A Normal Displacement Model and Compensation Method of Polishing Tool for Precision CNC Polishing of Aspheric Surface
The position accuracy of the polishing tool affects the surface quality of the polished aspheric surface. The contact deformation among the polishing tool, abrasives, and aspheric part can cause a displacement, which, in turn, will cause a position error of the polishing tool, which will lead to a s...
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MDPI AG
2024-10-01
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| Online Access: | https://www.mdpi.com/2072-666X/15/11/1300 |
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| author | Yongjie Shi Min Su Qianqian Cao Di Zheng |
| author_facet | Yongjie Shi Min Su Qianqian Cao Di Zheng |
| author_sort | Yongjie Shi |
| collection | DOAJ |
| description | The position accuracy of the polishing tool affects the surface quality of the polished aspheric surface. The contact deformation among the polishing tool, abrasives, and aspheric part can cause a displacement, which, in turn, will cause a position error of the polishing tool, which will lead to a significant change in the polishing force. In order to resolve this error, this paper proposed a method of normal displacement compensation for a computer numerical controlled (CNC) polishing system by controlling the polishing force. Firstly, the coupling principle between the polishing force and the position of the polishing tool is expounded, and the relationship between normal displacement and deformation is analyzed. Based on Hertz’s theory, a model of normal displacement is established. Then, on the basis of the decoupled polishing system developed, a normal displacement compensation method was proposed. Finally, a group of comparative experiments was carried out to verify the effectiveness of the proposed method. Compared with no displacement compensation, when the part was polished with the normal displacement compensation method, the value of roughness decreased from 0.4 µm to 0.21 µm, and the unevenness coefficient of surface roughness decreased from 112.5% to 19%. The experimental results show that the polishing quality is improved greatly, and the aspheric surfaces can be polished more uniformly with the method proposed in this paper. |
| format | Article |
| id | doaj-art-352d3be86ec84464a49e4965b8675c5b |
| institution | Kabale University |
| issn | 2072-666X |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj-art-352d3be86ec84464a49e4965b8675c5b2024-11-26T18:13:46ZengMDPI AGMicromachines2072-666X2024-10-011511130010.3390/mi15111300A Normal Displacement Model and Compensation Method of Polishing Tool for Precision CNC Polishing of Aspheric SurfaceYongjie Shi0Min Su1Qianqian Cao2Di Zheng3School of Intelligent Manufacturing, Jiaxing Vocational Technical College, Jiaxing 314036, ChinaMinistry of Basic Education, Jiaxing Vocational Technical College, Jiaxing 314036, ChinaCollege of Information Science and Engineering, Jiaxing University, Jiaxing 314001, ChinaSchool of Mechatronics and Energy Engineering, Ningbo Tech University, Ningbo 315100, ChinaThe position accuracy of the polishing tool affects the surface quality of the polished aspheric surface. The contact deformation among the polishing tool, abrasives, and aspheric part can cause a displacement, which, in turn, will cause a position error of the polishing tool, which will lead to a significant change in the polishing force. In order to resolve this error, this paper proposed a method of normal displacement compensation for a computer numerical controlled (CNC) polishing system by controlling the polishing force. Firstly, the coupling principle between the polishing force and the position of the polishing tool is expounded, and the relationship between normal displacement and deformation is analyzed. Based on Hertz’s theory, a model of normal displacement is established. Then, on the basis of the decoupled polishing system developed, a normal displacement compensation method was proposed. Finally, a group of comparative experiments was carried out to verify the effectiveness of the proposed method. Compared with no displacement compensation, when the part was polished with the normal displacement compensation method, the value of roughness decreased from 0.4 µm to 0.21 µm, and the unevenness coefficient of surface roughness decreased from 112.5% to 19%. The experimental results show that the polishing quality is improved greatly, and the aspheric surfaces can be polished more uniformly with the method proposed in this paper.https://www.mdpi.com/2072-666X/15/11/1300displacement compensationCNC polishingaspheric surfacedeformation |
| spellingShingle | Yongjie Shi Min Su Qianqian Cao Di Zheng A Normal Displacement Model and Compensation Method of Polishing Tool for Precision CNC Polishing of Aspheric Surface Micromachines displacement compensation CNC polishing aspheric surface deformation |
| title | A Normal Displacement Model and Compensation Method of Polishing Tool for Precision CNC Polishing of Aspheric Surface |
| title_full | A Normal Displacement Model and Compensation Method of Polishing Tool for Precision CNC Polishing of Aspheric Surface |
| title_fullStr | A Normal Displacement Model and Compensation Method of Polishing Tool for Precision CNC Polishing of Aspheric Surface |
| title_full_unstemmed | A Normal Displacement Model and Compensation Method of Polishing Tool for Precision CNC Polishing of Aspheric Surface |
| title_short | A Normal Displacement Model and Compensation Method of Polishing Tool for Precision CNC Polishing of Aspheric Surface |
| title_sort | normal displacement model and compensation method of polishing tool for precision cnc polishing of aspheric surface |
| topic | displacement compensation CNC polishing aspheric surface deformation |
| url | https://www.mdpi.com/2072-666X/15/11/1300 |
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