Some Developments in Coordinate Measuring Techniques

Abstract: The development of coordinate measuring machines (CMMs) is a revolution in dimensional metrology. The recent developments in coordinate measuring techniques are mainly in the following directions. To make them more intelligent. Some steps towards intelligent CMM have been moved. To make them capable of measuring very large parts and measuring the objects in situ. Various non-orthogonal coordinate measuring systems, including articulated arm CMM, laser tracking system, photogrammetric system, light-pen CMM and cylindrical CMM develop quickly in recent years. To further enhance its accuracy. Nano CMM is one of the important achievements in this area. To meet the requirements for measuring various types of objects. Many new types of probes have been developed.