基于有限元法的细纱机牵伸机构的结构优化

Structural Optimization of Drafting Mechanism of Spinning Frame on the Finite Element Method

摘要: 产量的不断提升，造成细纱机牵伸机构中的齿轮发生过度磨损而破坏。针对牵伸机构进行了有限元分析，研究了齿轮Mises应力和中间轴转角分布规律，分析结果表明：主要是由于中间轴的弯曲刚度较低，导致齿轮3产生较大的Mises应力。通过对牵伸机构结构优化，增大了中间轴弯曲刚度，减小了中间轴转角，大大降低了齿轮3的Mises应力，该研究对牵伸机构设计与应用具有指导意义。

Abstract: Due to the continuous increase of output, the gear in the drafting mechanism of the spinning frame is damaged by excessive wear. The distribution of gear Mises stress and intermediate shaft angle was studied by finite element analysis regarding draft mechanism. The results of analysis indicated that mainly due to the lower bending stiffness of the intermediate shaft, gear 3 generates a larger Mises stress. By optimizing the structure of the draft mechanism, the bending stiffness of the intermediate shaft was increased; the rotation angle of the intermediate shaft was reduced; and the Mises stress of gear 3 was greatly reduced. This study is of guiding significance to the design and application of draft mechanism.