MANAGEMENT OF RISKS RELATED TO NON-COMPLIANCE WITH A DIMENSIONAL TOLERANCE OF A CHAIN OF TOLERANCES

摘要

The invention proposes to take advantage of data feedback from measurements in production to perform risk management related to non-compliance with at least one dimensional tolerance of a chain of tolerances defined by a tolerance model linking values from input characteristics to output requirement values. Thus, the invention proposes a tool, a method and a system for automatic risk management comprising a processor (5) configured to:- select an input characteristic, called target characteristic (XT) whose contribution in said chain of tolerances is greater than a predetermined contribution threshold, - replacing the value of said target characteristic (XT) with a test value, - determining an output statistical distribution (C1) according to each test value, - note the part of non-compliance with the tolerances associated with the output requirements, - evaluate a first impact indicator of the risk of non-compliance with the tolerances associated with the output requirements according to each test value, - evaluating a second risk severity indicator representing the weighting of the first risk impact indicator by a probability of occurrence of the test value, and - define a set of sorting criteria (CR1-CR4) graduated on the basis of the first and second indicators. Figure for abstract: Figure 1.