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Free vibration analysis of gantry type coordinate measuring machines

Ahmadian, M. T ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2006
  3. Abstract:
  4. Coordinate Measuring Machines (CMMs) are designed for precision inspection of complex industrial products. Even though CMMs have high accuracy in electrical systems, mechanical structures prevent very high accuracy in these machines. Mechanical accuracy of CMMs depends on both static and dynamic sources of error. In automated CMMs, one of the dynamic error sources is the vibration of probes, due to inertia forces resulting from parts deceleration. Modeling of a gantry type CMM, based on the Timoshenko beam theory, is developed and the natural frequencies of the CMM system, at different positions of the probe, are calculated. Findings from the analytical and finite elements method indicate high accuracy and good agreement between the results. © Sharif University of Technology
  5. Keywords:
  6. Finite element method ; Mathematical models ; Natural frequencies ; Probes ; Vibrations (mechanical) ; Free vibration analysis ; Gantry type coordinate measuring machines ; Mechanical accuracy ; Precision inspection ; Coordinate measuring machines ; Coordinate measuring machines ; Finite element method ; Mathematical models ; Natural frequencies ; Probes ; Vibrations (mechanical) ; Frequency analysis ; Modeling ; Vibration
  7. Source: Scientia Iranica ; Volume 13, Issue 2 , 2006 , Pages 206-216 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_2578_0af4b1bd122807beba3862d3ab5c27b9.pdf