Tolerance design and technological guarantee for reflecting mirror positioning central shaft size

In this paper, according to the structural features of large reflecting mirror positioning system and the fitting requirement and professional standard of 'Matched Fit,' we explained in detail for the design principle if machining tolerance of the reflecting mirror fitting hole and positioning central shaft. The design procedure and computing method of the tolerance and the technological design process and the guaranteeing measurement when the 'Matched Fit' mode of production is adopted.