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Measurement of form error of a probe tip ball for coordinate measuring machine (CMM) using a rotating reference sphere |
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| Affiliation: | 1. Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;2. International Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China;1. Reishauer AG, Wallisellen, Switzerland;2. Bremen Institute for Metrology, Automation and Quality Science (BIMAQ), University of Bremen, Germany;3. Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, USA |
| Abstract: | This study presents a method of measurement of the form error of the tip ball in the tactile probing systems of a coordinate measuring machine (CMM) by using a rotating reference sphere. The measurement of the form error of the CMM probe tip was conducted without the use of additional external measuring instruments or sensors. The form errors of the probe tip ball and the reference sphere were separated from the probing coordinates of CMM by rotation of the reference sphere. The effectiveness of the proposed method was evaluated based on an uncertainty analysis. The uncertainty in measurement of diameter of the probe tip ball was estimated to be less than 0.5 μm. |
| Keywords: | Metrology CMM Diameter Probe Rotating sphere Calibration |
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