Journal of South China University of Technology(Natural Science Edition) ›› 2022, Vol. 50 ›› Issue (10): 124-131.doi: 10.12141/j.issn.1000-565X.220120

Special Issue: 2022年流体动力与机电控制工程

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Kinematic Characteristics and Dynamic Analysis of Recirculating Planetary Roller Screw Mechanism

QIAO Guan1 LIAO Rong1 JIANG Guangjun1 MA Shangjun2 YANG Guangmei3   

  1. 1.Inner Mongolia Key Laboratory of Advanced Manufacturing Technology,Inner Mongolia University of Technology,Hohhot 010051,Inner Mongolia,China
    2.Shaanxi Engineering Laboratory for Transmissions and Controls,Northwestern Polytechnical University,Xi’an 710072,Shaanxi,China
    3.Inner Mongolia Power Machinery Research Institute,Hohhot 010010,Inner Mongolia,China
  • Received:2022-03-14 Online:2022-10-25 Published:2022-10-09
  • Contact: 乔冠(1990-),男,博士,副教授,主要从事行星滚柱丝杠传动设计与研制研究。 E-mail:qiaoguan@imut.edu.cn
  • About author:乔冠(1990-),男,博士,副教授,主要从事行星滚柱丝杠传动设计与研制研究。
  • Supported by:
    the National Natural Science Foundation of China(52265009);the Natural Science Foundation of Inner Mongolia(2020BS05003);Inner Mongolia Science and Technology Project(2020GG0288)

Abstract:

The recirculating planetary roller screw mechanism is a transmission mechanism that is engaged by the screw or nut thread and multiple circular groove rollers. This study theoretically analyzed the working principle and motion relationship of the recirculating planetary roller screw mechanism, and established the 3D model of the recirculating planetary roller screw mechanism. The 3D model was imported into the multi-rigid-body dynamics simulation software ADAMS, and the reasonable connection relationship of virtual prototype was set. The dynamics analysis was carried out and related parameters such as angular speed, velocity, force and torque were extracted. The results show that the simulated value of roller angular speed is 28.28 rad/s, the angular speed of roller is -5.20 rad/s, the nut movement velocity is 1.98 mm/s, and the nut displacement is 2 mm. The above values were compared with their corresponding theoretical values, and the error was found to be less than 5%, thus verified the correctness of the simulation results. The contact force of the roller contacting with the screw and the nut respectively presents sine curve characteristics in the nut threadless area.When the load is 5, 10 and 15 kN, the maximum peak of the collision force between the same roller and convex platform of cam ring under different loads are 113.92, 32.31 and 54.08 N, respectively. Besides, the fluctuation range of the maximum peak of the collision force between diffe-rent rollers and convex platform of cam ring under the same load is similar to the above values, thus the collision force between the roller and convex platform of cam ring peak value is not affected by the load size. The collision torque between the roller and the carrier increases under higher load; the angular speed of the roller begins to change in the nut threadless area during the operation of the recirculating planetary roller screw mechanism, and the maximum sudden change occurs at the contact between the roller and the convex platform of cam ring. This study has certain reference significance for optimizing the overall performance of the recirculating planetary roller screw mechanism.

Key words: recirculating planetary roller screw mechanism, kinematic characteristics, dynamics, collision force

CLC Number: