Calibration of Laser Beam Direction for Inner Diameter Measuring Device

Yang, Tongyu; Zhong, Wang; Wu, Zhengang; Li, Xingqiang; Wang, Lei; Liu, Changjie

doi:10.3390/s17020294

Cited by 25 publications

(11 citation statements)

References 21 publications

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“…Eddy current [8], spherical dispersed electric field [9], structured light [10,11], interferometric [12][13][14], and laser triangulation methods [15,16] are examples of noncontact inner diameter measuring techniques. Because of the advantages of assuring high-precision measurements, the use of dispersive confocal methods to tiny displacement and morphological studies has recently become a research hotspot.…”

Section: Introductionmentioning

confidence: 99%

A High-Precision and Wide Range Method for Inner Diameter Measurement

et al. 2022

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Inner diameter measurement technology with high precision and wide measuring ranges is a difficult area to master. It is challenging to achieve high precision and a wide measuring range for inner diameter measurement. The dispersive confocal technique is used to describe a high accuracy, large range approach for measuring inner diameter. The inner diameter is measured utilizing a rotating scanning approach that combines the dispersive confocal technique with least squares. Meanwhile, a plane mirror deflects the optical path of a dispersive confocal sensor, focusing monochromatic light of a certain wavelength on the object’s surface in the radial direction. The measuring range of the device may be modified to fit different objects by modifying the distance between the dispersive confocal sensor and the plane mirror, as well as the eccentricity of the dispersive confocal sensor. Furthermore, this study examines the method’s accuracy and suggests a calibration technique. As a consequence, the procedure may ensure measurement precision as well as a measurement range. Finally, experiments are utilized to test the validity of the strategy. To accomplish a 3 μm inner diameter measurement precision and a measuring range of 76 mm to 150 mm, a dispersive confocal sensor with a range of just 20 mm was utilized.

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Section: Introductionmentioning

confidence: 99%

A High-Precision and Wide Range Method for Inner Diameter Measurement

et al. 2022

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“…Yang et al proposed a kind of inner diameter measuring device by increasing the number of laser displacement sensors. The method can calibrate the direction of three laser beams simultaneously [ 14 ]. The issue is that the methods of laser beam calibration can only obtain the direction vector of the laser beam [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Calibration Method of Articulated Laser Sensor for Trans-Scale 3D Measurement

Kang

Duan

et al. 2019

Sensors

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The articulated laser sensor is a new kind of trans-scale and non-contact measurement instrument in regular-size space and industrial applications. These sensors overcome many deficiencies and application limitations of traditional measurement methods. The articulated laser sensor consists of two articulated laser sensing modules, and each module is made up of two rotary tables and one collimated laser. The three axes represent a non-orthogonal shaft architecture. The calibration method of system parameters for traditional instruments is no longer suitable. A novel high-accuracy calibration method of an articulated laser sensor for trans-scale 3D measurement is proposed. Based on perspective projection models and image processing techniques, the calibration method of the laser beam is the key innovative aspect of this study and is introduced in detail. The experimental results show that a maximum distance error of 0.05 mm was detected with the articulated laser sensor. We demonstrate that the proposed high-accuracy calibration method is feasible and effective, particularly for the calibration of laser beams.

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“…Korosec et al deemed that the final accuracy of the aforementioned industrial applications depends on the accuracy of the data acquisition by sensors and the subsequent data reconstruction [14]. With regards to improving the accuracy of LDS data acquisition, many scholars have carried out a great deal of research on the inherent characteristics of the LDS [15][16][17], the measurement environment [18,19], and the surface properties and geometries of the measured object [20]. It should be specially noted that Dong et al built a quantitative inclination error model and an image sensor inclination error model, the two models effectively improving the data acquisition accuracy of the LDS [21,22].…”

Section: Introductionmentioning

confidence: 99%

An on-machine precision measurement method for API threads

Dong

Sun

Chen

et al. 2019

Meas. Sci. Technol.

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The difficulty in assembling or disassembling a long and heavy drill pipe makes it unsuitable to measure parameters of the American Petroleum Institute (API) threads at both ends of the drill pipe. Accordingly, in this paper we propose an on-machine precision measurement method based on a laser displacement sensor (LDS), and then successfully apply it to a certain API thread-repairing machine tool. This method leverages a NC tool rest to drive the LDS so as to acquire the data of the thread axial section contours. Then, the data are reconstructed using a B-spline curve approximation; that is to say, to make the parameterized data better reflect the features of the thread surface, a knot parameterization factor t is introduced to parameterize the LDS data, and the parameterized data are approximated by a B-spline curve using an improved elitist clonal selection algorithm (ECSA). Finally, feature points are extracted using a reconstruction curve, and thread parameters are calculated in real time to determine the machining quality of API threads. Simulation results indicate that the data reconstruction method with parameterization factor t and improved ECSA have high precision in terms of knots adjustment for B-spline curve approximation. A contrastive experiment of NC50 API thread measurement demonstrates that the proposed fitting method can better reflect the features of the thread surface, thereby effectively improving the accuracy of data reconstruction; meanwhile, the experiment also exhibits that the proposed measurement method can complete the on-machine precision measurement of API threads, with a measurement accuracy of ±2 µm and a measurement time of 14.62 s for a 10 mm long thread.

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Calibration of Laser Beam Direction for Inner Diameter Measuring Device

Cited by 25 publications

References 21 publications

A High-Precision and Wide Range Method for Inner Diameter Measurement

A High-Precision and Wide Range Method for Inner Diameter Measurement

A Novel Calibration Method of Articulated Laser Sensor for Trans-Scale 3D Measurement

An on-machine precision measurement method for API threads

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