An Assessment and Evaluation of Process Capability of Assessed Quality Features Within a Machined Par

This study evaluated the process variability of individual critical quality features of two machined parts to determine the process capability (sigma level) of the critical features within a machined part. To achieve this, X Bar-s and X Bar- R control charting were utilized with the purpose of evaluating the process stability and predictability through the collection and analysis of potential and current part feature data. This helped visualize how the process data performed relative to the control limits. The "under control" process went through process evaluation to determine the process capability (Cp and Cpk) of the part's critical features.;This study helped the manufacturer determine the level of process capability of the machined parts under study. It also informed the manufacturer about the performance levels of individual part feature and how they contribute to the process capability. The study also helped develop an excel template which the manufacturer could use to assess and evaluate the process performance of quality features for use in continuous improvement activities.