Comparing the probing systems of coordinate measurement machine: Scanning probe versus touch-trigger probe

Bastas, Ali
An increasing level of research is focalising around the Coordinate Measurement Machine (CMM) as an important dimensional inspection instrumentation, that is utilised in a wide range of industrial metrology applications with its high precision measurement capabilities, flexibility and high measurement speed. The key functional section of the CMM is the probing system, that enables capturing of spatial coordinate data along measurement surfaces. This research compared the measurement performance parameters (measurement uncertainty and measuring time) of the scanning probing system against the touch-trigger probing system, conducting experiments for rectangular and spherical geometries on a CMM. As a result, it was concluded that there are no statistically significant differences between the scanning method uncertainty of scanning probing system and the touch-trigger measuring method uncertainty of touch-trigger probing system for investigated geometries. The scanning method was concluded as quicker with the disadvantage of relatively higher calibration time. Contributions are offered through extending current knowledge on CMM probing systems and guiding industrial CMM measurement strategies.


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Citation Formats
A. Bastas, “Comparing the probing systems of coordinate measurement machine: Scanning probe versus touch-trigger probe,” MEASUREMENT, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: