What is precision machining?

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Machining method with machining accuracy up to 1 μ M. Precision machining is realized by using precision machine tools, measuring tools and meters under strict control of environmental conditions. It is called ultra precision machining when the machining accuracy reaches or exceeds 0.1 μ M.



The technological effect of precision machining is as follows:


The accuracy of geometrical shape and mutual position of parts can reach micron or angular second;


The limit or feature dimension tolerance of the part is below micrometer;


The surface micro unevenness (average height difference of surface unevenness) of parts is less than 0.1 μ m;


The mutual fittings can meet the requirements of combining force;


Some parts can also meet the requirements of precise mechanical or other physical properties;



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