以下来自于福特汽车对于MSA中GRR取样的要求，我们已经执行很多年了，非常不错的取样方法，供你参考
Parts for Attribute Gauge R&R Study
• 25% of the parts should be near the lower specification limit (on both sides of the specification).
• 25% of the parts should be near the upper specification limit (on both sides of the specification).
• 30% of the parts should represent the expected process variation.
• 10% of the parts should be outside the upper gauge specification limit and beyond the 25% of
the parts near the specification as described above.
• 10% of the parts should be outside the lower gauge specification limit and beyond the 25% of
the parts near the specification as described above.
当然，以上的要求不止限于10件三人三次，可以12件四人三次等，多种方案；
10件三人三次时，
3个样本靠近规格上限
3个样本靠近规格下限
3个样本靠近规格中心
1个样本超出规格上限或下限；
一般没有问题的话，GRR的研究%和公差%的结果都较好，NDC也大于5
如果不好的话，肯定是有问题要分析再改善的～
RSS Feed
10 个回复
惠惠80 (威望:11) (辽宁 大连) 汽车制造相关 经理 - 外企QM经理及MBB，群主(61625923)为...
赞同来自: chengying229 、rockylion 、LWJ110 、Hsiaozzzzz 、youyouuuuu
Parts for Attribute Gauge R&R Study
• 25% of the parts should be near the lower specification limit (on both sides of the specification).
• 25% of the parts should be near the upper specification limit (on both sides of the specification).
• 30% of the parts should represent the expected process variation.
• 10% of the parts should be outside the upper gauge specification limit and beyond the 25% of
the parts near the specification as described above.
• 10% of the parts should be outside the lower gauge specification limit and beyond the 25% of
the parts near the specification as described above.
当然，以上的要求不止限于10件三人三次，可以12件四人三次等，多种方案；
10件三人三次时，
3个样本靠近规格上限
3个样本靠近规格下限
3个样本靠近规格中心
1个样本超出规格上限或下限；
一般没有问题的话，GRR的研究%和公差%的结果都较好，NDC也大于5
如果不好的话，肯定是有问题要分析再改善的～