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Should failure mode caused by Fixture problem be into PFMEA?

J

jelly1921

Quite Involved in Discussions
#1
#1
Background: There were 4 pcs of parts rejected by our customer. Our analysis is that the deformation of these four parts was caused by a fixture during machining. The fixture fixed and no such problem occurs since then.

Question:
Shoud we put such failure mode into PFMEA? (since there is no such failure mode analysis before)
Or should we put such failure mode into fixture FMEA?

Thanks

Jelly
 
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somashekar

somashekar

Staff member
Super Moderator
#2
#2
Re: Should failure mode casued by Fixture problem be into PFMEA?

The part quality is your focus. The fixture use is a part of your process to get quality part consistently.
You have just found a new failure mode in the fixture that effects your product quality and fixed it. In order that it not repeat, you address the new finding in your PFMEA suitably.
 
G

garibati

#3
#3
Re: Should failure mode casued by Fixture problem be into PFMEA?

Hallo Jelly,

I think you should include it in your P-FMEA as said above. The failure cause goes to one of the 5Ms, i.e., Method. This point is an important step for root cause analysis and/or Problem Solving.

___________
Thanks,
garibati
 
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