考虑齿轮动态啮合力的碳纤维立体织机引纬机构设计研究

Research of Weft Insertion Mechanism Design of Carbon Fiber Multilayer Loom with Considering the Gear Dynamic Meshing Force

针对现有碳纤维立体织机引纬机构剑杆运动加速度波动剧烈,导致剑杆运动振动,运动平稳性差,提出采用减小齿轮模数同时增加异相位啮合齿轮的方法来提高引纬机构的运动稳定性,并在ADAMS软件中对不同模数、齿轮数和不同相位的几种引纬机构方案进行动力学仿真对比分析。实验结果表明,两个齿轮同相位传动改为异相位传动,传动动力性能可以得到一定的提高,但对于模数较大的齿轮齿条传动改善效果不明显;采用减小齿轮模数同时增加异相位啮合齿轮的方法,则可以显著提高齿轮齿条啮合传动动力性能,加速度在各频率的波动幅值平均降低25%。

In view of the poor stability and remarkably rapier vibration of the existing weft insertion mechanism of carbon fiber multilayer loom which result from rapier motion acceleration volatility. Through increasing one more meshing gear and setting appropriate phase differences between the gears combining with reducing the module of the meshing gears,the dynamic characteristics of the mechanism are improved effectively. Using the MSC- ADAMS software,the different module,different number of gears and different phrase between gears meshing with rack are simulated and analyzed. The simulation shows that by changing the form of two same phrase gear transmission into the form of two different phrase gear transmission,the dynamic performance can be improved somehow,but it＇s not effectively in case of relatively large module. The presented method is effectively improving the dynamic stability of the mechanism. The amplitude of the acceleration at each frequency is reduced by an average of 25%.