Machine tool 3D volumetric positioning error measurement under various thermal conditions

O. Svoboda; P. Bach; G. Liotto; C. Wang

doi:10.1117/12.716567

13 October 2006 Machine tool 3D volumetric positioning error measurement under various thermal conditions

O. Svoboda, P. Bach, G. Liotto, C. Wang

Proceedings Volume 6280, Third International Symposium on Precision Mechanical Measurements; 62801N (2006) https://doi.org/10.1117/12.716567
Event: Third International Symposium on Precision Mechanical Measurements, 2006, Urumqi, China

Abstract

To manufacture good quality or accurate parts, the measurement and compensation of three dimensional volumetric positioning errors of a machine tool are very important. Using a conventional laser interferometer to measure the straightness and squareness errors is very difficult and time consuming. Recently, Optodyne has developed a laser vector technique for the measurement of 3D volumetric positioning errors, including 3 linear displacement errors, 6 straightness errors and 3 squareness errors in a very short time. Using this laser vector technique combine with the data obtained from a set of thermocouples placed at key locations of the machine tool structure, the relations between the machine temperature distribution and the 3D positioning errors can be measured and modeled. The results can be used to compensate the 3D volumetric positioning errors under various thermal conditions. Reported here are the definition of the 3D volumetric positioning errors; the basic theory and description of the laser vector technique; the temperature sensors and the laser vector technique measurement results obtained on a vertical CNC machining center under different spindle load, machine temperature and environmental temperature.

Citation Download Citation

O. Svoboda, P. Bach, G. Liotto, and C. Wang "Machine tool 3D volumetric positioning error measurement under various thermal conditions", Proc. SPIE 6280, Third International Symposium on Precision Mechanical Measurements, 62801N (13 October 2006); https://doi.org/10.1117/12.716567

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