Journal of South China University of Technology (Natural Science Edition) ›› 2021, Vol. 49 ›› Issue (9): 126-134.doi: 10.12141/j.issn.1000-565X.210338

Special Issue: 2021年流体动力与机电控制工程

• Fluid Power & Electromechanical Control Engineering Special • Previous Articles     Next Articles

Dynamic Analysis of Two-Stage Planetary Roller Screw Mechanism Based on Parameter Matching

WU Linping1 MA Shangjun1,2 ZHANG Jianxin1,2 XIE Lizhong2   

  1. 1.School of Mechanical Engineering∥Shaanxi Engineering Laboratory for Transmissions and Controls，Northwestern 
    Polytechnical University，Xi'an 710072，Shaanxi，China；2.Hubei Jiangshan Heavy Industry Co.，Ltd.，
    Xiangyang 441057，Hubei，China
  • Received:2021-05-25 Revised:2021-07-23 Online:2021-09-25 Published:2021-09-01
  • Contact: 吴林萍（1995-），女，博士生，主要从事行星滚柱丝杠动力学研究。 E-mail:wulinping@mail.nwpu.edu.cn
  • About author:吴林萍（1995-），女，博士生，主要从事行星滚柱丝杠动力学研究。
  • Supported by:
    Supported by the National Natural Science Foundation of China (51875458, 51905428), the National Key Research and Development Program (2019YFB2004700) and the Key Research and Development Program of Shaanxi Province (2021ZDLGY10-08)

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Abstract: By taking the two-stage planetary roller screw mechanism （PRSM） as the research object，this paper supplements the strength conditions and the stability requirements of the compressed rod required for its parameter design.And，on the basis of motion principle of the two-stage PRSM，the theoretical calculation methods of the rotation and revolution angular velocity of the rollers，the axial displacement and axial velocity of the nut at each stage are proposed.Then，according to the design parameters，a three-dimension model of the two-stage planetary roller screw mechanism is established，and a multi-body dynamics simulation model is constructed based on ADAMS software.By comparing the theoretical values with the simulation results，it is found that the relative errors are within the acceptable range，which verifies the rationality of the parameter matching of the two-stage PRSM and the accuracy of the theoretical calculation method.

Key words: two-stage planetary roller screw mechanism, stability of compressed rod, dynamic analysis, simulation model

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