棉纺精梳机分离罗拉连杆驱动机构动力学仿真及有限元分析  

Dynamic simulation and finite element analysis of detaching roller linkage drive mechanism for cotton comber machines

作　　者：冯清国[1] 巫鳌飞 任家智[1,3] 陈宇恒 FENG Qingguo;WU Aofei;REN Jiazhi;CHEN Yuheng(Zhongyuan Institute of Technology,Zhengzhou,Henan450007,China;Shengmei Semiconductor Equipment(Shanghai)Co.,Ltd.,Shanghai201203,China;Collaborative Innovation Center for Advanced Textile Equipment Technology,Zhengzhou,Henan450007,China)

机构地区：[1]中原工学院,河南郑州450007 [2]盛美半导体设备(上海)股份有限公司,上海201203 [3]先进纺织装备技术省部共建协同创新中心,河南郑州450007

出　　处：《纺织学报》2023年第9期197-204,共8页Journal of Textile Research

摘　　要：为提高棉纺精梳机的使用寿命及生产运行可靠性,避免精梳机在长期高速运转条件下各零件的疲劳、磨损、断裂等造成的生产事故问题。利用Solid works软件建立分离罗拉驱动机构三维模型并导入Adams软件分别进行运动学与动力学仿真,得出了不同速度条件下分离罗拉驱动机构各零件铰接点在一个运动周期内的受力分布曲线;利用Ansys Workbench软件对各零件赋予材料属性并进行有限元仿真,得到各零件在一个运动周期内不同速度下的最大应力。结果表明:当精梳机速度为500钳次/min及以下时,一个运动周期内的分离罗拉驱动机构各零件的最大应力均小于材料的许用应力(400 MPa),材料强度满足生产条件;当精梳机速度依次提高到600和700钳次/min后,定时调节盘的最大应力(415.98 MPa)较500钳次/min时分别增大40.55%和79.1%,超过材料的许用应力(400 MPa),该零件有疲劳、磨损、断裂的风险,易故障停车并造成生产事故。在JSFA588型精梳机上按照零件设计要求进行了制造、装配及生产试验,进一步验证了仿真结果的有效性。Objective This research aims to improve the long-lasting service and the reliability of the comber machine in cotton spinning.The mechanism of each part of the detaching roller at different velocities was analyzed to solve the problems caused by the fracture of the linkage parts of the detaching roller when working at a high velocity.Method The first part of the research was focused on the dynamic simulations of the linkage gear of detaching roller based on the JSFA588 comber machine using a finite element(FE)analysis method.The three-dimensional(3-D)model of the linkage gear was established using SolidWorks software and then imported into Adams software.The curves of the force distribution of the linkage points at different velocities in a motion cycle were studied.The second part of this research concentrated on the FE analysis of the stress of each part of the linkage gear using Ansys Workbench software.The material properties of 45-carbon steel were assigned to the FE models and the maximum stress of each part at different velocities in a motion cycle was analyzed.Results The change tendency of force in each part is the same in a motion cycle,but due to the existence of inertial force,the magnitude of force at the same index is different(Tab.1).The peak force on each part increases with the speed of the comber machine(Tab.2).The maximum stress of the eccentric sleeve was 66.565 MPa at 500 nippers/min(Fig.4(a));the maximum stress of the eccentric seat was 2.5992 MPa(Fig.4(b));the maximum stress of the timing adjustment disc was 295.96 MPa(Fig.4(c));the maximum stress of the swing arm was 102.68 MPa,which is located at its lower end face(Fig.4(d));the maximum stress of linkage 2 was 38.667 MPa(Fig.4(e));the maximum stress of linkage 1 was 24.187 MPa(Fig.4(f));the maximum stress of the lower rocker,located at the round hole articulated with the linkage 1 was 4.7187 MPa(Fig.4(g));and the maximum stress of the rocker was 101.62 MPa(Fig.4(h)).All of the maximum stresses of the eccentric sleeve,eccentric seat,timing

关 键 词：棉纺 精梳机 分离罗拉连杆驱动机构 铰接点受力 零件强度 动力学仿真 有限元分析 

分 类 号：TS112.2[轻工技术与工程—纺织材料与纺织品设计]