GEOMETRIC CALIBRATION OF CMMs USING 3D LENGTH MEASUREMENTS

• Abstract:

  This paper presents a new calibration method for larger size co-ordinate measuring machines (CMMs). This method provides 21 parametric errors by performing 1-dimensional length measurements in the workspace of a CMM. A special measurement set up is realised, which enables automated volumetric error compensation of CMMs at their production stage. Located in a corner of the measuring volume, this laser set up performs multiple spatial linear interferometer measurements by movement of a CMM automatically. In this paper emphasis is placed on; i) automation of spatial laser interferometer measurements, ii) minimising cosine errors by optimisation of the interferometer signal, iii) measurement strategy and iv) verification of the calibration.
• Keywords:

  Co-ordinate Measuring Machine, volumetric calibration, parametric errors, interferometer
• Download:

  IMEKO-WC-2000-TC14-P362.pdf
• DOI:

  _unreg_wc-2000.362

Event details:

• IMEKO TC:
• Event name:

  XVI IMEKO World Congress
• Title:

  Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future

• Place:

  Vienna, AUSTRIA
• Time:

  25 September 2000 - 28 September 2000