基于轮廓曲线修正的织机打纬凸轮设计及验证  

Design and verification of loom beating-up cam based on profile curve correction

作　　者：邱海飞[1] 王超辉 张嘉友 武振阳 QIU Haifei;WANG Chaohui;ZHANG Jiayou;WU Zhenyang(Xijing University,Xi'an,710123,China)

机构地区：[1]西京学院,陕西西安710123

出　　处：《棉纺织技术》2024年第7期74-79,共6页Cotton Textile Technology

基　　金：陕西省教育厅专项科研计划资助项目(15JK2177);西京学院高层次人才专项基金资助项目(XJ20B09);西京学院横向课题资助项目(2019610002001915)。

摘　　要：为减轻织机在打纬前、后心产生的瞬时冲击,将一种修正梯形筘座摆动规律应用于共轭凸轮打纬工艺改进。在工艺分析和机构学设计基础上,利用Matlab构建基于正弦-直线-余弦组合的分段式从动件运动曲线,以此实现打纬共轭凸轮理论廓线反求开发。运算结果显示:主、副凸轮最大压力角分别约为20.6°和27.3°,符合凸轮与滚子接触传动许用条件。将理论廓线以三维坐标形式进行数据转化处理,在ADAMS/View环境下建立打纬共轭凸轮仿真模型,通过机构学仿真验证了筘座角位移、角速度及角加速度的工艺可行性。借助光固化3D打印工艺制作比例模型,试验结果表明:共轭凸轮动力传递平稳,纱线在打纬点附近与筘座发生明显接触和前移变形,打纬效果良好。In order to reduce the instantaneous impact generated by the loom beating-up mechanism at front point and rear point,a swing law of the sley with modified trapezoidal was applied to improve the conjugate cam beating-up process.Based on the process analysis and mechanism design,the follower motion curve with segmenting form based on the combination of sine line cosine,the reverse development of the theoretical profile for the beatingup conjugate was achieved.The calculation result showed that the maximum pressure angle of the main and auxiliary cams were 20.6°and 27.3°respectively,which meet the permissible conditions of cam and roller contact transmission.The theoretical profile was transformed into 3D coordinates for data processing,and the simulation model of conjugate cam was set up in ADAMS/View environment.The technical feasibility of the sley angular displacement,angular velocity and angular acceleration were verified by mechanical simulation.The scale model was made by light curing 3D printing technology.The test results showed that the power transfer of conjugate cam is stable,the yarn has obvious contact and forward deformation with the sley near the beat point,and the effect of weft beating-up is better.

关 键 词：共轭凸轮 打纬原理 运动曲线 仿真模型 理论廓线 3D打印 

分 类 号：TS103.1[轻工技术与工程—纺织工程]