The impact and compensation of tilt factors upon the surface measurement error

Li, Sansi; Yang, Yingping; Jia, Xinting; Chen, Mengwei

doi:10.1016/j.ijleo.2016.05.004

Cited by 9 publications

(1 citation statement)

References 6 publications

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“…Moreover, the laser sensor was used to build the on-machine measurement system for the geometric parameters of shaft part [15,16]. As the measurement accuracy is easily disturbed by various factors using the 1D laser sensor [17], Li et al [18] proposed an error compensation method based on the least squares method and function-library compensation method to reduce the tilt error. Furthermore, Lu et al [19] introduced a novel measurement strategy based on a 4D error compensation model for measuring the free-form surfaces in laser measurement systems.…”

Section: Introductionmentioning

confidence: 99%

Measurement and evaluation of wheel profiles of a rail vehicle on an underfloor wheelset lathe

Liu¹,

Li²,

Hou³

et al. 2022

Meas. Sci. Technol.

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Wheel profile form directly affects the dynamic behaviour of rail vehicles. Moreover, it is an important factor to ensure the safe running of a high–speed vehicle. As off–line measurements do not provide high–efficiency and high–accuracy wheel profile measurements, we focused on on–machine measurement and evaluation for obtaining the wheel profiles of a rail vehicle in this study. By combining the wheel machining with the wheel measurement, the measurement and evaluation of radial and axial wheel profiles on the underfloor wheelset lathe were proposed. The measurement of radial wheel profile based on two laser sensors was introduced, and the corresponding error models of on–machine measurement were established. The error models were used to separate the measurement errors from the measurement data. This can improve the accuracy of measuring the radial wheel profile effectively. For measuring the axial wheel profile, an adaptive correction method of profile error was proposed to suppress the measurement error, which was the basis for obtaining an accurate equivalent conicity. By measuring radial and axial wheel profiles, polygonisation evaluation and equivalent conicity were obtained to evaluate the radial and axial dynamic behaviours of a wheelset, respectively. Finally, the measurements were applied to an underfloor wheelset lathe to verify the effectiveness of measuring wheel profiles. In this study, we not only improved working efficiency for the machine tools, but also provided a high–accuracy measurement method for the wheel profiles of rail vehicle.

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