• CN: 11-2187/TH
  • ISSN: 0577-6686

›› 2013, Vol. 49 ›› Issue (13): 174-182.

• Article • Previous Articles     Next Articles

Non-synchronous Error and Modeling of Dual-drive System in Gantry-type Machine Tools with Travelling Bridge

CHENG Yao;LIANG Tao;ZHAO Wanhua   

  1. State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University
  • Published:2013-07-05

Abstract: According to the configuration movement feature of dual-drive system, the behavior of the dual-driving system is divided into two parts. The dynamic model of each one part is developed. Based on the dual-driving system model, the analytic formula of the non-synchronous error is derived. The quantitative relation between the structural parameters, the acceleration, velocity, and position input of the dual-driving system and the non-synchronous error is obtained. The influence law of stiffness ratio, friction damping ratio, the shift of mechanical coupling parts orthocenter on the non-synchronous error is developed. The experiments are taken on the DK-1200 machine tool with several different input signals, and the experiment results agree with the theoretical calculations. The accuracy of the calculation formula of the non-synchronous error is proved.

Key words: Dual-drive system, Dynamic model, Non-synchronous error

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