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Transfer function solving, simulating and testing of thermal dynamics characteristics of a ballscrew

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Abstract

Based on the theory of heat transfer, the transfer function between the thermal deformation of any point on the lead screw and the temperature of heat sources of a ballscrew under the influence of multi-changeable heat sources is solved by using the Laplace transform method. By solving the amplitude-frequency characteristics and phase-frequency characteristics of the transfer function, the steady-state response of thermal deformation of the ballscrew is obtained, and the thermal dynamics characteristics of the lead screw under the influence of multi-heat sources are further studied. Comparing with the result of finite-element simulation, the theoretical analyzing result accords with the steady-state part of the finite-element simulating result. Through tests of the steady-state response of thermal deformation, the thermal dynamics characteristics are further studied. The curves of tests by and large accord with the theoretical analyzing result, which shows that the method of transfer function is correct and valid in solving the steady-state response of thermal deformation.

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Authors and Affiliations

  1. The State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China

    Junyong Xia, Bo Wu, Youmin Hu & Tielin Shi

  2. Rolling Mill Business Division, WISDRI Engineering & Research Incorporation Limited, Wuhan, 430223, China

    Junyong Xia

Authors
  1. Junyong Xia
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  2. Bo Wu
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  3. Youmin Hu
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  4. Tielin Shi
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Corresponding author

Correspondence to Bo Wu.

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Xia, J., Wu, B., Hu, Y. et al. Transfer function solving, simulating and testing of thermal dynamics characteristics of a ballscrew. Front. Mech. Eng. China 5, 233–241 (2010). https://doi.org/10.1007/s11465-010-0014-0

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  • DOI: https://doi.org/10.1007/s11465-010-0014-0

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