Abstract:

In order to analyze the kinematic characteristics of non-circular planetary gear trains weft insertion mechanism and then obtain a group of preferable parameters, a kinematic model of this mechanism was established. Besides, the aided analytical and kinematic simulation software was compiled based on Visual Basic 6.0. The influences of several important parameters on the shape of pitch curves of the non-circular gears in this mechanism were analyzed, and a group of preferable structural parameters were obtained. The movement simulation analysis was conducted under this group of parameters. Under the condition of same reed width and rotary speed of loom spindle, this novel mechanism was compared with the weft insertion mechanism applied on the TT96 rapier loom. The conclusion shows that non-circular planetary gear trains weft insertion mechanism has smaller maximum value of velocity and acceleration, and it can meet the requirments of weft insertion.

Key words: weft insertion mechanism, non-circular gear, planetary gear train, reverse solution

摘要：

为了分析非圆齿轮行星轮系引纬机构的运动学特性并获得一组较优的参数，建立了该机构的运动学分析模型，基于Visual Basic 6.0平台编写了该机构的辅助分析与运动仿真软件，分析了几个重要参数对机构中非圆齿轮节曲线的影响，得到了一组较优的机构参数。对该组参数下的引纬机构进行运动仿真分析，在相同筘幅和织机主轴转速条件下，对非圆齿轮行星轮系引纬机构和TT96剑杆织机引纬机构的运动学特性进行了比较，结果表明非圆齿轮行星轮系引纬机构具有较小的最大速度值和最大加速度值，能够满足引纬要求。

关键词: 引纬机构, 非圆齿轮, 行星轮系, 反求