gauge r and r continued

[lasertracker]

Thanks PSE for your response.

The trouble with the tooling being set by the tracker is that invariably it is not repeatable(due to wear and poor design) therefore everytime an operator revisits it is invariably incorrect and requires resetting. As the errors are constantly changing it is impossible to judge the errors to be found. As for temperature the fluctuation can be as much as +/- 5 degrees.It is noticable that as the temperature changes so does the measurements(jigs are constructed mainly from steel and aluminium).
To compound the situation sometimes the machine is used on the floor other times it would be suspended up to a height of approx 3 metres where it can be influenced to ever changing airlow.
In discussions with the quality department they believe they can conduct a study based on just one jig in one part of the workshop where the conditions are generally better . These jigs are relatively small compared to the larger ones which are probaly at least 6 times bigger.
i have raised my concerns about this process being accurate because of all the varibles involved. To perform it properly i believe would be quite time consuming and
would need to be based over a long period of time,possibly a year. And when you consider the tooling is clearly not repeatable which can be seen even without using the machine personally i do not seem the advantage in performing gauge r and r....... at this stage.
regards

 

[PSE]

From what you have indicated, one possible advantage of running the gage R&R would be to illustrate how bad the conditions are and the resulting gage incapability, (unless the parameters you are trying to measure have large tolerances). The results might spur some action on improving overall conditions. If the R&R gets run, do your best to get some good out of the results.

Regards,