or appearance.

For the processed surface, it is necessary to pay attention to the phenomenon of crushing and falling off. After the final process is heat-treated, the surface must not have oxide scale, especially the mating surface after finishing, the tooth surface must not be annealed exist. There should be no black skin, bumps and other defects on the surface of the thread after machining. This must be paid attention to.