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The requirement of mechanical processing factory for precision of mechanical processing, Nanjing Precision Engineering Co., ltd

by:NJPE     2020-02-14
The mechanical processing factory emphasizes that the mechanical processing should meet a certain precision, which refers to the level at which the main parameters of the actual geometry of the steel parts after mechanical processing are consistent with the idealized values required by the part drawings. The inconsistent level among them is called production and processing deviation. The production and processing precision of mechanical processing factory includes three levels: on the one hand, the specification precision, which limits the specification deviation between standard and standard between the surface layer of production and processing to not exceed the necessary range; On the other hand, the appearance precision of geometric figures limits the appearance deviation of macroeconomic geometric figures on the surface layer of production and processing, such as roundness, cylindricity, parallelism and straightness. On the other hand, it is the precision of each other's parts, which limits the deviation of each other's parts between the standards of the surface layer produced and processed by the mechanical processing plant, such as coaxiality, flatness and parallelism. The precision of production and processing is the level of conformity between the actual specifications, appearance and parts of the surface layer of the parts after production and the main parameters of the idealized geometry specified in the engineering drawings. The main parameters of idealized geometry, in terms of specifications, mean specifications; For the appearance of surface geometry, it refers to circles, cylinders, planar graphs, spherical surfaces, parallel lines, etc; For the mutual parts in the middle of the surface layer, it means parallel surface, vertical, coaxial output, symmetry, etc. In fact, the deviation standard value between the main parameters of geometric figures and the main parameters of idealized geometric figures of parts produced by mechanical processing plants is called the deviation of production and processing. The precision of production and processing and the deviation of production and processing are all professional terms that comment on the main parameters of surface geometry of production and processing. The precision of production and processing shall be considered by Tolerance grade. The smaller the equal tolerance value, the higher the precision; The deviation of production and processing is expressed by the standard value. The larger the standard value, the larger the deviation.
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