Non-contact ultra-precision metrology of superfine cylinders with a developed two-dimensional coordinate measuring device

Li, Qiaolin; Wang, Yifeng; Li, Jingwen; Wang, Xiaohao; Li, Xinghui

doi:10.1016/j.measurement.2023.113727

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Therefore, research into contact-based methods remains crucial. To overcome the difficulties of measuring small-sized workpieces, relevant teams have proposed a stitching linear scan method using hardware filters [ 29 , 30 , 31 , 32 , 33 , 34 ]. The efficient filtering of high-frequency data and its impact mitigation have been achieved by replacing a diamond stylus with a tip radius of 2 μm with a ruby stylus with a tip radius of 150 μm.…”

Section: Introductionmentioning

confidence: 99%

Comparison Analysis of Roundness Measurement of Small Cylindrical Workpieces with Different Styluses

Wu,

Zeng,

2024

Sensors

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To investigate the high-accuracy roundness metrology of a needle roller 1.5 mm in diameter and 5.8 mm in length using the stitching linear scan method, a ruby ball stylus with a tip radius of 150 μm and a diamond stylus with a tip radius of 2 μm were employed to perform experiments under the same conditions. The precision coordinate data, derived from the needle roller’s cross-sectional circumference, were segmented into uniform eighths, each scanned with the stylus of a roughness measuring machine. The roundness profile of the needle roller was obtained by stitching the arc profiles, which were characterized according to the precision coordinate data of the arcs. The cross-correlation function, Euclidean distance, residual sum of squares, position error, and curvature of the measured arcs were used to evaluate the results, which can reflect the performance of the stylus. A comparison of the results obtained using the ruby ball stylus versus the diamond stylus demonstrates the ruby ball stylus’ greater suitability for use in the roundness metrology of the needle roller bearing examined in this paper.

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Section: Introductionmentioning

confidence: 99%

Comparison Analysis of Roundness Measurement of Small Cylindrical Workpieces with Different Styluses

Wu,

Zeng,

2024

Sensors

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Uncertainty analysis and comparison on non-contact cylindricity measurement systems in fixed and unfixed manners for small-size cylindrical part

Zeng,

Wu,

Liu

et al. 2024

Optical Metrology and Inspection for Industrial Applications XI

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Cylindricity is a key parameter to describe the accuracy and quality of the small-size cylindrical parts. Cylindrical parts such as needle roller bearing is widely used as a core part in RV gearboxes, hydraulic pumps and other mechanical components, and the geometric accuracy of the needle roller affects the performance and service life of the mechanical product. The small-size cylindrical part is also used as precision standard part to help measure and position. The cylindricity error can propagate with the manufacture and assemble process. Therefore, the cylindricity is of great significance in the fields of industrial robots, aerospace, medical devices, and so on. It is necessary to evaluate the cylindricity of the small-size cylindrical part and analyze the measurement uncertainty to guarantee the geometric accuracy and improve the device performances.Non-contact cylindricity measuring of the small-size cylinder is investigated by the chromatic confocal sensor in both relatively fixed and unfixed manners. The uncertainties of the both cylindricity measurement systems need to be analyzed and compared. When applying both measurement systems, the measuring accuracy is negatively affected by angular misalignments of the small cylinder and the measuring light source when the linear scan method is used. When the unfixed scheme is applied, the motion error of the precise translation stage has negative impact on the scanning process. The mounting and distribution error of the light spots effect the scanning coordinate precise when using the fixed scheme. The different sources are discussed respectively. According to the uncertainty result of the coordinates, a measurement uncertainty analysis is carried out through numerical calculations based on a Monte Carlo method. Proven by the experiments, the final result shows the fixed line spot manner has advantages in accuracy due to the better stability of the measurement system.

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High-Precision Chromatic Confocal Technologies: A Review

Li,

Ma,

Bai

2024

Micromachines

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Chromatic confocal technology is widely used for precise, steady, and efficient displacement measurement in many industrial fields. It employs the confocal and dispersion principles to encode axial positions with the wavelengths of the reflected broad spectrum. The typical chromatic confocal sensor includes a light source, a dispersion objective, conjugate pinholes, and a spectral detection device. This study offers an overview of the current research on chromatic confocal technology. Because of its good performance in displacement detection, chromatic confocal technology has been widely used in contour measurement, biomedical imaging, and thickness measurements, as part of global and professional research. Due to its structural flexibility, it is also easily integrated into industrial equipment for in-machine and online profile measurements. It holds significant potential for future applications in industrial manufacturing and scientific research. However, there are also some challenges to be explored in terms of the broadband light source, dispersive optics design, and the balance between speed and accuracy in signal processing.

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Non-contact ultra-precision metrology of superfine cylinders with a developed two-dimensional coordinate measuring device

Cited by 3 publications

References 17 publications

Comparison Analysis of Roundness Measurement of Small Cylindrical Workpieces with Different Styluses

Comparison Analysis of Roundness Measurement of Small Cylindrical Workpieces with Different Styluses

Uncertainty analysis and comparison on non-contact cylindricity measurement systems in fixed and unfixed manners for small-size cylindrical part

High-Precision Chromatic Confocal Technologies: A Review

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