DEVELOPMENT OF A MATHEMATICAL PROCEDURE FOR MODELLING AND INSPECTING COMPLEX SURFACES FOR MEASUREMENT PROCESS

The design and the manufacture of free form surfaces are being a current practice in the industry. Thus the problem of the parts conformity of complex geometry is felt more and more. By this work, a mathematical procedure for modelling and inspecting complex surfaces in measurement process is presented including the correction of geometrical deviations within manufacturing process. The method is based on the Iterative Closest Point (I.C.P.) algorithm for alignment stage between nominal surface and measured points. The finite elements method for geometric compensation STL model generally obtained by a triangulation of nominal model using Computer Aided Design (CAD) software; is used in our proposal. An industrial application concerning a rapid prototyping technology process is presented. This last is used for manufacturing of real parts obtained from a STL file format.