纺织学报 ›› 2014, Vol. 35 ›› Issue (9): 144-0.

• 机械与器材 • 上一篇    下一篇

双侧四连杆打纬机构动态载荷计算与仿真

  

  1. 陕西省西安市长安区西京路1号 西京学院
  • 收稿日期:2013-08-05 修回日期:2014-05-26 出版日期:2014-09-15 发布日期:2014-09-16
  • 通讯作者: 邱海飞 E-mail:qhf8386@163.com
  • 基金资助:

    机制专业创新能力培养的教学内容更新与课程体系改革研究

The calculation of dynamic load and simulation for two-side four-bar beating-up mechanism

  • Received:2013-08-05 Revised:2014-05-26 Online:2014-09-15 Published:2014-09-16

摘要: 为了准确分析四连杆打纬机构的力学特性,将钢筘上的打纬阻力转化为摇轴上的等效扭矩,通过STEP平滑步骤函数来模拟等效扭矩的变化规律,为打纬阻力的仿真计算提出了一种有效方法。通过动力学仿真分析,计算出了作用在织机机架上的动态载荷;利用Motion模块的运动载荷输入功能设定边界条件,将动态载荷直接传递至运动构件,有效降低了边界误差对有限元模型的计算影响,在此基础上获得了曲轴、牵手和摇杆的静力学分析结果,为准确认识四连杆打纬机构的力学特性提供了可靠依据。

Abstract: For analysising mechanical property of four-bar beating-up mechanism more accuracy, resistance of beating-up on reed was changed into an equivalent torque on rocking shaft, and the varying law of the equivalent torque was simulated by smooth step function, because of those, an effective method used to calculate resistance of beating-up was put forward. Based on dynamics simulation and analysis for the mechanism, dynamic load on loom’s frame was calculated. Boundary conditions was defined through the function of sports load input on Motion module, the dynamic load was transferred to moving link directly, thus the influence for calculating of finite element model which caused by boundary error was reduced effectively. Based on above, the results of statics analysis for crankshaft, connecting rod and rocker were acquired, and a reliable basis was offered to know the mechanics characteristic of the four-bar beating-up mechanism.

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