剑杆织机传剑轮载荷特性分析

摘要

剑杆织机中的传剑轮是急速往复转动零件，主要损坏形式为非均匀的齿部磨损及断齿。为了提高传剑轮的使用寿命，有必要研究其载荷特性。运用动态静力法，对剑带进行受力分析，获取包覆角内每颗齿对剑带的作用力的变化规律；在此基础上，分析每颗齿在一个主轴周期内的载荷特性变化规律。根据每颗齿受到的最大载荷及其对应的瞬时功率、每颗齿对剑带做功的大小，判断可能发生断裂的齿号，根据每颗齿发生载荷突变的次数和切向载荷的大小，判断磨损比较严重的齿号。结果表明：每颗齿上的载荷急速变化，不同齿受到的载荷差异非常大，其中某些齿比其他齿更易断裂或磨损。%The rapier wheel of rapier loom is a rapidly reciprocating rotating part,whose main damage form is non-uniform gear wear and broken teeth.In order to improve the service life of the rapier wheel,it is necessary to study the loading characteristics.The force analysis of rapier belts was carried out with dynamic static method,and the changing law of the force of each tooth to the rapier belt in wrap angle was gained.On this basis,the loading characteristic variation law of each tooth in one principal axis cycle was analyzed.According to the maximum load of each tooth,the corresponding instantaneous power and the acting of each tooth on the rapier belt,the tooth number of broken teeth could be j udged.The tooth number of teeth with serious wear could be j udged in accordance with the frequency of the load mutation and the size of tangential load.The study shows that the load on each tooth changes rapidly,and the load difference between different teeth is very big,some of which are more easily fractured or worn.