机构自由度计算难点和其运动分析及变自由度机构的探讨  

Discussion on Diffcult Problems in Freedom Calculation of Mechanism and its Motion Analysis and Mechanism of Freedom Modification

作　　者：董伟良[1] 

机构地区：[1]上海应用技术学院机械与自动化工程学院,上海200235

出　　处：《上海应用技术学院学报（自然科学版）》2007年第2期94-98,共5页Journal of Shanghai Institute of Technology: Natural Science

摘　　要：机构的自由度是机构具有独立运动的参数,常规机构的自由度是恒定的,但有些特殊机构,其自由度在工作过程中是变化的,也称为变自由度机构。结合实例分析研究自由度计算中的常见难点及机构的自由度与机构原动件数不等时的机构运动的确定,对变自由度机构的自由度计算作一些探讨,对创新设计更优异新型的机构提供了一条有效的途径。Freedom of mechanism is that mechanism has independent motion reference, and conventional freedom of mechanism is constant, but some particular freedom of mechanism is changable in its working process, and it is called mechanism of freedom madification. This paper presents examples to analyse diffcult problems in freedom calculation on and how to determine mechanism motion when freedom mechanism is unequal to numbers driving link of mechanism, at last to discuss mechanism of freedom modification and give a nice way for creating new and good mechanism.

关 键 词：变自由度机构 公共约束 不确定运动 自由度计算 

分 类 号：TH112[机械工程—机械设计及理论]