Precision machining is a machining method with a machining accuracy of 1 micron. Precision machining mainly includes finishing, fine grinding, finishing, fine grinding and grinding.

Precision machining is performed under precisely controlled environmental conditions using precision machine tools and precision gauges and gauges. Processing precision reaches and exceeds 0.1 micron called ultra-precision machining.

The precision machining results are as follows: 1 The geometry and mutual positional accuracy of the parts are up to micron or angular seconds; 2 The limit or characteristic dimensional tolerance of the parts is below the micrometer 3 The surface microscopic unevenness (surface unevenness average height difference) is less than The 0.1 micron 4 mutual fitting can meet the requirements of the mating force; the 5 parts can also meet the precise mechanical or other physical characteristics, such as the torsional stiffness of the torsion bar of the float gyroscope and the stiffness coefficient of the flexible component.

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