An algorithm for roundness evaluation of crankshaft main journal

Wang, YaXiao; Su, YongShuai; Wang, Hongxi

doi:10.1088/1757-899x/490/6/062052

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…The first dataset was taken from literature [11] and uses the PCTA. The second dataset originated in literature [23]. The third dataset was produced from a quality-control measurement system.…”

Section: Algorithm Verification Using Practical Datasetsmentioning

confidence: 99%

Improved algorithm for minimum zone of roundness error evaluation using alternating exchange approach

Khlil

Shi

Umar

et al. 2022

Meas. Sci. Technol.

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Based on the computational geometry technique, an improved algorithm for minimum zone of roundness error evaluation using an alternating exchange method is presented. A minimum zone fitting function was created to enhance the roundness error evaluation. The function uses three candidate points to determine the initial solution: the expected centre, the mean circle radius, and the corresponding zone half-width. The best solution function is designed to use the initial solution as the input to determine the optimum solution for the minimum zone circle. The proposed algorithm was validated using data available in the literature. The roundness error evaluation comparison results demonstrate that the proposed method accurately detects both the centre error magnitude and minimum zone circle and overcomes the insufficiency of using selected colinear points for four selected points.

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Section: Algorithm Verification Using Practical Datasetsmentioning

confidence: 99%

Improved algorithm for minimum zone of roundness error evaluation using alternating exchange approach

Khlil

Shi

Umar

et al. 2022

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Among them, the shape error of the crankshaft main journal and connecting rod journal is an important indicator to measure the process quality [ 3 , 4 , 5 , 6 ]. Currently, the parameters of crankshaft are generally measured by manually using vernier calipers, spiral micrometers, and three-coordinate measurement [ 7 , 8 , 9 , 10 ], or the contact-type special measurement equipment [ 11 , 12 ]. The former methods need to contact the surface of the part, which will inevitably lead to a certain degree of damage to the surface of the part.…”

Section: Introductionmentioning

confidence: 99%

Precision Measurement Method of Large Shaft Diameter Based on Dual Camera System

Wang

2022

Sensors

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At present, there is a problem that the measurement accuracy and measurement range cannot be balanced in the measurement of shaft diameter by the machine vision method. In this paper, we propose a large-scale shaft diameter precision measurement method based on a dual camera measurement system. The unified world coordinate system of the two cameras is established by analyzing the dual camera imaging model and obtaining the measurement formula. In order to verify the validity of the proposed method, two black blocks in the calibration plate with a known center distance of 100 mm were measured. The mean value was 100.001 mm and the standard deviation was 0.00039 in 10 measurements. Finally, the proposed system was applied to the diameter measurement of a complexed crankshaft. The mean μ95 values of CMM and the proposed method were ±1.02 μm and ±1.07 μm, respectively, indicating that the measurement accuracy of the proposed method is roughly equal to the CMM.

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An algorithm for roundness evaluation of crankshaft main journal

Cited by 2 publications

References 14 publications

Improved algorithm for minimum zone of roundness error evaluation using alternating exchange approach

Improved algorithm for minimum zone of roundness error evaluation using alternating exchange approach

Precision Measurement Method of Large Shaft Diameter Based on Dual Camera System

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