1.From data collection from Mar’15 until Aug’15, data trend is at minimum level. We can not meet the specification requested by customer.
2.In order to achieve requirement of tolerance +0.075 / -0.035, we need to purchase and replace with new parts.
3.But, based on our simulation study with tolerance +0.075 / -0.035, CPK value is low ( < 1.33) and directly will affect our productivity.
4.In order to have CPK (>1.33), we need to have a wider tolerance range. Request spec : 16.96 +0.075/-0.050.