Precision machining is what?
It is a kind of processing machinery to change the shape of workpiece size or performance of the process.
It can be divided into cold and hot working.
Generally at room temperature and processing, and do not artifacts caused by chemical or physical phase change, says cold working.
Generally in a state of higher or lower than the normal temperature processing, chemical and phase change will cause the workpiece, said hot working.
Cold working according to the difference of processing methods can be divided into cutting machining and pressure.
Hot working common heat treatment, forging, casting and welding.
Effect of precision machinery processing craft has the following several aspects: 1, parts of geometric shape and position precision of micron or Angle of second level;
2, the boundaries of parts or features size tolerance in micron;
3, parts surface micro roughness (
Average surface roughness height difference)
Less than zero.
4, mutual parts can satisfy the requirement of combining ability;
5, some parts can satisfy the requirement of the precision mechanical or other physical properties, such as float gyroscope torsion bar of torsional rigidity, flexible element stiffness coefficient, etc.
Precision machining is under the condition of strictly controlled environment, the use of precision machine tools and precision measuring tool and measuring tool.
The machining accuracy and more than 0.
1 micron ultra precision machining.
In the aerospace industry, precision machining is mainly used for processing craft control equipment of precision machinery parts
, such as hydraulic and pneumatic servo precision of matching, the framework of gyroscope, shell, air flotation, fluid bearing components and float, etc.
Small craft precision parts
of complex structure, stiffness, require high precision, and larger proportion of difficult-to-machine materials.
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