碳纤维多层立体织机引纬机构振动动力学仿真

摘要

In view of the poor stability of the existing weft insertion mechanism of carbon fiber multilayer loom , a dynamic model of weft insertion mechanism of carbon fiber multilayer loom is built up based on Adams according to Hertz contact theory with considering dynamic meshing of the gear and rack. The dynamic model is simulated with mo-tion law of sinusoidal and modified trapezoid and the dynamic performance of the two different motion law are compared and analyzed. The result shows that the main factors affecting the vibration properties of weft are the meshing impact of rack and pinion grearing in condition of continuous changes of rapier weft insertion rate. The motion law work on this rack and gear mechanism has relatively small effect on the vibration of the rapier.%针对现有碳纤维立体织机引纬机构剑杆高速运动振动剧烈、运动稳定性不佳的弊端，以Adams平台为基础，建立立体织机引纬机构的动力学模型，根据Hertz接触理论来考虑齿轮齿条的动态啮合过程，对立体织机引纬机构采用正弦运动规律和修正梯形运动规律的动力学性能进行仿真对比分析。仿真分析结果表明：相比采用不同运动加速度规律，由于齿轮齿条啮合产生的啮合力冲击对引纬机构的振动影响更大，是剑杆产生振动的主要原因。