Analysis of the Influence of the Restraining Chain on the Posture Error of Movable Platform of Hybrid Machine Tools

Abstract:

This paper takes one kind of 3-TPT Hybrid Machine Tools (HMT) as the object to study. It mainly analyzes the influence of the parallelogram mechanism as the restraining chain of machine on the posture error of movable platform. Firstly, on the basis of introducing the structure of HMT, the kinematics of the restraining chain of this machine is analyzed, and the kinematics equation of the restraining chain is established. Secondly, the influence of two kinds of factors including the shape error of parallelogram mechanism and the micro-rotation of Hooker joint around the axis of connecting rod is analyzed respectively, and the theoretical relationship expression is acquired between various errors influencing factor and the posture error of movable platform, thus the foundation for the theoretical error analysis of the HMT is laid.

• Periodical: Applied Mechanics and Materials (Volumes 16-19)
• Pages: 723-727
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.16-19.723
• Online since: October 2009
• Authors: Jian Ye Guo, Ming Hu, Liang Zhao, Yong Xian Liu
• Keywords: Hybrid Machine Tool, Movable Platform, Parallelogram Mechanism, Posture Error, Restraining Chain

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