Supplier Capability and 100% Sort causing Gage Wear

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vardar3

#1
Our supplier is not capable to 1.67 Cpk on a number of SC/CC’s on the print. We would like them to initiate 100% sort, but they brought up a concern that running 100% of their parts over their gage would cause gage wear and probably result in out of spec parts being shipped.

Is there an alternative to 100% sort over a check fixture?
Could begining of run/end of run layouts satisfy these criteria?
How would you respond to this suppliers concerns?

They have to get PPAP’s and we have to PPAP to our customer.
 
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Jim Wynne

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#2
Re: Capability and 100% Sort

Our supplier is not capable to 1.67 Cpk on a number of SC/CC’s on the print. We would like them to initiate 100% sort, but they brought up a concern that running 100% of their parts over their gage would cause gage wear and probably result in out of spec parts being shipped.

Is there an alternative to 100% sort over a check fixture?
Could begining of run/end of run layouts satisfy these criteria?
How would you respond to this suppliers concerns?

They have to get PPAP’s and we have to PPAP to our customer.
This makes no sense. The fact that a Cpk of 1.67 hasn't been achieved doesn't necessarily mean that nonconforming product will be shipped. You have to look at all of the supplier's controls, and you also have to rationally assess the risk involved.

If the supplier isn't capable of meeting the requirements, there should be a containment and improvement plan, approved by your company, in place. This where the decision is made regarding augmented inspection. The supplier has to know that 100% inspection is a possibility in the event of low Cpk results, so his excuse that his gage might wear out should probably be answered by telling him that he's going to need another one, assuming that 100% inspection is actually necessary.
 
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