Gauge R&R Studies on a CMM (Coordinate Measuring Machine)

[Fallen30angel - 2010]

Hello all I'm interested to know whether anyone has conducted a gauge R&R on a co-rdinate measuring machine . If yes please can you let me know how you conducted the study.

Thank you for your help one and all

 

[JRKH]

Fallen30angel,

Well I haven't done this, but I'll take a shot at some ideas for you.

First off are we talking about a manual machine ore a CNC controlled CMM?

If manual, you should be able to conduct the study in the same way as with any other instrument. i.e. 10 parts three operators.

If the machine is CNC you might consider doing a capability study instead of a gage R & R.

Or

You could check the same 10 parts on three different days at different times of the day (environmental changes)

Or

You could have three different people write the program to check the same 10 parts.

Hope this gives you some ideas.

Anyone else out there can help?

James

 

[Atul Khandekar]

I think you are right James, you should be able to follow the normal GRR method for CMM.
This article by Rich Knebel of Carl Zeiss may provide some pointers:
http://www.mmsonline.com/articles/109905.html