During the machining process of CNC machining parts, the deformation state of the parts is very easy to occur, and shape changes are inevitable in the actual machining process. However, it is necessary to control the mechanical deformation range of CNC machining parts. During the machining process, the internal force state is an important factor that affects the machining accuracy. During the processing, some parts may also get stuck due to the influence of the lathe's four melon chuck. This centripetal force has a control effect and can promote the rational processing of mechanical parts. During the processing process, mechanical processing enterprises are also affected by inward forces. In order to ensure the tightening of mechanical parts, mechanical part processing enterprises must control the cutting size of the machinery to ensure the improvement of the overall clamping force of the machinery and meet the requirements of actual mechanical processing work.

In order to prevent rough deformation of mechanical parts during processing, heat treatment is necessary to effectively control mechanical deformation. The precision turning operation should do a good job in clamping the parts, implementing relevant grinding processes, and controlling the reference plane of the precision turning. During and after processing, the deviation of the inner hole of the boring machine should be controlled to meet the requirements of actual work.

Effective positioning and processing control are required for grinding surfaces. In actual construction, some CNC machining parts processing companies' precision turning and boring machines are not accurate enough. This machine tool processing method is not conducive to the processing and accuracy control of mechanical parts. To solve this problem, it is necessary to adopt new processing methods and carry out mechanical processing after heat treatment to meet the needs of practical work.

After processing heat treatment, CNC machining parts also exhibit a series of deformation states. Some lightweight and suitable mechanical parts have a small length. After a series of processing and heat treatment, after being placed for a period of time, there may be bending, known as straw hat bending. After testing and testing, it has been found that the radius of the parts is long, and the deformation state of some parts is caused by their own internal stress. In order to meet practical work requirements, it is necessary to control internal stress to maintain its equilibrium state and improve the overall stability of the parts.