With the development of machining technology, many new machining mechanisms have appeared, so in precision machining, especially in micro machining, according to the forming mechanism and characteristics of parts. It is divided into three categories: removal processing, combined processing and deformation processing. Removal processing, also known as separation processing, is the use of force, heat, electricity, light and other processing methods to remove a part of the material from the workpiece, such as cutting, grinding, electrical processing, etc.
The combined processing of processing is to use physical and chemical methods to attach (deposit), inject (infiltrate), and weld a layer of different materials on the surface of the workpiece, such as electroplating, vapor deposition, oxidation, carburizing, bonding, welding, etc. Deformation processing is the use of force, heat, molecular motion and other means to deform the workpiece to change its size, shape and performance, such as casting, forging and so on.
It can be seen that the concept of processing has broken through the traditional removal processing methods, and has the characteristics of accumulation, growth, deformation, etc., and at the same time emphasizes surface treatment, forming a surface processing technology.
Technology and process advantages of precision machining
Compared with the chipless process, the advantages of precision machining of machining are first of all, not only high material removal rate, but also good economy. This is the case, for example, compared to the laser plasma machining process; this is because this process currently only supplies a large amount of energy to achieve a high material removal rate; on the other hand, whether the processed workpiece can meet the dimensional and shape accuracy requirements There is a problem.
Chipless press machining is mainly used for mass production, and often requires subsequent cutting operations to obtain the final qualified workpiece shape. Therefore, the main advantage of machining is to enable the workpiece to achieve higher precision.