PSW (Part Submission Warrant) and Design Requirements

[Jafri]

Thanks for reminding the purpose of PPAP.
These are injection molded parts. We do not have time, nor it is easy, to fix the molds based on these findings. If final assembly meets our customer's requirement then it is better not to touch the molds. In which case we may have to change drawing tolerances based on parts, and in the meantime, as you said, give the supplier interim approval.

Unfortunately, we as customer and owner of the design, are learning ourselves. This makes our (Quality's) job that much difficult, because we don't have firm dimensions against which to judge any supplier.

 

[tongxiaozhi]

If some dimensions are out of specification. No box should be checked as the part doesn't meet customer design requirements even if the parts are usable. So, you have several choices
(1) Make noncompliant dimensions compliant
(2) Ask customer to change drawing or engineering specifications.
(3) Ask customer to grant deviation.

 

[try2makeit]

Was a team feasibility done by the Supplier and submitted to you with any concerns in regards of the dimensions?

 

[Jim Wynne]

If some dimensions are out of specification. No box should be checked as the part doesn't meet customer design requirements even if the parts are usable.

Not true in most cases. There's a reason that there are both "Yes" and "No" boxes and there's also a reason that the PSW form says that an explanation is required if "No" is checked.

 

[tongxiaozhi]

Not true in most cases. There's a reason that there are both "Yes" and "No" boxes and there's also a reason that the PSW form says that an explanation is required if "No" is checked.

Thanks, you are right. In this case , we only check "No" with explanations and our customers asked us to do in this way.