一种外置式高速织机共轭凸轮开口设计  

Design of high-speed loom’s external conjugate cam shedding mechanism

作　　者：邱海飞[1] 李春风[2] 陈铭 杨斌 QIU Hai-fei;LI Chun-feng;CHEN Ming;YANG Bin(College of Mechanical Engineering,Xijing University,Xi’an 710123;Industrial Technology Center,Chengde Petroleum College,Chengde 067000)

机构地区：[1]西京学院机械工程学院,陕西西安710123 [2]承德石油高等专科学校工业中心,河北承德067000

出　　处：《机械设计》2022年第11期1-6,共6页Journal of Machine Design

基　　金：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);陕西省大学生创新训练项目(S202012715029)。

摘　　要：为减小凸轮与转子之间的磨损与接触应力,在机构学等价转化的基础之上,构建了一种基于双轴构造的新型外置式共轭凸轮开口系统。将余弦加速运动规律应用于摆杆从动件和综框驱动,在MATLAB环境下实现了凸轮理论廓线及其关键性能参数(α,R,ρ)的编程设计与动态计算,确定了合理的凸轮实际轮廓与转子半径。利用ADAMS/View建立了针对单页综框的功能样机仿真模型。动态仿真结果表明:摆杆的角运动与凸轮理论廓线设计预期一致,综框的位移、速度及加速度符合余弦加速运动规律。通过比例模型试制对开口系统动力性能进行实验测试,结果显示:凸轮提综和回综运动平稳可靠,纱线拉伸形变明显、梭口特征清晰,符合开口织造工艺要求,为高速凸轮开口系统的创新设计与性能改进提供了借鉴。In this article, in order to reduce wear and contact stress between the cam and the rotor, a new external conjugate cam shedding system driven by the double shaft is constructed on the basis of mechanism equivalent transformation. The law of cosine acceleration is applied to drive the swing rod follower and the heald frame. The programming design and dynamic calculation of the theoretical profile and its key parameters(α, R and ρ) on the cam are realized in the MATLAB environment. On the basis of that, the reasonable cam profile and the rotor radius are determined. Besides, the simulation model of the functional prototype for single heald frame is worked out with the help of ADAMS/View. The results of dynamic simulation show that angular motion law of the swing rod is consistent with the expected theoretical profile;displacement, velocity and acceleration of the heald frame conform to the law of cosine acceleration. The dynamic performance of the shedding system is tested through trial production of its proportional model. It’s shown that the cam heald lifting and returning movements are stable and reliable, the yarn tensile deformation is obvious, and the shed characteristics are obvious, thus meeting the requirements of the open weaving process. This study provides important reference for innovative design and performance improvement of high-speed cam shedding systems.

关 键 词：织机 凸轮 开口系统 综框 仿真 实验 

分 类 号：TS103.1[轻工技术与工程—纺织工程] TH122[轻工技术与工程—纺织科学与工程]