METHOD OF MONITORING GEOMETRICAL PARAMETRES OF COMPONENTS ON COORDINATE MEASUREMENT MACHINE USING REBASING

摘要

FIELD: physics.;SUBSTANCE: method involves mounting a component into a coordinate measurement system, basing it, measuring coordinates, rebasing the component, creating an intermediate base, converting points of one coordinate system to another coordinate system , expressed in form of an orthogonal 4×4 matrix. The reference points for creating the intermediate base used are the following points which relate to structural elements of the component: either the centre of base of blind parallel holes; or points of intersection of three plane faces of the component; or extremum points on the irregular surface of the components (minima and maxima); or a combination of the structural elements of the component listed above. Coordinates of reference points in each case are calculated using the method of minimising the sum of squared deviations and the matrix is presented in form of a product of matrices of parallel translation and rotation about axes, after which all points are transformed into one coordinate system.;EFFECT: monitoring components on a coordinate measurement machine with rebasing without making changes to the structure of the component.;2 cl, 1 dwg