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| Sphericity Evaluation Method Based on Quick Search of Spherical Center |
| SHENG Dong-liang1,HAO Juan2,SHENG Qing-yuan1,ZHAN Jian-liang1 |
1. School of Electromechanical Engineering & Transportation, Shaoxing Vocational & Technical College, Shaoxing, Zhejiang 312000, China
2. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China |
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Abstract A sphericity evaluation method based on quick search of spherical center is proposed. Through the established mathematical model and search process, two concentric spheres and the center of the sphere are quickly searched and found. Firstly, use the least squares method to fit the center of the sphere to obtain the farthest point and the closest point from the sphere center to determine the direction of motion of the center of the sphere. Then search for the next center of the sphere in combination with the set step value. Finally, perform multiple iterations calculate until the sphericity meets the requirements. The experimental results show that the sphericity calculation error of the algorithm is less than 1μm, and the calculation efficiency is improved by 7 times, compared with the area search method. It can quickly realize accurate evaluation of sphericity error, meeting the needs of engineering applications.
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Received: 12 October 2021
Published: 13 January 2023
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2023, Vol. 44 
