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Rev Sci Instrum. 2016 Feb;87(2):025110. doi: 10.1063/1.4941679.

Design of roundness measurement model with multi-systematic error for cylindrical components with large radius.

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Institute of Ultra-precision Optical and Electronic Instrument Engineering, Harbin Institute of Technology, Harbin 150001, China.


The paper designs a roundness measurement model with multi-systematic error, which takes eccentricity, probe offset, radius of tip head of probe, and tilt error into account for roundness measurement of cylindrical components. The effects of the systematic errors and radius of components are analysed in the roundness measurement. The proposed method is built on the instrument with a high precision rotating spindle. The effectiveness of the proposed method is verified by experiment with the standard cylindrical component, which is measured on a roundness measuring machine. Compared to the traditional limacon measurement model, the accuracy of roundness measurement can be increased by about 2.2 μm using the proposed roundness measurement model for the object with a large radius of around 37 mm. The proposed method can improve the accuracy of roundness measurement and can be used for error separation, calibration, and comparison, especially for cylindrical components with a large radius.


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