I am performing a gage R&R test for hydraulic hose fittings after being crimped on hoses. I have chosen 10 fittings and marked a location with a blue dot on each one. The upper spec is 21.459 and the lower spec is 20.959 but all of the measurements are coming in between 21.27 to 21.3. According to an article titled "Gage R&R (Repeatability and Reproducibility)" on qualitymag.com (not enough posts to insert a link), you should find parts that represent the full range of tolerance. We are producing these so consistently that I cannot find anything near the top or bottom end of the tolerance.
Should I simulate the upper end of the variation by applying a thin layer of some kind of durable and/or hard tape to the fitting? For the lower end I could maybe hammer a fitting down a bit .
Should I simulate the upper end of the variation by applying a thin layer of some kind of durable and/or hard tape to the fitting? For the lower end I could maybe hammer a fitting down a bit .