In light of a gage R&R that will fail (will post the results when complete) on a $4K that someone in my company decided to purchase without the input of Quality, what has been the worst Gage R&R results you have seen from a gage?
Spent $600K on a custom CMM that needed to be in a lab environment. They built a room for it and purchased a sub-standard climate system.
The CMM failed Hex's calibration because of temp fluctuation in it's room. Hex put a sticker on it that looks identical to a calibration sticker on it & told the manager that the machine failed and should be used as reference only. They also put this on the paperwork. (Hexagon did nothing wrong).
Manager (who was in charge of getting the CMM & room & everything up and running) told everyone the machine was good to go ("it has a sticker!!!" was the extent of his brain cells rubbing together) and they used it for two months measuring aircraft parts (nothing ever left the facility). They got all confused when the parts made it to final inspection and they were getting rejected left and right.
LONGGGG story short...the company wanted the parts to be re-measured on the new CMM and the Gage R&R was absolutely laughable it was Ray Charles was measured it with a ruler
The room was figured out, the machine was then calibrated, all is now well. It was a MASSIVE pain for all involved
I worked at a place that was similar except, it was a forge shop and they didn't install proper vibration dampeners. You could watch the X and Y moving, in real time, as much as .002" and management was ok with it... until the customers started rejecting parts.
I worked at a place that was similar except, it was a forge shop and they didn't install proper vibration dampeners. You could watch the X and Y moving, in real time, as much as .002" and management was ok with it... until the customers started rejecting parts.
