水平摘锭式采棉机凸轮的有限元模态分析  

The Finite Element Modal Analysis of Cam Mechanism of Level Spindle-Type Cotton Picker

作　　者：魏朋[1] 王春耀[1] 罗建清[1] 鲁飞[1] 

机构地区：[1]新疆大学机械工程学院,新疆乌鲁木齐830047

出　　处：《机械设计与制造》2015年第9期104-106,110,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51465054)

摘　　要：凸轮是水平摘锭式采棉机采摘头的关键部件,凸轮在工作时极易发生振动,研究凸轮的振动特性对整个采棉机的工作性能有着重要的影响。应用UG建立凸轮的实体模型,导入Workbench软件,分别进行自由模态和约束模态的有限元分析。得出凸轮前六阶自由模态和约束模态的固有频率及其相应振型,结合采棉机的实际工作情况以及可能受到的外部激励,并通过振型图的对比分析,确定其刚度薄弱环节,提出相应的改进意见,为凸轮的优化设计提供必要的理论依据。Cam is a key component of picking head of level spindle -type cotton picker. It is important for the work performance of the entire cotton picker to research the vibration characteristics of the cam because cam easily vibrates at work. It established the solid model of cam by using UG, and conducted finite element method for the free modal and constrained modal analysis by importing Workbench software. It had drawn the preceding six natural frequencies and the corresponding mode shapes of the free modal and constrained modal, combining with the actual working conditions of cotton picker it determined the stiffness of the weak link through comparative analysis, and proposed improvements. It provided the necessary theoretical basis for the optimal design of cam.

关 键 词：摘锭式采棉机 凸轮 WORKBENCH 模态分析 

分 类 号：TH16[机械工程—机械制造及自动化] S225.99[农业科学—农业机械化工程]