In our lives, we often see the processing of mechanical parts. With the development of the processing industry, various mechanical parts processing and precision machining are now very extensive. What is the effect of precision machining?
It is processed at normal temperature and does not cause chemical or phase changes of the workpiece, which is called cold working. Ordinary processing at or above normal temperature will cause work
The chemical or physical phase change of a piece is called thermal processing. Cold machining can be divided into machining and pressure machining according to the difference in processing methods. Hot processing is common with heat treatment, forging, casting and welding
The process effects of fine machining have the following aspects:
1. The geometric shape and mutual positional accuracy of the parts reach the micrometer or angular second level;
2. The boundary or feature dimension tolerance of the part is below micrometer;
3. The microscopic unevenness of the surface of the part (the uniformity of the unevenness of the appearance) is less than 0.1 micron;
4. Mutual accessories can meet the request for cooperation;
5, local parts can also meet the requirements of accurate mechanics or other physical characteristics, such as the change stiffness of the tow bar of the float gyroscope, the stiffness coefficient of the flexible element, etc.
Fine machining is done under harshly controlled environmental conditions using sophisticated machine tools and fine gauges and gauges. Processing accuracy reaches and exceeds 0.1 micron called ultra-fine machining. In the aerospace industry, fine machining is mainly used to process fine mechanical parts in aircraft control equipment, such as fine fittings in hydraulic and pneumatic servos, gyroscope frames, housings, air flotation, liquid bearing assemblies and Float and so on. The fine parts of the aircraft are complex in construction, small in rigidity, high in request accuracy, and the proportion of difficult-to-machine materials is large.