Precision parts processing and manufacturing not only need the precision, stability of the machine tool and the accuracy of the tools and fixtures, CNC machining process in order to achieve the precise surface of the parts needs to adopt the ideal processing principle and precise forming movement. However, in actual work, the precise mechanical numerical control machining principle is difficult to realize. In order to realize ultra-precision turning, it is necessary to optimize the cutting amount, so it is necessary to predict the apparent roughness to be obtained. Through the study of the theory of the external surface roughness influencing factor analysis model, the machine tool, unit components, cutting tools, cutting mechanism and cutting process can be further studied.
There are many factors affecting the appearance quality of CNC metal parts processing manufacturers, such as the cutting performance of the additive materials, the accuracy of the spindle movement, the accuracy of the movement of the carriage, the vibration and isolation, the tool and cooling, the cutting parameters, and the environmental conditions. There is a large gap between the ideal value and the ideal value. If only the theory of pursuing precision is used, it will seriously affect the processing efficiency and fail to achieve the expected economic benefits.
The main factors affecting the cold work hardening of CNC hardware parts are the following:
1. Materials to be processed: The hardness of the material to be processed is small, and the greater the plasticity, the more severe the hardening of the material is.
2, the shape of the tool factor: the tool's rake angle, the fillet and the amount of wear behind the tool have a great impact on the cold hardened layer. When the rake angle decreases and the amount of wear on the cutting edge and back increases, the depth and hardness of the hardened layer also increases.
3, CNC hardware parts machining cutting factor: cutting speed and feed rate changes have a greater impact on cold hardening. As the cutting speed increases, the contact time between the tool and the precision part machining workpiece is short, the degree of plastic deformation is small, and both the hardened layer and the hardness are reduced. The feed rate increases, the degree of plastic deformation increases, and the degree of cold hardening on the surface increases.