Click to enlarge template.
Measurement system evaluation = Gage repeatability & reproducibility
MSE = GR&R
The
Lean Six Sigma Academy LLC GR&R Template allows the Black
Belt to assess the performance of the process measurement system and to determine the variability of the appraiser, gage/equipment, and the process itself.
Included are integrated SPC "like" charts linked directly to the template shown. Just input the measured parameters and the charts update automatically. The GR&R Average and Range charts provide the Black
Belt a quick and easy method to visually evaluate the measurement system. The charts may be "copied & pasted" into the Six Sigma Partnering Project Status Report to enhance communication with management.
The acronym "GR&R" stands for Gage Repeatability & Reproducibility. GR&R is a study of the variability and the components of variability associated with a processes measurement system.
The correct formula is: %Total R&R Variation wrt Tolerance =[ (6 x sigma) / tolerance] x 100. Note: Typically measurement system variation is presented as a percentage with respect to either the total variation, which includes part-to-part variation, or to the characteristic's tolerance zone.
%GR&R is short-hand terminology as used in the formula by some firms.
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