汽车装配扭矩不合格怎么排查?返修前先看这几项

汽车装配扭矩不合格,不能只盯着操作员有没有打到位。现场真出过几次问题,最后原因都不一样:有一次是套筒磨损,工具显示到扭矩了,实际贴合不好;还有一次是螺纹里有油污,角度数据看着不对,返修区查了半天。 我现在看到扭矩NG,会先看工具电量和校准状态,再看套筒、批头、螺栓批次、工件孔位有没有毛刺。自动记录里如果只有最终扭矩,没有角度曲线,很多问题不好判断。能调曲线就调出来看,拧紧过程有没有突然跳动,比单看一个数字有用。 返修前把同工位前后几台车的数据拉一下也很重要。只是一台异常,和连续同点位异常,排查方向完全不同。

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