一种新型二自由度缩放机构的分析与仿真  

Analysis and Simulation of a Novel Pantograph with 2 Degree of Freedoms

作　　者：陆登峰[1] 于靖军[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《常州大学学报（自然科学版）》2013年第4期20-24,共5页Journal of Changzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51175011)

摘　　要：先是列举了几种典型的缩放机构,然后对缩放机构的工作原理进行分析,得到了缩放机构设计的基本经验。在此基础上,提出了一种基于四杆机构相似的新型二自由度缩放机构,新机构不仅能够实现平面内二自由度的轨迹缩放,而且具有结构简单紧凑,同类机构构型种类较多,易于实现惯性力平衡,易于实现平面缩放机构向空间缩放机构的扩展等优点。此外,通过理论分析得到了此缩放机构的工作空间。最后使用ADAMS软件对机构的缩放功能和工作空间进行了仿真,仿真结果验证了理论分析的正确性。Firstly,some typical pantographs are listed.Then some design experience of the pantograph is obtained by analyzing the principle of pantograph.Based on the experience,a novel pantograph with 2 degree of freedoms which consists of two similar linkages is proposed.It can not only scale the arbitrary track in the plane,but also has a simple and compact mechanical structure and many configurations.It is easier for the pantograph to accomplish balance of shaking force and transform plane pantograph to spatial pantograph.In addition,the workspace of the pantograph is acquired from theoretical analysis.Finally,the simulation about performance and workspace of the pantograph is carried out using ADAMS in order to verify the correctness of theoretical analysis.

关 键 词：缩放机构 连杆机构 惯性力平衡 构型综合 

分 类 号：TH112[机械工程—机械设计及理论]