Enhancement of Machining Accuracy Utilizing Varied Cooling Oil Volume for Machine Tool Spindle
In this study, varied cooling oil volume (VOV) control was developed for the oil coolant of a machine tool. This allows adjustment of the oil circulation flow rate in terms of the machining loads and rotational speeds of the spindle to remove the generated heat effectively from the spindle. A mathem...
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8988278/ |
| _version_ | 1819175763204636672 |
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| author | Kun-Ying Li Win-Jet Luo Xiang-Hao Hong Shih-Jie Wei Ping-Hsun Tsai |
| author_facet | Kun-Ying Li Win-Jet Luo Xiang-Hao Hong Shih-Jie Wei Ping-Hsun Tsai |
| author_sort | Kun-Ying Li |
| collection | DOAJ |
| description | In this study, varied cooling oil volume (VOV) control was developed for the oil coolant of a machine tool. This allows adjustment of the oil circulation flow rate in terms of the machining loads and rotational speeds of the spindle to remove the generated heat effectively from the spindle. A mathematical model of the cooling oil flow rate in terms of the rotating speed and torque of the spindle for VOV method is developed. From the thermal deformation experiments with the VOV method, the thermal deformations in both the Y-axis and Z-axis can be greatly reduced, by 70.1 % and 73.5 %, respectively, in variable rotational speed operation with a short operational period (10 minutes). Moreover, the VOV method was applied to shorten the required warm-up time of the spindle. The required warm-up time of the spindle can be shortened by 50 %, while the three axes of the spindle attain stable thermal conditions. In practical machining experiments, the machining accuracy with the VOV method can be greatly enhanced by 34 % to 62 % in comparison with the current case of constant cooling oil volume (COV). The VOV control system in the machine tool spindle can effectively reduce the thermal deformation and shorten the required warm-up time. In addition, the machining accuracy can be greatly enhanced. |
| first_indexed | 2024-12-22T21:00:02Z |
| format | Article |
| id | doaj.art-a37ecd8b031c4288bc19a07fc470e4b1 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-22T21:00:02Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-a37ecd8b031c4288bc19a07fc470e4b12022-12-21T18:12:51ZengIEEEIEEE Access2169-35362020-01-018289882900310.1109/ACCESS.2020.29725808988278Enhancement of Machining Accuracy Utilizing Varied Cooling Oil Volume for Machine Tool SpindleKun-Ying Li0Win-Jet Luo1https://orcid.org/0000-0003-1894-8855Xiang-Hao Hong2Shih-Jie Wei3Ping-Hsun Tsai4Graduate Institute of Precision Manufacturing, National Chin-Yi University of Technology, Taichung, TaiwanGraduate Institute of Precision Manufacturing, National Chin-Yi University of Technology, Taichung, TaiwanDepartment of Refrigeration, Air-Conditioning and Energy Engineering, National Chin-Yi University of Technology, Taichung, TaiwanIntelligent Machinery Technology Center, Industrial Technology Research Institute, Taichung, TaiwanDepartment of Refrigeration, Air-Conditioning and Energy Engineering, National Chin-Yi University of Technology, Taichung, TaiwanIn this study, varied cooling oil volume (VOV) control was developed for the oil coolant of a machine tool. This allows adjustment of the oil circulation flow rate in terms of the machining loads and rotational speeds of the spindle to remove the generated heat effectively from the spindle. A mathematical model of the cooling oil flow rate in terms of the rotating speed and torque of the spindle for VOV method is developed. From the thermal deformation experiments with the VOV method, the thermal deformations in both the Y-axis and Z-axis can be greatly reduced, by 70.1 % and 73.5 %, respectively, in variable rotational speed operation with a short operational period (10 minutes). Moreover, the VOV method was applied to shorten the required warm-up time of the spindle. The required warm-up time of the spindle can be shortened by 50 %, while the three axes of the spindle attain stable thermal conditions. In practical machining experiments, the machining accuracy with the VOV method can be greatly enhanced by 34 % to 62 % in comparison with the current case of constant cooling oil volume (COV). The VOV control system in the machine tool spindle can effectively reduce the thermal deformation and shorten the required warm-up time. In addition, the machining accuracy can be greatly enhanced.https://ieeexplore.ieee.org/document/8988278/Thermal deformationthermal suppressionvaried cooling oil volumemachining accuracy |
| spellingShingle | Kun-Ying Li Win-Jet Luo Xiang-Hao Hong Shih-Jie Wei Ping-Hsun Tsai Enhancement of Machining Accuracy Utilizing Varied Cooling Oil Volume for Machine Tool Spindle IEEE Access Thermal deformation thermal suppression varied cooling oil volume machining accuracy |
| title | Enhancement of Machining Accuracy Utilizing Varied Cooling Oil Volume for Machine Tool Spindle |
| title_full | Enhancement of Machining Accuracy Utilizing Varied Cooling Oil Volume for Machine Tool Spindle |
| title_fullStr | Enhancement of Machining Accuracy Utilizing Varied Cooling Oil Volume for Machine Tool Spindle |
| title_full_unstemmed | Enhancement of Machining Accuracy Utilizing Varied Cooling Oil Volume for Machine Tool Spindle |
| title_short | Enhancement of Machining Accuracy Utilizing Varied Cooling Oil Volume for Machine Tool Spindle |
| title_sort | enhancement of machining accuracy utilizing varied cooling oil volume for machine tool spindle |
| topic | Thermal deformation thermal suppression varied cooling oil volume machining accuracy |
| url | https://ieeexplore.ieee.org/document/8988278/ |
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