Three-Dimensional Measurement Method and Device

摘要

The invention relates to a method for the three-dimensional measurement of the co-ordinates of significant points of a part. The inventive method comprises the following steps consisting in: producing a physical measurement standard ( 2 ) that is representative of the part to be measured; taking a measurement, in a meteorology laboratory, of the co-ordinates, XEYEZE, of significant points in a referential system that is linked to the measurement standard ( 2 ); taking a measurement, in an industrial environment, of the co-ordinates of significant points with a measuring device that can provide the three co-ordinates, XE'YE'ZE', of each significant point in a referential system that is linked to the measurement standard ( 2 ); determining the deviation ? for each significant point between the co-ordinates measured in meteorology laboratory conditions, XEYE ZE, and the co-ordinates measured in industrial operation conditions, XE'YE'ZE'; storing the deviation (?) for each significant point in a memory; taking a measurement, in industrial operation conditions, of co-ordinates XPYPZP of each significant point of a part ( 10 ) with the aforementioned measuring device; storing co-ordinates XPYPZP in a memory; using a correction calculator for the digital processing of each co-ordinate XPYPZP comprising the algebraic deduction of deviation ?, such as to obtain corrected co-ordinates XPCYPCZPC'; and digitally processing the corrected co-ordinates, XPCYPCZPC, in order to determine a dimensional defect in the part ( 10 ).