Research on Thermal Characteristics of Ball Screw Feed System Considering Nut Movement
The heat generated by the ball screw feed system will produce thermal errors, which will cause the positioning accuracy to decrease. The thermal simulation modeling of the ball screw feed system is the basis for compensating thermal errors. The current thermal characteristic modeling method simplifi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/9/11/249 |
| _version_ | 1797509612827574272 |
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| author | Hongliang Liu Zhaofeng Rao Ruda Pang Yaoman Zhang |
| author_facet | Hongliang Liu Zhaofeng Rao Ruda Pang Yaoman Zhang |
| author_sort | Hongliang Liu |
| collection | DOAJ |
| description | The heat generated by the ball screw feed system will produce thermal errors, which will cause the positioning accuracy to decrease. The thermal simulation modeling of the ball screw feed system is the basis for compensating thermal errors. The current thermal characteristic modeling method simplifies the reciprocating movement of the nut pair on the screw shaft to varying degrees, which leads to a decrease in simulation accuracy. In this paper, the nut is regarded as a moving heat source, and a novel method is adopted to make the moving process of the heat source closer to the actual nut movement process. The finite difference method is used to simulate the temperature field and thermal error of the ball screw feed system under different working conditions. Firstly, based on the heat transfer theory, the heat conduction differential equation of the feed system is established and discretized. The thermal error model of the ball screw feed system is established. Then, the relationship between nut heat source position and operating time is established to simulate nut reciprocating motion. Finally, the temperature and thermal error experiments of the ball screw feed system were carried out, and the temperature experiment results were compared with the simulation results of the finite difference method. The results show that the maximum simulation error of the average temperature in the operating interval is 11.4%, and the maximum simulation error of thermal error is 16.4%, which verifies the validity and correctness of the method. The thermal characteristic modeling method of the ball screw feed system proposed in this paper has a substantial application value for accurately obtaining the temperature field of the feed system. |
| first_indexed | 2024-03-10T05:20:38Z |
| format | Article |
| id | doaj.art-4c24bd1f7fe6446cbc40673faeac4883 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-10T05:20:38Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-4c24bd1f7fe6446cbc40673faeac48832023-11-23T00:05:47ZengMDPI AGMachines2075-17022021-10-0191124910.3390/machines9110249Research on Thermal Characteristics of Ball Screw Feed System Considering Nut MovementHongliang Liu0Zhaofeng Rao1Ruda Pang2Yaoman Zhang3School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, ChinaSchool of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, ChinaSchool of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, ChinaSchool of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, ChinaThe heat generated by the ball screw feed system will produce thermal errors, which will cause the positioning accuracy to decrease. The thermal simulation modeling of the ball screw feed system is the basis for compensating thermal errors. The current thermal characteristic modeling method simplifies the reciprocating movement of the nut pair on the screw shaft to varying degrees, which leads to a decrease in simulation accuracy. In this paper, the nut is regarded as a moving heat source, and a novel method is adopted to make the moving process of the heat source closer to the actual nut movement process. The finite difference method is used to simulate the temperature field and thermal error of the ball screw feed system under different working conditions. Firstly, based on the heat transfer theory, the heat conduction differential equation of the feed system is established and discretized. The thermal error model of the ball screw feed system is established. Then, the relationship between nut heat source position and operating time is established to simulate nut reciprocating motion. Finally, the temperature and thermal error experiments of the ball screw feed system were carried out, and the temperature experiment results were compared with the simulation results of the finite difference method. The results show that the maximum simulation error of the average temperature in the operating interval is 11.4%, and the maximum simulation error of thermal error is 16.4%, which verifies the validity and correctness of the method. The thermal characteristic modeling method of the ball screw feed system proposed in this paper has a substantial application value for accurately obtaining the temperature field of the feed system.https://www.mdpi.com/2075-1702/9/11/249ball screw feed systemmoving heat sourcethermal characteristicfinite difference method |
| spellingShingle | Hongliang Liu Zhaofeng Rao Ruda Pang Yaoman Zhang Research on Thermal Characteristics of Ball Screw Feed System Considering Nut Movement Machines ball screw feed system moving heat source thermal characteristic finite difference method |
| title | Research on Thermal Characteristics of Ball Screw Feed System Considering Nut Movement |
| title_full | Research on Thermal Characteristics of Ball Screw Feed System Considering Nut Movement |
| title_fullStr | Research on Thermal Characteristics of Ball Screw Feed System Considering Nut Movement |
| title_full_unstemmed | Research on Thermal Characteristics of Ball Screw Feed System Considering Nut Movement |
| title_short | Research on Thermal Characteristics of Ball Screw Feed System Considering Nut Movement |
| title_sort | research on thermal characteristics of ball screw feed system considering nut movement |
| topic | ball screw feed system moving heat source thermal characteristic finite difference method |
| url | https://www.mdpi.com/2075-1702/9/11/249 |
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