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  • ISSN：0577-6686
机械工程学报

机械工程学报 ›› 2017, Vol. 53 ›› Issue (3): 81-89.doi: 10.3901/JME.2017.03.081

• 机械动力学 • 上一篇    下一篇

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高速共轭凸轮打纬机构柔性动力学分析*

魏展1，2, 金国光1，2, 袁汝旺1，2, 李博1，2   

  1. 1. 天津工业大学机械工程学院 天津 300387；
    2. 天津工业大学天津市现代机电装备技术重点实验室 天津 300387
  • 出版日期:2017-02-05 发布日期:2017-02-05
  • 作者简介:

    作者简介：魏展，男，1986年出生，博士研究生，讲师。主要研究方向为柔性机构动力学。

    E-mail：weizhan008@sina.com

    金国光(通信作者)，男，1963年出生，博士，教授，博士研究生导师。主要研究方向为机构学、柔性机构动力学。

    E-mail：jinguoguang@tjpu.edu.cn

  • 基金资助:
    * 国家自然科学基金资助项目(51475330， 51275352); 20160322收到初稿，20161118收到修改稿;

Flexible Dynamic Analysis of High-speed Conjugate Cam Beating-up Mechanism

WEI Zhan1，2, JIN Guoguang1，2, YUAN Ruwang1，2, LI Bo1，2   

  1. 1. School of Mechanical Engineering， Tianjin Polytechnic University， Tianjin 300387;
    2. Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology， Tianjin 300387
  • Online:2017-02-05 Published:2017-02-05

PDF

622

摘要：

共轭凸轮打纬机构广泛应用于高速剑杆织机中，对其进行全面深入的动力学特性研究，将提升织机整体性能，提高生产效率。基于有限元法对打纬机构柔性构件进行有效离散化，为建立精确的动力学模型提供物理模型基础;应用Kane方程结合模态综合技术建立共轭凸轮打纬机构动力学模型，不仅形式简单，求解时也可大大节约计算资源。基于该动力学模型，分别对凸轮转速、打纬阻力、结构参数对动态响应的影响进行仿真。结果表明，转速提高和打纬阻力带来的机构变形不足以影响打纬性能，但转速变化对机构加速度影响明显。研究结果为改善各实际工况和结构参数下打纬机构的动态性能提供了依据，也为更精确地动态优化设计高速打纬机构奠定了理论基础。

关键词: 打纬机构, 动力学, 动态响应, 共轭凸轮

Abstract:

Conjugate cam beating-up mechanism is widely used in high-speed rapier loom. The research of its dynamic characteristic is beneficial to improve the mechanical properties of looms and enhance the production efficiency. The flexible component of the beating-up mechanism is discretized based on the finite element method. It serves as the physical model foundation for obtaining accurate dynamics model. Furthermore, the dynamic model of the beating-up mechanism is calculated by Kane’s equations and modal synthesis technique. The obtained dynamic equation is not only in a simple form, but also efficiently computable. Based on this dynamic model, the simulation of the influence of cam rotation speed, beating up resistance and structure parameters to dynamic response are proposed. The results show that the mechanism deformation from the rotation speed increases and the beating up resistance is not big enough to affect its performance, while the variation of the rotation speed affects the mechanism acceleration obviously. Research results will provide a basis for improving dynamic performance in different working conditions and with various structure parameters, furthermore, research results can laid a theoretical basis for more precise dynamic optimization design of high-speed beating-up mechanism.

Key words: beating-up mechanism, dynamic response, dynamics, conjugate cam

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