One sided specification limit - Reference Figure

There is no tolerance for a one-sided specification limit. In this case, the VDA5 allows the tolerance to be replaced by a so-called reference figure RF. Two kinds of reference figures are available in our solara.MP software:

1. Reference figure "Manufacturing process (s and Cp)"

   

   In this case we assume normal distributed production process data and the user must provide in the "Master data" characteristics mask ...

   1. EITHER the upper limit OR the lower limit.
   2. The Reference Figure "Manufacturing process (s and Cp value)".
   3. The minimum required capability index Cp of the manufacturing process.
   4. The total sample size of the data which has been used to calculate the standard deviation (our next field marked as 'e').
   5. The calculated value of the standard deviation of the manufacturing process.

   

2. Reference Figure "Manufacturing process (quantiles and Cp value)"

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   In this case we assume not normal distributed production data and the user must provide in the "Master data" characteristics mask ...

   1. EITHER the upper limit OR the lower limit.
   2. Reference Figure "Manufacturing process (quantiles and Cp value)".
   3. The minimum required capability index Cp of the manufactoring process.
   4. The 50 % Quanile of the distribution model which has been fitted to the manufacturing process data.
   5. If under (a) the upper limit has been used, the 99.865 % quantile of the distribution model which has been fitted to the manufacturing process data.
      If under (a) the lower limit has been used, the 0.135 % quantile of the distribution model which has been fitted to the manufacturing process data.

   Important: Do not fill in both, the 0.135 % quantile AND the 99.865 % quantile. Provide only the required quantile value!