在位移度标注中,对于孔组内各孔的位置精度要求较高,而孔组的定位精度要求并不高的零件,常常采用尺寸公差和位移度混合标注。这种注法的工艺经济性较好,但对单件和小批量生产的检验计量却带来一定的困难。本刊对此作过一些很有启发的讨论,现谈谈自己的粗浅看法。 In displacement marking, the position accuracy of each hole in the hole group is higher, while the hole group is not required to have high positioning accuracy, and the dimension tolerance and the displacement degree are often used. This method of injection technology is better economy, but the measurement of single and small batch production has brought some difficulties. This issue made some very inspiring discussions, now talk about their own superficial view.