6 DOF calibration of profile sensor locations in an inspection station

Morse, Edward P.; Jaganmohan, Prashanth

doi:10.1016/j.cirp.2020.04.083

Cited by 10 publications

(3 citation statements)

References 5 publications

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“…In section 2, the position relationship denoted as M m c between the camera and the machine as well as the position relationship denoted as M p m between the laser sensor and the machine are unknown, which need to be determined through system calibration. A standard block is inserted to establish the positional relationship between the machine coordinate system, the camera coordinate system, and the laser sensor coordinate system [22,23]. The standard block is cubic in shape with size of 16 × 16 × 6 mm.…”

Section: Calibration Of the Measurement Systemmentioning

confidence: 99%

A method combining laser and vision detection for on-line measurement of small modules gears

Yu,

Li,

Sun

et al. 2024

Meas. Sci. Technol.

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Intelligent production of small modulus powder metallurgy gearing requires rapid and accurate measurement to ensure product quality. Currently, the contact measurement method exemplified by gear measuring centers lack efficiency and require gear mounting reference, which prevent them from meeting the requirements for on-line inspection of small modulus gears. Therefore, an optical method of gears was intensively researched. It combined the advantages of laser and vision inspection, which meet the requirements for accuracy and efficiency in on-line inspection. Based on the measurement principle of the line laser sensor and vision camera, a model of the measurement system was established; a standard block was designed to calibrate the system. The surface data of tooth flank were acquired by laser scanning and evaluated to analyze the accuracy. The result of method was validated by comparison with the gear measurement center. Both are of good agreement. Sufficient experiments verify the feasibility of proposed method for on-line inspection.

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Section: Calibration Of the Measurement Systemmentioning

confidence: 99%

A method combining laser and vision detection for on-line measurement of small modules gears

Yu,

Li,

Sun

et al. 2024

Meas. Sci. Technol.

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“…11–13 Gleason Corporation equips line-structured laser sensors on the double-flank gear tester. 11,14 This instrument combines the analytical measurement (the profile deviation and the pitch deviation) and functional measurement and the measuring time could be less than 10 s. MS3D 15,16 and +Vantage3D 17,18 find a new way in which they develop gear measuring instruments with multiple line-structured laser sensors around the gear to acquire the point clouds. It is quite suitable for the online testing for one kind of gears.…”

Section: Introductionmentioning

confidence: 99%

Modelling of incident light occlusion during gear measuring based on the line-structured laser sensor and analysis on its influence factors

Kou

Sun

et al. 2022

Measurement and Control

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Line-structured laser sensors used in gear measuring provide a new way to acquire the perfect 3-D information of the complicated tooth flank with modification. This method leads to a series of problems, such as incident light occlusion, multiple reflection, system calibration and so on. The incident light occlusion poses severe problem on the integrity of the gear flank data acquired by the line-structured laser sensors. To understand the influence of the incident light occlusion during the cylindrical gear measuring and improve the efficiency of the measurement, this article analyzes this problem in depth. According to the position relation between the line-structure laser sensor and the gear, the projection theory is used to illustrate the incident light occlusion process between adjacent teeth and the model of the occlusion is built up. Four experiments are conducted to verify the validity of the model. This model applies to the cylindrical gear with different parameters. The influence of the modification on incident light occlusion zone could be ignored. On the basis of this model, the influence of the offset and the setting angle of the sensor on the incident light occlusion problem is thoroughly discussed, which gives a guide to control route planning and data acquiring during measuring the perfect information of the tooth flank.

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“…It can easily be integrated with a traditional contact measurement scheme, which is convenient for measurement by switching the techniques, such as the 300 GMSL introduced by Gleason [11,12]. Hexagon [13,14] and Vantage3D [15] have developed respective gear online inspection systems with multi-line laser sensors. Multiple line laser sensors are arranged along the circumference.…”

Section: Introductionmentioning

confidence: 99%

Acquisition and Assessment of Gear Holistic Deviations Based on Laser Measurement

et al. 2022

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Line laser measurement technology is effective for obtaining the 3D point clouds of complex surfaces. Thus, a 3D gear measurement model is established in this study. All the point clouds of gear surfaces are rapidly obtained using a line laser sensor, and the holistic deviations of gear surfaces are acquired by calculating the normal errors of the gear surface. These informative and complete data include traditional gear error items and considerable valuable information that is not deconstructed. To exploit the acquired gear holistic deviations, the structured 3D model is constructed to express tooth surface errors. In this model, the control method of the statistical process is used to define highly representative assessment indicators, and a new gear accuracy assessment system is developed by selecting reasonable indicators. The measurement practice shows that this method exploits the complete information of the gear surface, including all the current accuracy assessment indicators, which can be used to expand the new assessment indicators. This method can be used to characterize the 3D topological tooth surface completely and comprehensively and realize the deep mining and extended applications of the 3D full information of gear surfaces.

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6 DOF calibration of profile sensor locations in an inspection station

Cited by 10 publications

References 5 publications

A method combining laser and vision detection for on-line measurement of small modules gears

A method combining laser and vision detection for on-line measurement of small modules gears

Modelling of incident light occlusion during gear measuring based on the line-structured laser sensor and analysis on its influence factors

Acquisition and Assessment of Gear Holistic Deviations Based on Laser Measurement

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