Re: Do I Need To Do Gage R&r On Each Device Or Just Each Family
Taking what Jim said a bit further, you can perform an MSA on a family of gages provided that they are used for similar measurements on similar parts.
For example, if you have ten 0-1" micrometers that are used to measure the diameter of a family of shafts made on the same equipment to the same tolerance, you could group these into a family. This is based on the similarity of gage, features, process variation and tolerance.
On the other hand, if these gages are used to measure different features on different parts made on different machines, you cannot logically group these into a family. Different features, different process variation and different tolerances. The gages could be grouped as a family around each of the different features, but the gage suitability will probably vary from feature to feature.