平面复合连杆机构设计及可动性分析  

The Design and Movability Analysis of Planar Combined Bar Mechanism

作　　者：张春 胡小春 林佳裔 ZHANG Chun;HU Xiao-chun;LIN Jia-yi(School of Mechanical Engineering,Hefei University of Technology,Anhui Hefei230009,China)

机构地区：[1]合肥工业大学机械工程学院

出　　处：《机械设计与制造》2020年第1期48-51,共4页Machinery Design & Manufacture

摘　　要：由于设计尺寸不合理,复合机构在工作过程中产生奇异导致机构失效,因此在复合机构的设计过程中可动性分析是必要的环节;大量的研究成果是针对平面铰链机构的分析设计,而平面复合机构的研究工作相对较少。通过解析法推导出曲柄滑块机构曲柄和连杆的解析式以及通过矢量环方程法推导出五杆滑块机构杆长解析式,并将曲柄滑块机构和五杆滑块机构装配,对装配后的复合机构进行可动性分析,得到复合机构的杆长关系。为快速、准确的设计此类复合机构提供了一种新的方法。Due to the irrationality of design size,there is the singularity of Combined Mechanism to result in failure of the mechanism in work. Therefore,it is necessary part to analysis movability for the design of Combined Mechanism. A large number of research are aimed at the analysis and design of planar hinge mechanisms,while the research of planar combined mechanisms is relatively few. The analytic formula of crank and connecting rod of slider-crank mechanism are deduced by analytic method;and the analytic formula of link length of five bar slider mechanism is derived by vector-circle equation method. The slider crank mechanism and the five bar slider mechanism are assembled to analyze the movability of the assembled Combined Mechanism in order to obtain the relation of link length about Combined Mechanism. It provides a new method to rapidly and accurately design the kind of Combined Mechanism.

关 键 词：复合机构 平面四五杆滑块复合机构 解析法 矢量环方程法 可动性 

分 类 号：TH16[机械工程—机械制造及自动化] TH111