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2025-08-21 13:34本頁(yè)面
【正文】 table. actions to contain nonconforming parts that were shipped to the customer. changes in part numbers due to an engineering change. any other appropriate information. Note: If additional space is needed attach another sheet of paper and note it in the ments column. KEY PRODUCT CHARACTERISICS DETAIL 13. This number is used for reference to the detailed data on the front of the form.14. The part number is to correspond to the part number on the front page.15.13. a. Up to 12 KPC39。s per part can be listed. If there are more than 12 KPC39。s on a part use additional lines. (Corresponding lines on the front page should be skipped).b. PR is the performance ratio for variable data and is calculated asNote: For attribute characteristics enter the percent nonconforming number in this column.c.b. Ppk is the performance index for variable data and it is calculated as the minimum ofNote: For attribute characteristics enter the % sign in this column.Note: It is recognized that other established measures are appropriate in certain situations (. individual and moving range, one sided tolerances, etc.). In such cases the supplier and the customer will determine the most appropriate means of reporting the data.CONTINUOUS IMPROVEMENT GP8 RULES FOR COLLECTING DATA AND CALCULATING PR AND Ppk All submissions must include a minimum of 100 pieces with a minimum of 20 sub groups. Data is to be collected so that variable charts include mon sources of variation. . shift change, material change, etc.. Although special causes of variation are not to be included in the calculation of PR and Ppk they are to be identified on the control charts along with a notation of the corrective action taken. When calculating PR and Ppk for a given set of data, and Cpk=the minimum of can be used to estimate the values when the process is statistically stable. However, when calculation for Cpk is very close to the minimum required values (. ) Ppk = the minimum of is to be used to insure an accurate calculation.
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