Machining Technology Of Industrial Miniature Parts

- May 28, 2019-

Microplastic forming process

The technology used in this process is plastic processing, which is used to manufacture micro parts of millimeter or even micron scale. Forms include micro-injection molding, micro-extrusion forming, micro-stamping forming, micro-casting forming, micro-powder injection molding and so on, and this technology also has the advantages of high accuracy and low cost. On the other hand, the technology has less pollution to the environment, so it is also very popular. However, this technology is also greatly limited by the material, which must have strong plasticity and melting point is not very high material to process, and this material is best after melting has a strong fluidity, thermal expansion and cold contraction can not be too obvious, such restrictions have been very large. For the die, the size of the die used in this technology is not large, and the precision requirement is high. The parameters of the die and the process, including the operation during processing, will affect the parts produced. Therefore, it needs very precise operation and management to run perfectly.

Micro-etching process

These processes include laser ablation, microbial etching, reactive ion etching and so on. Generally speaking, it is a technical means to strip the formed gear from the body under high temperature and pressure environment or through chemical reaction. This kind of processing technology is complex and cumbersome. It does not have the high efficiency and low cost characteristics of the above processes, and is also affected by processing materials. It requires high professional knowledge of personnel. It is only suitable for sample or a small amount of processing, and not suitable for large-scale production.

Dimensional Fine Cutting Processing Technology

This processing technology is based on the traditional mechanical cutting technology, the application of today's ultra-precision processing technology, CNC machine tools, etc., will be the original micro-parts after the performance of the processing technology. This kind of processing technology is very popular, because it has obvious efficiency, low cost, high precision, while the material limitation is not high, there is also a very strong three-dimensional processing effect. This processing technology has become the mainstream in the current market. The effect of this technology is very in line with the mainstream trend of microminiaturization technology, such as material diversity, three-dimensional structure, functional complexity and so on. It is the focus of domestic and international attention nowadays.

There are great differences between micro-machined parts and conventional parts, which are mostly embodied in cutting tools, machine tools, process characteristics, positioning techniques and so on. In the process of processing, different machine tools should be selected according to the characteristics of the parts, and then appropriate clamping methods should be selected according to the structure of the machine tools and parts. Finally, the cutting tools corresponding to the characteristics of the parts should be selected. In order to achieve high precision and high efficiency batch processing, it is necessary to pay special attention to the selection of characteristic size and structure of cutting tools, and to use the latest and best NC machining technology and tool path.