Abstract: A coordinate measuring machine (CMM) inspection and adjustment method includes installing an artifact on the CMM table. The CMM probe is coupled to the artifact and moved to a plurality of positions defined by the artifact so that the CMM generates a plurality of Cartesian coordinate data points. A set of distance equations are generated in terms of the data points, a known dimension of the artifact and unknown CMM axis alignment and scale error factors. The set of equations is solved for the error factors, which are then converted to numbers which represent the magnitude of the needed CMM adjustments. The CMM can then be adjusted to a properly aligned condition according to these numbers.

Abstract: A system and apparatus for inspecting machined parts and determining out of tolerance parts includes a coordinate measuring machine for providing signals representative of the actual locations, relative to an arbitrary coordinate system, of features to be inspected in or on the part. An input device provides signals representative of the nominal locations and the allowable tolerances therefrom of the features relative to a predetermined coordinate system. A programmable data processor operating under the control of a program processes the actual and nominal location signals and causes a mathematical translation and rotation of the actual location signals to their closest fit to the nominal location signals relative to the predetermined coordinate system.