"Calibration" or "Validation with CMM machine"

V

Van_H

#1
Im currently on a InPlant calibration proyect, and im going to buy standards and devices to calibrate, one if my advantages is that i have 2 COORDINATE MEASURING MACHINES in my QA Lab, my question is, what instruments can i check with this machine? or what TYPE of instrumenst can I verifiy with it if Im going to Credit my lab on 17025?

Thanks
 
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F

Frank T.

#2
Van H,

Maybe this article could be of some assistance. If not, I am sure other "covers" will chime in.

Bye the way, welcome to the cove. :bigwave:
 
Z

zancky

#3
Hi Van_H (second time?)
as Frank T. posted, the article gives You an idea about "reference" and "traceability calibration" and it is the first issue.
From a very practical and brutal way, commonly You can check go-no-go ring gauge, plug gauge, fork gauge, for You internal production use if You are requiring a uncertainty of measure about ±3micron. The main problem is to write the program that perform the check, expecially if You are apllying Taylor principle (US market) or European standard (there are a lot of tricks and common mistakes). I am wondering to open a thread about the use of CMM and related issues, expecially for Mitutoyo ones

let me know which machine are you using.

bye
 

BradM

Staff member
Admin
#4
You are lucky to have coordinate measurement machines available for your use.:yes: Primarily, the level of confidence that you will have in calibration performed on the CMM will be determined by the confidence in the CMM itself (and your measurement process). Do you have a competent calibration provider for the CMM? On the calibration certificate, they should provide an uncertainty measurement. You can then use that value and the uncertainties calculated in your own measurement process to determine your uncertainty.

Also, you will need to get some good procedures for verifying the instruments, and depending on what it is, standard gauge blocks to use for comparison. Make sure that all the time, effort, and cost is worth it!:D

....I am wondering to open a thread about the use of CMM and related issues, especially for Mitutoyo ones
Please do! We welcome any threads covering topics that are of interest, and appreciate input from all the Covers that visit here!:yes:
 
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