中文摘要：

针对共扼凸轮引纬机构的引纬要求,分析剑杆的运动规律,采用解析法设计共扼凸轮廓线,进而设计出共扼凸轮引纬机构的虚拟样机.基于ANSYS,采用自由划分网格技术使连杆柔性化,联合ADAMS建立共扼凸轮引纬机构刚柔耦合模型.对共扼凸轮引纬机构刚体模型和刚柔耦合模型进行运动学仿真分析,并对共扼凸轮进行模态分析.结果表明,刚柔耦合模型运动学仿真所得的剑杆位移和剑杆速度曲线与刚性模型的运动学仿真结果几乎-致,但剑杆加速度曲线有所波动,说明共扼凸轮引纬机构中连杆的弹性变形影响剑杆引纬的稳定性,当主轴转速提高时,影响越来越大;共扼凸轮的工作频率与固有频率相差甚远,在实际工作过程中,所设计的共扼凸轮不会发生共振变形.

英文摘要：

According to the weft insertion requirement of the conjugate cam weft insertion mechanism, the movement rule of the sword rod was analyzed. The profile of conjugate cam was designed based on the analytic method. The virtual prototype of the conjugate cam weft insertion mechanism was designed. The connecting rod was made to be flexible body by using free meshing technique based on ANSYS. Then it was imported to ADAMS to establish the rigid flexible coupling model of conjugate cam weft insertion mechanism. The kinematic simulation of rigid model and rigid flexible coupling model of the conjugate cam weft insertion mechanism and the modal analysis of conjugate cam were carried out. The results show that compared with the rigid kinematic simulation data, the simulation result of sword rod＇s displacement and the velocity curve in the rigid flexible coupling model are almost the same, however the sword rod＇s acceleration curve has fluctuations. It illustrates that the elastic deformation of the connecting rod of the weft insertion mechanism affects the output motion of the sword rod. As the spindle speed increasing, the effect of the flexibility of the connecting rod on the weft insertion motion of the sword rod increases. The working frequency of the conjugate cam is very different from that of the natural frequency, so the conjugate cam does not occur resonance deformation in the actual work process.