MSA (Measurement Systems Analysis) on a CMM for Special Characteristics

[ram4302]

I have one question about MSA. There are 5 characteristics are identified by our customer as special.We are measuring all the characteristics by using CMM.Whether we need to do MSA for all characteristics? or Will it one study is enough? But the characteristics are different.

Please give your inputs

 

[Jen Kirley]

Re: MSA for special characteristics

Hello,

I think what's important to keep in mind here is that the MSA is for the measurement tools in the system, whose purpose are to evaluate the special characteristics for acceptability. Maybe the same CMM is used to measure all five characteristics. If so, I would expect the analysis to be performed on that tool in the measurement range of those five characteristics (possibly somewhat lower than the minimum and higher than the greatest one). Does this make sense? To summarize, MSA is done on the tool, not the characteristics.

 

[ram4302]

Thank you.You mean to say that we need to group these characteristics as a family and conduct MSA

 

[qusys]

Thank you.You mean to say that we need to group these characteristics as a family and conduct MSA

What did you establish in PPAP with your customer if you just signed it?
Generally soeaking one MSA on equipment should be enough but it is better to agree. You can also consult MSA Blue book guideline. For each equipment yiu can implement short term study based based upon the technology you are running as well as long term studies

 

[ram4302]

Thank you for your inputs