PROCESS FOR MONITORING THE MANUFACTURE OF PARTS BASED ON THE ANALYSIS OF WEIGHTED STATISTICAL INDICATORS

摘要

The invention relates to a method for monitoring a workpiece production flow based on the analysis of at least one statistical indicator representative of a characteristic dimension of the workpieces, according to which: a) Several timepieces are collected over a period of time; samples, each sample comprising several parts of the workflow; (b) The characteristic dimension of each part of the sample is measured; c) For each sample taken, a weighted average and a weighted standard deviation of the characteristic dimension are calculated according to an exponential weighting from ○ an average and a standard deviation of the characteristic dimensions measured on the pieces of said sample, ○ weighted averages and weighted standard deviations of the characteristic dimension calculated for samples taken previously; (d) For each sample taken, a value of the statistical indicator is calculated from the weighted average and the weighted standard deviation thus calculated; e) The value of the statistical indicator thus calculated for the sampled sample is compared to a reference value; f) The workflow of the parts is controlled according to the results of the comparison.