Hello everybody
Our company has followed the requeriments stated in PPAP Handbook from Ford, and it is requested to our stamping suppliers perform a SPC of 125 parts for CC.
Due to timing, for PPAP just 1 production run has been carried out ( mean, with off tool & off process conditions), so the 125 parts to be measured should be form the same batch.
For those batches from pre-series production, the bath quantity are not really bigs. Quantities are usually below 1000 parts
Do you consider such task to have added-value for this technology taking into account the batch sizes? In my opinion, a 30 parts size sampling would already be highly representative, as stamping variations should be low in the same batch. Additionally, to be able to measure from different meters of the coil, you could pick 6 groups of 5 parts for each during the production...
What is your experience regarding SPC for stamped product? How have you usually handled it?
Thanks, regards
Our company has followed the requeriments stated in PPAP Handbook from Ford, and it is requested to our stamping suppliers perform a SPC of 125 parts for CC.
Due to timing, for PPAP just 1 production run has been carried out ( mean, with off tool & off process conditions), so the 125 parts to be measured should be form the same batch.
For those batches from pre-series production, the bath quantity are not really bigs. Quantities are usually below 1000 parts
Do you consider such task to have added-value for this technology taking into account the batch sizes? In my opinion, a 30 parts size sampling would already be highly representative, as stamping variations should be low in the same batch. Additionally, to be able to measure from different meters of the coil, you could pick 6 groups of 5 parts for each during the production...
What is your experience regarding SPC for stamped product? How have you usually handled it?
Thanks, regards