Modern Manufacturing Engineering ›› 2018, Vol. 458 ›› Issue (11): 101-106.doi: 10.16731/j.cnki.1671-3133.2018.11.018

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Motion characteristic analysis of long-span linear motion mechanism driven by synchronous belt

Fang Yahui1,2, Gao Yunguo1   

  1. 1 Changchun Institute of Optics Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130000,China;
    2 University of Chinese Academy of Sciences,Beijing 100039,China
  • Received:2017-07-17 Online:2018-11-20 Published:2019-01-07

Abstract: Using long-span linear motion mechanism driven by synchronous belt as the linear motion mechanism for a novel three-degree-of-freedom optical testing target to meet the accuracy requirements in the large stroke and high speed conditions.The linear synchronous belt drive virtual prototype model is created using UG and RecurDyn software,and the multi-body dynamics simulation was carried out.The main factors leading to the linear motion error of the load during the linear motion and the influence of initial tension,load acceleration and mass on the linear motion error were analyzed.The results show that the motion error of the load decreases with the increase of the initial tension force,and increases with the increase of the acceleration and the mass of the load.It provides a reference for the application of the linear drive mechanism of the synchronous belt in the long distance linear motion precision machinery.

Key words: optical testing target, synchronous belt drive, dynamics simulation, motion precision

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