Configuration of tightening tool

Abstract

Provided is a method and device for determining a configuration of a tightening tool. The method comprises acquiring a set of observed values of a property of a tightening performed by the tool and affecting a clamp force of a fastener to which a tightening operation is applied, removing any observed values from the set representing non-allowable values applied to the fastener during the tightening operation, determining that the set of observed values from which the non-allowable values have been removed complies with a normal distribution, determining that a spread metric based on standard deviation of the normal distribution is within an allowed range and setting lower and upper allowable values for said property for a tightening operation to be applied by the tightening tool based on at least one of the standard deviation and mean value of the normal distribution.

Dependencies are inferred from the claim text.