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在生产中我们常会遇到需要对某些零件的对称度进行检验和分选 ,如果没有检具 ,要批量分选是很麻烦的。本文介绍一例对称度的分选方法供参考。1 某零件如图 1示 ,φ8孔对基准Ａ的对称度要求为 0 .0 5ｍｍ。这批零件约有 30 0件 ,其对称度出现较大范围的变化 ,从 0 .0 1ｍｍ到0 .
In production, we often encounter the need to inspect the degree of symmetry of some parts and sorting, if not gage, to batch sorting is very troublesome. This article describes a case of symmetry of the sorting method for reference. 1 a part shown in Figure 1, φ8 holes on the basis of the symmetry A requirements of 0 .0 5mm. About 30 0 parts of this batch of parts, the symmetry of a wide range of changes, from 0 .0 1mm to 0.