Mechanical manufacturing skills have been rapidly developed in terms of improving accuracy and productivity. In terms of improving productivity, increasing the degree of automation is the direction that countries are striving to develop. According to the mechanism and characteristics of the processing method, precision metal processing can be divided into four categories: tool cutting, abrasive processing, special processing and composite processing. With the development of processing technology, many new processing mechanisms have emerged. Therefore, in precision parts processing , Especially in micro-processing, it must be carried out according to the forming mechanism and characteristics of the part. It is divided into three categories: removal processing, combined processing and deformation processing. Removal processing is also called separation processing, which uses force, heat, electricity, light and other processing methods to remove part of the material from the workpiece, such as cutting, grinding, electrical processing, etc. .
Combination processing is the use of physical and chemical methods to attach and weld a layer of different materials on the surface of the workpiece, such as electroplating, vapor deposition, oxidation, carburization, bonding, welding, etc.; deformation processing is the use of force, heat, molecular motion and other means to make the workpiece Deformation occurs, changing its size, shape and function, such as casting, forging, etc. It can be seen that the concept of processing has broken the traditional removal processing methods, and has the characteristics of accumulation, growth, deformation, etc., while emphasizing the appearance processing, forming the appearance processing skills.
Compared with the chip-free process, the cutting process of precision parts has the advantages of high material removal rate and good economy, for example, compared with the laser plasma process. This is because this technology can only achieve a high material removal rate by supplying a large amount of energy. On the other hand, there are still questions about whether the processed workpiece can reach the size and shape accuracy requirements.
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