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216 results on '"Guan, Chaoliang"'

12. Influence of Nozzle Distribution on Micro-jet

Author

Yin, Lianmin, Dai, Yifan, Hu, Hao, Xue, Shuai, Guan, Chaoliang, Howlett, Robert J., Series Editor, Jain, Lakhmi C., Series Editor, Yang, Shuming, editor, Luo, Xichun, editor, Yan, Yongda, editor, and Jiang, Zhuangde, editor

Published
2022
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25. In Situ Measurement and Reconstruction Technology of Cylindrical Shape of High-Precision Mandrel.

Author

Xu, Hanwei, Sun, Zizhou, Dai, Yifan, Guan, Chaoliang, and Hu, Hao

Subjects
ARBORS & mandrels, SHAPE measurement, IMAGE reconstruction, MEASUREMENT, WORKPIECES
Abstract

The technology of in situ measurement of cylindrical shapes is an important means of improving the surface machining accuracy of cylindrical workpieces. As a method of cylindricity measurement, the principle of the three-point method has not been fully studied and applied, so it is seldom used in the field of high-precision cylindrical topography measurement. Since the three-point method has the advantages of a simpler measurement structure and smaller system error compared with other multi-point methods, the research on it is still of great significance. Based on the existing research results of the three-point method, this paper proposes the in situ measurement and reconstruction technology of the cylindrical shape of a high-precision mandrel by means of a three-point method. The principle of the technology is deduced in detail and an in situ measurement and reconstruction system is built to carry out the experiments. Experiment results are verified using a commercial roundness meter and the deviation of cylindricity measurement results is 10 nm, which is 2.56% of the measurement results of commercial roundness meters. This paper also discusses the advantages and application prospects of the proposed technology. [ABSTRACT FROM AUTHOR]

Published
2023
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30. Design of Compound Machine Tool for Ultra-Precision Shaft Parts

Author

Sun Zizhou, Dai Yifan, Hu Hao, Guan Chaoliang, Tie Guipeng, and Chen Xuelei

Subjects
Engineering (General). Civil engineering (General), TA1-2040
Abstract

Ultra-precision shaft components are widely used, such as the shaft core of air-floating spindle, etc. At present, the final precision of such workpieces are difficult to reach through CNC machining tools, but often with the help of manual grinding, of which the machining precision and efficiency are greatly limited. Based on the deterministic figuring method, this paper uses an abrasive belt polishing machine to carry out ultra-precision figuring experiments on shaft parts. On this basis, an ultra-precision composite machine tool for shaft parts is designed with the functions of turning, grinding and abrasive belt polishing. The dynamic performance requirements of the machine tool are put forward by analyzing the precision index of the workpiece and the error control principle of deterministic figuring, and the structure of machine tool is designed and the performance parameters of each part are selected. combined with the finite element analysis, the key components are optimized to meet the machining requirements of 0.1μm roundness and 1μm cylindricity on the steel shaft.

Published
2020
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