Analysis of thermal characteristics with multi-physicsc oupling for the feed system of a precision CNC machine tool

• Autorzy: Zheng Junjian , Deng Xiaolei , Yang Junshou , Zhang Wanjun , Lin Xiaoliang , Jiang Shaofei , Yao Xinhua , Shen Hongchen

Identyfikatory

DOI

10.24425/bpasts.2024.148941

• Języki publikacji: EN

Abstrakty

EN

The machining accuracy of CNC machine tools is significantly affected by the thermal deformation of the feed system. The ball screw feed system is extensively used as a transmission component in precise CNC machine tools, responsible for converting rotational motion into linear motion or converting torque into repetitive axial force. This study presents a multi-physical coupling analysis model for the ball screw feed system, considering internal thermal generation, intending to reduce the influence of screw-induced thermal deformation on machining accuracy. This model utilizes the Fourier thermal conduction law and the principle of energy conservation. By performing calculations, the thermal source and thermal transfer coefficient of the ball screw feed system are determined. Moreover, the thermal characteristics of the ball screw feed system are effectively analyzed through the utilization of finite element analysis. To validate the proposed analysis model for the ball screw feed system, a dedicated test platform is designed and constructed specifically to investigate the thermal characteristics of the ball screw feed system in CNC machine tools. By selecting specific CNC machine tools as the subjects of investigation, a comprehensive study is conducted on the thermal characteristics of the ball screw feed system. The analysis entails evaluating parameters like temperature field distribution, thermal deformation, thermal stress, and thermal equilibrium state of the ball screw feed system. By comparing the simulation results from the analysis model with the experimental test results, the study yields the following findings: The maximum absolute error between the simulated and experimental temperatures at each measuring point of the feed system components is 2.4◦C, with a maximum relative error of 8.7%. The maximum absolute error between the simulated and experimental temperatures at the measuring point on the lead screw is 2.0◦C, with a maximum relative error of 6.8%. The thermal characteristics obtained from the steady-state thermal analysis model of the feed system exhibit a prominent level of agreement with the experimental results. The research outcomes presented in this paper provide valuable insights for the development of ball screw feed systems and offer guidance for the thermal design of machine tools.

Słowa kluczowe

EN

CNC machine tool; ball screw; feed system; module; thermal state characteristics; multiple physical field coupling; contactless

PL

obrabiarka CNC; śruba kulowa; układ zasilania; moduł; charakterystyka stanu cieplnego; sprzężenie wielu pól fizycznych; bezdotykowość

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2024
• Tom: Vol. 72, nr 2
• Strony: art. no. e148941
• Opis fizyczny: Bibliogr 29 poz., rys., tab.

Twórcy

autor

Zheng Junjian

• College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China

• https://orcid.org/0009-0001-6288-8039

autor

Deng Xiaolei

• Key Laboratory of Air-driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, China

autor

Yang Junshou

• Key Laboratory of Air-driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, China

autor

Zhang Wanjun

• Key Laboratory of Air-driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, China

autor

Lin Xiaoliang

• Key Laboratory of Air-driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, China

autor

Jiang Shaofei

• College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China

autor

Yao Xinhua

• School of Mechanical Engineering, Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, State Key Laboratory of FluidPower and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China

autor

Shen Hongchen

• School of Mechanical Engineering, Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, State Key Laboratory of FluidPower and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).