Universal high precision reference spheres for multisensor coordinate measuring machines

• Published in: CIRP annals Vol. 61; no. 1; pp. 487 - 490
• Main Authors: Keferstein, Claus P., Marxer, Michael, Götti, Reto, Thalmann, Rudolf, Jordi, Thomas, Andräs, Matthias, Becker, Jürgen
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Kidlington Elsevier Ltd 2012; Elsevier
• Subjects: Accuracy; Applied sciences; Ball; Calibration; Computation; Coordinate measuring machine (CMM); Coordinate measuring machines; Errors; Exact sciences and technology; Industrial metrology. Testing; Lasers; Mechanical engineering. Machine design; Precision engineering, watch making; Tactile; Tomography; Vision systems; Ball; Coordinate measuring machine (CMM); Calibration; Multisensor; Coordinate measuring machine; Precision engineering; High precision; Tomography
• ISSN: 0007-8506
• DOI: 10.1016/j.cirp.2012.03.018

Reference spheres play an important role in the accuracy of multisensor coordinate measuring machine (CMM) applications. Nowadays there are a number of spheres specialized in the characteristics of different CMM probing systems. This paper presents a unique reference sphere which meets sometimes contradictory requirements of different measurement principles. With this sphere it is possible to qualify all probing systems widely used today. It is suitable for contacting and non-contacting probing systems such as vision systems, chromatic and laser probes and Computed Tomography. With this sphere, it is possible to achieve tactile probing errors of less than 1μm.