电子厂AOI误报太多怎么处理?产线调试经验

AOI误报太多,不能简单让操作员一直点通过,也不能把阈值调松就当解决了。误报多的时候,线上会慢,IPQC也会烦,最后真正的不良反而容易被淹掉。 我遇到过一条线,电阻旁边的丝印反光一直被判成偏移,刚开始大家都怪AOI程序。后面工程师一起看了几块板,发现同一位置在换灯角度后误报少很多,但另一个焊点的少锡又容易漏。最后不是单独调一个参数,而是把光源、拍照区域、元件库高度和首件确认一起改。 现场要先把误报分类:反光、锡珠、偏移边界、极性识别、贴装高度。每类留几张典型图,不然后面换班的人只知道"这台机误报多",不知道到底多在哪里。

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