Precision parts processing technology is an advanced manufacturing technology developed to meet the needs of modern high technology, which is the basis of other high-tech practices. It comprehensively uses the new achievements in the development of mechanical technology and modern electronics, sensor technology, optics and computer and other high-tech technologies. It is the basic technology in the high-tech boundary and plays an important role in the modernization of national defense science and technology and the economic construction of the people. At the same time, as the basic technology and an important part of modern high-tech, it promotes semiconductor technology and photoelectric technology , raw material science and other technologies. The machining precision reaches 1 μ m, and the precision parts processing is completed by using precision machine tools, precision measuring tools and meters under strictly controlled environmental conditions.
Precision parts processing
When the machining accuracy reaches or exceeds 0.1 μ m, it is called ultra precision part machining. In aerospace industry, precision parts processing is mainly used to process precision mechanical parts in aircraft control equipment, such as precision mating parts in hydraulic flattening and dynamic servo organization, frame and shell of gyroscope, air flotation, liquid floating bearing components and floats, etc. The structure of aircraft precision parts is complex, the rigidity is small, the precision is very high, and the proportion of difficult to process raw materials is large. The processing efficiency of precision parts is as follows: ① the geometric form and mutual position accuracy of parts reach to micron or angular second level; ② the boundary or characteristic dimension of parts are below micron; ③ the surface micro roughness (surface uniformity height difference) of parts is less than 0.1? Micron; ④ the mutual parts can meet the requirements of coordination; ⑤ Some parts can also meet the requirements of accurate mechanical or other physical characteristics, such as the change of stiffness of torsion bar of float gyroscope, the stiffness coefficient of flexible element, etc.
In recent years, most of the automobile, mold parts and metal processing are made with CNC machine tool as the center, and most of the hole processing is made with advanced equipment such as machining center and CNC machine tool. High-speed and high-precision drilling processing has been put on the agenda. No matter which boundary of precision parts processing, the completion of high-precision and high-speed is an important competitive means to obtain user orders.
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