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把常见的“非配合尺寸”分为5类:无特殊要求的非配合尺寸;有特殊要求的非配合尺寸;与螺纹连接有关的要素的尺寸;铸造尺寸;冷冲压尺寸。并通过图例,分别论述了GB/T1804—92《一般公差 线性尺寸的未注公差》在这5类尺寸中的应用情况;说明了未注公差尺寸的尺寸链计算方法。
The common “non-fit size” is divided into five categories: non-specific dimensions without special requirements; with non-specific requirements of the size of the screw thread connection with the relevant elements of the size; casting size; And through the examples, the application of GB / T1804-92 “Unprinted tolerances of linear tolerances of general tolerances” in these five types of dimensions is discussed separately. The dimension chain calculation method without tolerance dimension is described.